Scholars@Duke
Benjamin J. Wiley

Benjamin J. Wiley

Professor of Chemistry
Chemistry
benjamin.wiley@duke.edu
Box 90346, Durham, NC 27708-0346
1102 French Family Science Cen, Durham, NC 27708

Selected Publications

Toward One-Way Smoke: Synthesis of Copper-Based Microclubs with Asymmetric Scattering and Absorption

Journal Article Advanced Functional Materials · July 17, 2024 The ultimate goal of this work is to create an engineered aerosol that acts as one-way smoke, i.e. it creates an asymmetric vision environment in which the ability to image objects depends on the viewing direction. To this end, a rapid, one-pot synthesis o ... Full text Cite

Design and solution-based testing of a synthetic aerosol particle with asymmetric scattering behavior

Conference Proceedings of SPIE the International Society for Optical Engineering · January 1, 2024 We have modeled, synthesized, and performed preliminary testing of a synthetic aerosol particle with the intent to affect an asymmetric (“one-way”) vision environment when deployed as an airborne plume and aligned in real time via an applied acoustic field ... Full text Cite

Collecting sexual orientation in counseling research: Implications for counselor education

Journal Article Counselor Education and Supervision · December 1, 2023 Sexual orientation is often invisible in counseling research despite increasing LGBQ+ identity in the United States. We used consensual qualitative research to explore considerations from LGBQ+ counseling researchers for collecting sexual orientation. Thre ... Full text Cite

Anisotropic Growth of Silver Nanocubes: The Role of Bromide Adsorption and Hydrophilic Polymers

Journal Article Chemistry of Materials · September 12, 2023 The application of capping agents to modulate the colloidal synthesis of metal nanocrystals offers an effective avenue for shape control, but the roles of such agents are not yet completely understood. This study uses seed-mediated growth, single-crystal e ... Full text Cite

Chloride enables the growth of Ag nanocubes and nanowires by making PVP binding facet-selective.

Journal Article Nanoscale · March 2023 Solution-phase synthesis of metal nanocrystals with multiple additives is a common strategy for control over nanocrystal shape, and thus control over their properties. However, few rules are available to predict the effect of multiple capping agents on met ... Full text Cite

Connecting With Clients in Later Life: The Use of Telebehavioral Health to Address Older Adults’ Mental Health Needs

Journal Article Adultspan Journal · January 1, 2023 Telebehavioral health offers a unique opportunity to expand access to mental health services for older clients by addressing systemic barriers that often render mental health care inaccessible in later life. Although health interventions facilitated by tec ... Full text Cite

Flaw sensitivity and tensile fatigue of a high-strength hydrogel

Journal Article International Journal of Fatigue · October 1, 2022 This work describes mechanical behavior of a high-strength hydrogel composite relative to costal cartilage. The materials are analyzed for monotonic ultimate tensile strength (UTS) with differing flaws that represent extreme differences in local stress con ... Full text Cite

A Synthetic Hydrogel Composite with a Strength and Wear Resistance Greater than Cartilage

Journal Article Advanced Functional Materials · October 1, 2022 Key hurdles for replacing damaged cartilage with an equivalent synthetic construct are the development of a hydrogel with a strength that exceeds that of cartilage and fixation of this hydrogel onto the surface of an articulating joint. This article descri ... Full text Cite

Colorful Conductive Threads for Wearable Electronics: Transparent Cu-Ag Nanonets.

Journal Article Advanced science (Weinheim, Baden-Wurttemberg, Germany) · August 2022 Electronic textiles have been regarded as the basic building blocks for constructing a new generation of wearable electronics. However, the electronization of textiles often changes their original properties such as color, softness, glossiness, or flexibil ... Full text Cite

Eight-Fold Intensification of Electrochemical Azidooxygenation with a Flow-Through Electrode

Journal Article ACS Sustainable Chemistry and Engineering · June 13, 2022 Finding ways to reduce reactor volume while increasing product output for electro-organic reactions would facilitate the broader adoption of such reactions for the production of chemicals in a commercial setting. This work investigates how the use of flow ... Full text Cite

Technical note: Controlling the attenuation of 3D-printed physical phantoms for computed tomography with a single material.

Journal Article Med Phys · April 2022 PURPOSE: The purpose of this work was to characterize and improve the ability of fused filament fabrication to create anthropomorphic physical phantoms for CT research. Specifically, we sought to develop the ability to create multiple levels of X-ray atten ... Full text Link to item Cite

Transparent Air Filters with Active Thermal Sterilization.

Journal Article Nano letters · January 2022 The worldwide proliferation of COVID-19 poses the urgent need for sterilizable and transparent air filters to inhibit virus transmission while retaining ease of communication. Here, we introduce copper nanowires to fabricate transparent and self-sterilizab ... Full text Cite

The Roles of Citrate and Defects in the Anisotropic Growth of Ag Nanostructures

Journal Article Chemistry of Materials · November 9, 2021 Synthetic control of nanocrystal shape is often achieved by controlling the crystal structure of the seed crystals as well as through the use of additives that are thought to block atomic addition to certain facets. However, the effect of the crystal struc ... Full text Cite

High-Aspect-Ratio Ag Nanowire Mat Electrodes for Electrochemical CO Production from CO2

Journal Article ACS Catalysis · October 1, 2021 Economic CO2conversion to CO or syngas production requires product-selective, high-throughput, and durable electrolyzers. High-surface-area nanocatalysts combined with gas-diffusion layers (GDLs) enable high CO2flux and conversion but ... Full text Cite

Boron Nitride Nanotubes for Heat Dissipation in Polycaprolactone Composites

Journal Article ACS Applied Nano Materials · May 28, 2021 This article describes the synthesis of nanocomposites for the fabrication of printable filaments of interest for additive manufacturing. Boron nitride nanotubes (BNNTs) stand out from several nanofillers for the improvement of heat dissipation from polyca ... Full text Cite

Understanding the Solution-Phase Growth of Cu and Ag Nanowires and Nanocubes from First Principles.

Journal Article Langmuir : the ACS journal of surfaces and colloids · April 2021 In this feature article, we provide an account of the Langmuir Lecture delivered by Kristen Fichthorn at the Fall 2020 Virtual Meeting of the American Chemical Society. We discuss how multiscale theory and simulations based on first-principles DFT were use ... Full text Cite

Unwrap Them First: Operando Potential- induced Activation Is Required when Using PVP-Capped Ag Nanocubes as Catalysts of CO₂ Electroreduction.

Journal Article Chimia · March 2021 Metallic nanoparticles of different shape can be used as efficient electrocatalysts for many technologically and environmentally relevant processes, like the electroreduction of CO₂. Intense research is thus targeted at finding the morphology of nanosized ... Full text Cite

Isotropic Iodide Adsorption Causes Anisotropic Growth of Copper Microplates

Journal Article Chemistry of Materials · February 9, 2021 Control over the shape of a metal nanostructure grants control over its properties, but the processes that cause solution-phase anisotropic growth of metal nanostructures are not fully understood. This article shows why the addition of a small amount (75-1 ... Full text Cite

High-Strength Hydrogel Attachment through Nanofibrous Reinforcement.

Journal Article Advanced healthcare materials · February 2021 Featured Publication The repair of a cartilage lesion with a hydrogel requires a method for long-term fixation of the hydrogel in the defect site. Attachment of a hydrogel to a base that allows for integration with bone can enable long-term fixation of the hydrogel, but curren ... Full text Cite

Limitations of identical location SEM as a method of degradation studies on surfactant capped nanoparticle electrocatalysts

Journal Article Journal of Catalysis · February 1, 2021 Identical location scanning electron microscopy (IL–SEM) has become an important tool for electrocatalysis research in the past few years. The method allows for the observation of the same site of an electrode, often down to the same nanoparticle, before a ... Full text Cite

Flash ablation metallization of conductive thermoplastics

Journal Article Additive Manufacturing · December 1, 2020 Featured Publication Fused filament fabrication (FFF) is the most widely available 3D printing technology. Recently, a variety of conductive thermoplastic filaments have become commercially available, allowing printing of electronic structures using the technology. However, th ... Full text Cite

Environment Matters: CO2RR Electrocatalyst Performance Testing in a Gas-Fed Zero-Gap Electrolyzer

Journal Article ACS Catalysis · November 6, 2020 Among the electrolyzers under development for CO2 electroreduction at practical reaction rates, gas-fed approaches that use gas diffusion electrodes (GDEs) as cathodes are the most promising. However, the insufficient long-term stability of these technolog ... Full text Cite

A Synthetic Hydrogel Composite with the Mechanical Behavior and Durability of Cartilage

Journal Article Advanced Functional Materials · September 1, 2020 This article reports the first hydrogel with the strength and modulus of cartilage in both tension and compression, and the first to exhibit cartilage-equivalent tensile fatigue strength at 100 000 cycles. These properties are achieved by infiltrating a ba ... Full text Cite

Bromide Causes Facet-Selective Atomic Addition in Gold Nanorod Syntheses

Journal Article Chemistry of Materials · August 11, 2020 Featured Publication The aspect ratio-dependent properties of gold nanorods are used in a variety of applications, but the cause of anisotropic nanorod growth remains unclear. Measurements utilizing single-crystal electrodes were collected to determine what additive(s) in pent ... Full text Cite

Alkaline Water Electrolysis at 25 A cm−2 with a Microfibrous Flow-through Electrode

Journal Article Advanced Energy Materials · July 1, 2020 The generation of renewable electricity is variable, leading to periodic oversupply. Excess power can be converted to H2 via water electrolysis, but the conversion cost is currently too high. One way to decrease the cost of electrolysis is to in ... Full text Cite

The resistance of Cu nanowire-nanowire junctions and electro-optical modeling of Cu nanowire networks

Journal Article Applied Physics Letters · June 22, 2020 Flexible transparent conductors made from networks of metallic nanowires are a potential replacement for conventional, non-flexible, and transparent conducting materials such as indium tin oxide. Cu nanowires are particularly interesting as cost-effective ... Full text Cite

CT phantom with 3D anthropomorphic, contrast-enhanced texture

Conference Progress in Biomedical Optics and Imaging Proceedings of SPIE · January 1, 2020 Physical phantoms with realistic anatomical texture and composition (including contrast media) are of high value and relevance in evaluating the performance of clinical computed tomography (CT) imaging systems. They can offer assessments of image quality i ... Full text Cite

Electrochemical investigations of metal nanostructure growth with single crystals.

Journal Article Nanoscale · November 2019 Control over the nanoscopic structure of a material allows one to tune its properties for a wide variety of applications. Colloidal synthesis has become a convenient way to produce anisotropic metal nanostructures with a desired set of properties, but in m ... Full text Cite

3d conductive polymer printed metasurface antenna for fresnel focusing

Journal Article Designs · September 1, 2019 We demonstrate a 3D printed holographic metasurface antenna for beam-focusing applications at 10 GHz within the X-band frequency regime. The metasurface antenna is printed using a dual-material 3D printer leveraging a biodegradable conductive polymer mater ... Full text Cite

One-Dimensional Metal Nanostructures: From Colloidal Syntheses to Applications.

Journal Article Chemical reviews · August 2019 This Review offers a comprehensive review of the colloidal synthesis, mechanistic understanding, physicochemical properties, and applications of one-dimensional (1D) metal nanostructures. After a brief introduction to the different types of 1D nanostructur ... Full text Cite

Accelerating electrochemistry with metal nanowires

Journal Article Current Opinion in Electrochemistry · August 1, 2019 Scalable, solution-phase syntheses of metal nanowires are enabling their increased use in electrochemical processes. This review highlights recent results demonstrating how metal nanowires can exhibit better durability and higher activity than traditional ... Full text Cite

Selective Electroplating for 3D-Printed Electronics

Journal Article Advanced Materials Technologies · August 1, 2019 Creating 3D-printed parts with embedded circuitry is the next frontier in additive manufacturing, but printing of conductors with performance comparable to bulk metals such as copper is a difficult challenge. A hybrid process based on 3D printing followed ... Full text Cite

Silver nanowire inks for direct-write electronic tattoo applications.

Journal Article Nanoscale · August 2019 Room-temperature printing of conductive traces has the potential to facilitate the direct writing of electronic tattoos and other medical devices onto biological tissue, such as human skin. However, in order to achieve sufficient electrical performance, th ... Full text Cite

Metal Nanowire Felt as a Flow-Through Electrode for High-Productivity Electrochemistry.

Journal Article ACS nano · June 2019 Flow-through electrodes such as carbon paper are used in redox flow batteries, water purification, and electroorganic syntheses. This work examines the extent to which reducing the size of the fibers to the nanoscale in a flow-through electrode can increas ... Full text Cite

One-step electrodeposition of copper on conductive 3D printed objects

Journal Article Additive Manufacturing · May 1, 2019 3D printing with electrically conductive filaments enables rapid prototyping and fabrication of electronics, but the performance of such devices can be limited by the fact that the most conductive thermoplastic-based filaments for 3D printing are 3750 time ... Full text Cite

Three-dimensionally-printed anthropomorphic physical phantom for mammography and digital breast tomosynthesis with custom materials, lesions, and uniform quality control region.

Journal Article J Med Imaging (Bellingham) · April 2019 Anthropomorphic breast phantoms mimic patient anatomy in order to evaluate clinical mammography and digital breast tomosynthesis system performance. Our goal is to create a modular phantom with an anthropomorphic region to allow for improved lesion and cal ... Full text Link to item Cite

Impact of Morphology on Printed Contact Performance in Carbon Nanotube Thin-Film Transistors

Journal Article Advanced Functional Materials · January 4, 2019 Silver nanoparticles (NPs) are the most widely used conductive material throughout the printed electronics space due to their high conductivity and low cost. However, when interfacing with other prominent printed materials, such as semiconducting carbon na ... Full text Cite

Using inkjet 3D printing to create contrast-enhanced textured physical phantoms for CT

Conference Progress in Biomedical Optics and Imaging Proceedings of SPIE · January 1, 2019 Anthropomorphic phantoms can serve as anatomically structured tools for assessing clinical computed tomography (CT) imaging systems. The aim of this project is to create highly customized 3D inkjet-printed, contrast-enhanced physical liver phantoms for use ... Full text Cite

Controlling the position-dependent contrast of 3D printed physical phantoms with a single material

Conference Progress in Biomedical Optics and Imaging Proceedings of SPIE · January 1, 2019 Custom 3D printed physical phantoms are desired for testing the limits of medical imaging, and for providing patientspecific information. This work focuses on the development of low-cost, open source fused filament fabrication for printing of physical phan ... Full text Cite

Single-Crystal Electrochemistry Reveals Why Metal Nanowires Grow.

Conference Journal of the American Chemical Society · November 2018 Shape-control is used to tune the properties of metal nanostructures in applications ranging from catalysts to touch screens, but the origins of anisotropic growth of metal nanocrystals in solution are unknown. We show single-crystal electrochemistry can t ... Full text Cite

Three-Dimensional Printing of a Complete Lithium Ion Battery with Fused Filament Fabrication

Journal Article ACS Applied Energy Materials · October 22, 2018 The ability to 3D print lithium ion batteries (LIBs) in an arbitrary geometry would not only allow the battery form factor to be customized to fit a given product design but also facilitate the use of the battery as a structural component. A major hurdle t ... Full text Cite

Exploring silver contact morphologies in printed carbon nanotube thin-film transistors

Conference Device Research Conference Conference Digest Drc · August 20, 2018 Demand for ubiquitous and flexible electronics to facilitate the rapid growth of Internet- of- Things (IoT) technologies has driven the advancement of printed electronics for low-cost and high-throughput manufacturing. The carbon nanotube thin-film transis ... Full text Cite

Emergence of winner-takes-all connectivity paths in random nanowire networks.

Journal Article Nature communications · August 2018 Nanowire networks are promising memristive architectures for neuromorphic applications due to their connectivity and neurosynaptic-like behaviours. Here, we demonstrate a self-similar scaling of the conductance of networks and the junctions that comprise t ... Full text Cite

The Limits of Primary Radiation Forces in Bulk Acoustic Standing Waves for Concentrating Nanoparticles

Journal Article Particle and Particle Systems Characterization · July 1, 2018 Acoustic waves are increasingly used to concentrate, separate, and pattern nanoparticles in liquids, but the extent to which nanoparticles of different size and composition can be focused is not well-defined. This article describes a simple analytical mode ... Full text Open Access Cite

Multigram Synthesis of Cu-Ag Core–Shell Nanowires Enables the Production of a Highly Conductive Polymer Filament for 3D Printing Electronics

Journal Article Particle and Particle Systems Characterization · May 1, 2018 This article reports a synthesis that yields 4.4 g of Cu nanowires in 1 h, and a method to coat 22 g of Cu nanowires with Ag within 1 h. Due to the large diameters of Cu nanowires (≈240 nm) produced by this synthesis, a Ag:Cu mol ratio of 0.04 is sufficien ... Full text Cite

In-Place Printing of Carbon Nanotube Transistors at Low Temperature

Journal Article ACS Applied Nano Materials · April 27, 2018 Interest in flexible, stretchable, and wearable electronics has motivated the development of additive printing to fabricate customizable devices and systems directly onto virtually any surface. However, progress has been limited by the relatively high temp ... Full text Cite

Modulating the Growth Rate, Aspect Ratio, and Yield of Copper Nanowires with Alkylamines

Journal Article Chemistry of Materials · April 24, 2018 This article shows how the chain length of alkylamine capping agents and the corresponding stability of their self-assembled monolayers on a Cu surface determines the growth rate, yield, and dimensions of Cu nanowires produced in a solution-phase synthesis ... Full text Cite

Stretchable Conductive Composites from Cu-Ag Nanowire Felt.

Journal Article ACS nano · April 2018 Materials that retain a high conductivity under strain are essential for wearable electronics. This article describes a conductive, stretchable composite consisting of a Cu-Ag core-shell nanowire felt infiltrated with a silicone elastomer. This composite e ... Full text Cite

3D printed anthropomorphic physical phantom for mammography and DBT with high contrast custom materials, lesions, and uniform chest wall region

Conference Progress in Biomedical Optics and Imaging Proceedings of SPIE · January 1, 2018 Anthropomorphic breast phantoms mimic anatomy to evaluate the performance of clinical mammography and digital breast tomosynthesis (DBT) systems. Our goal is to make a phantom that mimics clinically relevant appearance of a patient to allow for improved im ... Full text Cite

3D printing electronic components and circuits with conductive thermoplastic filament

Journal Article Additive Manufacturing · December 1, 2017 This work examines the use of dual-material fused filament fabrication for 3D printing electronic components and circuits with conductive thermoplastic filaments. The resistivity of traces printed from conductive thermoplastic filaments made with carbon-bl ... Full text Cite

Fully printed memristors from Cu-SiO2 core-shell nanowire composites

Conference Device Research Conference Conference Digest Drc · August 1, 2017 An area of printed electronics in which additional development is necessary is printable non-volatile memory, which will be essential for the development of fully printed RFID tags and sensors with integrated data storage.[1] An approach to making a printa ... Full text Cite

Fully Printed Memristors from Cu–SiO2 Core–Shell Nanowire Composites

Journal Article Journal of Electronic Materials · July 1, 2017 This article describes a fully printed memory in which a composite of Cu–SiO2 nanowires dispersed in ethylcellulose acts as a resistive switch between printed Cu and Au electrodes. A 16-cell crossbar array of these memristors was printed with an ... Full text Cite

Microwave metamaterials made by fused deposition 3D printing of a highly conductive copper-based filament

Journal Article Applied Physics Letters · May 1, 2017 This work reports a method for fabricating three-dimensional microwave metamaterials by fused deposition modeling 3D printing of a highly conductive polymer composite filament. The conductivity of such a filament is shown to be nearly equivalent to that of ... Full text Cite

3D Printing of a Double Network Hydrogel with a Compression Strength and Elastic Modulus Greater than those of Cartilage.

Journal Article ACS biomaterials science & engineering · May 2017 This article demonstrates a two-step method to 3D print double network hydrogels at room temperature with a low-cost ($300) 3D printer. A first network precursor solution was made 3D printable via extrusion from a nozzle by adding a layered silicate to mak ... Full text Cite

Ethylenediamine Promotes Cu Nanowire Growth by Inhibiting Oxidation of Cu(111).

Journal Article Journal of the American Chemical Society · January 2017 The synthesis of metal nanostructures usually requires a capping agent that is generally thought to cause anisotropic growth by blocking the addition of atoms to specific crystal facets. This work uses a series of electrochemical measurements with a quartz ... Full text Cite

Effect of Morphology on the Electrical Resistivity of Silver Nanostructure Films.

Journal Article ACS applied materials & interfaces · January 2017 The relatively high temperatures (>200 °C) required to sinter silver nanoparticle inks have limited the development of printed electronic devices on low-cost, heat-sensitive paper and plastic substrates. This article explores the change in morphology and r ... Full text Cite

Third generation anthropomorphic physical phantom for mammography and DBT: Incorporating voxelized 3D printing and uniform chest wall QC region

Conference Progress in Biomedical Optics and Imaging Proceedings of SPIE · January 1, 2017 Physical breast phantoms provide a standard method to test, optimize, and develop clinical mammography systems, including new digital breast tomosynthesis (DBT) systems. In previous work, we produced an anthropomorphic phantom based on 500x500x500 μm breas ... Full text Cite

High-speed, solution-coatable memory based on Cu-SiO2 core-shell nanowires.

Journal Article Nanoscale horizons · July 2016 Printable electronics has the potential to drastically reduce the environmental and economic costs associated with the production of electronic devices, as well as enable rapid prototyping of circuits and their printing on demand, similar to what 3D printi ... Full text Cite

Carbamide promoted polyol synthesis and transmittance properties of silver nanocubes

Journal Article Inorganic Chemistry Frontiers · April 1, 2016 In this work, silver (Ag) nanocubes with different sizes were rapidly synthesized with a modified HCl-based polyol approach by employing carbamide (CO(NH2)2) as the additive or promoter, which could shorten the reaction time from abou ... Full text Cite

How Copper Nanowires Grow and How To Control Their Properties.

Journal Article Accounts of chemical research · March 2016 Scalable, solution-phase nanostructure synthesis has the promise to produce a wide variety of nanomaterials with novel properties at a cost that is low enough for these materials to be used to solve problems. For example, solution-synthesized metal nanowir ... Full text Cite

Synthesis of Cu-Ag, Cu-Au, and Cu-Pt Core-Shell Nanowires and Their Use in Transparent Conducting Films

Journal Article Chemistry of Materials · November 4, 2015 This article describes a room-temperature solution-phase process for the synthesis of copper-silver (Cu-Ag), copper-gold (Cu-Au), and copper-platinum (Cu-Pt) core-shell nanowires (NWs) in which ascorbic acid removes the passivating copper oxide coating fro ... Full text Cite

On the road to metallic nanoparticles by rational design: bridging the gap between atomic-level theoretical modeling and reality by total scattering experiments.

Journal Article Nanoscale · November 2015 The extent to which current theoretical modeling alone can reveal real-world metallic nanoparticles (NPs) at the atomic level was scrutinized and demonstrated to be insufficient and how it can be improved by using a pragmatic approach involving straightfor ... Full text Cite

Synthesis and Purification of Silver Nanowires To Make Conducting Films with a Transmittance of 99%.

Journal Article Nano letters · October 2015 Metal nanowire (NW) networks have the highest performance of any solution-coatable alternative to ITO, but there is as yet no published process for producing NW films with optoelectronic performance that exceeds that of ITO. Here, we demonstrate a process ... Full text Cite

Effects of length dispersity and film fabrication on the sheet resistance of copper nanowire transparent conductors.

Journal Article Nanoscale · September 2015 Development of thin-film transparent conductors (TC) based on percolating networks of metal nanowires has leaped forward in recent years, owing to the improvement of nanowire synthetic methods and modeling efforts by several research groups. While silver n ... Full text Cite

Assembly of colloidal molecules, polymers, and crystals in acoustic and magnetic fields.

Journal Article Advanced materials (Deerfield Beach, Fla.) · August 2015 A dynamically adjustable colloidal assembly technique is presented, which combines magnetic and acoustic fields to produce a wide range of colloidal structures, ranging from discrete colloidal molecules, to polymer networks and crystals. The structures can ... Full text Cite

Copper as a robust and transparent electrocatalyst for water oxidation.

Journal Article Angewandte Chemie (International ed. in English) · February 2015 Copper metal is in theory a viable oxidative electrocatalyst based on surface oxidation to Cu(III) and/or Cu(IV) , but its use in water oxidation has been impeded by anodic corrosion. The in situ formation of an efficient interfacial oxygen-evolving Cu cat ... Full text Cite

Photocatalytic growth of copper nanowires from Cu2O seeds

Journal Article Chemistry of Materials · January 27, 2015 This article describes the photocatalytic growth of copper nanowires from Cu2O octahedra. When exposed to visible light with an energy greater than the band gap of Cu2O, electrons excited from the valence band to the conduction band w ... Full text Cite

Metal nanowire networks: the next generation of transparent conductors.

Journal Article Advanced materials (Deerfield Beach, Fla.) · October 2014 There is an ongoing drive to replace the most common transparent conductor, indium tin oxide (ITO), with a material that gives comparable performance, but can be coated from solution at speeds orders of magnitude faster than the sputtering processes used t ... Full text Cite

Oxidative etching for controlled synthesis of metal nanocrystals: atomic addition and subtraction.

Journal Article Chemical Society reviews · September 2014 Since the discovery of the role of oxidative etching in shape-controlled metal nanostructure synthesis in 2004, it has become a versatile tool to precisely manipulate the nucleation and growth of metal nanocrystals at the atomic level. Subsequent research ... Full text Cite

Copper nanowire networks with transparent oxide shells that prevent oxidation without reducing transmittance.

Journal Article ACS nano · September 2014 Transparent conducting films of solution-synthesized copper nanowires are an attractive alternative to indium tin oxide due to the relative abundance of Cu and the low cost of solution-phase nanowire coating processes. However, there has to date been no wa ... Full text Cite

Real-time visualization of diffusion-controlled nanowire growth in solution.

Journal Article Nano letters · August 2014 This Letter shows that copper nanowires grow through the diffusion-controlled reduction of dihydroxycopper(I), Cu(OH)2(-). A combination of potentiostatic coulometry, UV-visible spectroscopy, and thermodynamic calculations was used to determine the species ... Full text Cite

Solution-processed copper-nickel nanowire anodes for organic solar cells.

Journal Article Nanoscale · June 2014 This work describes a process to make anodes for organic solar cells from copper-nickel nanowires with solution-phase processing. Copper nanowire films were coated from solution onto glass and made conductive by dipping them in acetic acid. Acetic acid rem ... Full text Cite

The role of cuprous oxide seeds in the one-pot and seeded syntheses of copper nanowires.

Journal Article Small (Weinheim an der Bergstrasse, Germany) · May 2014 This paper demonstrates that Cu2O nanoparticles form in the early stages of a solution-phase synthesis of copper nanowires, and aggregate to form the seeds from which copper nanowires grow. Removal of ethylenediamine from the synthesis leads to the rapid f ... Full text Cite

A rapid synthesis of high aspect ratio copper nanowires for high-performance transparent conducting films.

Journal Article Chemical communications (Cambridge, England) · March 2014 This communication presents a way to produce copper nanowires with aspect ratios as high as 5700 in 30 min, and describes the growth processes responsible for their formation. These nanowires were used to make transparent conducting films with a transmitta ... Full text Cite

Optically transparent hydrogen evolution catalysts made from networks of copper-platinum core-shell nanowires

Journal Article Energy and Environmental Science · January 1, 2014 This article reports the fabrication of copper-platinum core-shell nanowires by electroplating platinum onto copper nanowires, and the first demonstration of their use as a transparent, conducting electrocatalyst for the hydrogen evolution reaction (HER). ... Full text Cite

Optically transparent water oxidation catalysts based on copper nanowires.

Journal Article Angewandte Chemie (International ed. in English) · December 2013 Let the light shine through: A transparent film of copper nanowires was transformed into an electrocatalyst for water oxidation by electrodepostion of Ni or Co onto the surface of the nanowires. These core-shell nanowire networks exhibit electrocatalytic p ... Full text Cite

Integrating simulations and experiments to predict sheet resistance and optical transmittance in nanowire films for transparent conductors.

Journal Article ACS nano · September 2013 Metal nanowire films are among the most promising alternatives for next-generation flexible, solution-processed transparent conductors. Breakthroughs in nanowire synthesis and processing have reported low sheet resistance (Rs ≤ 100 Ω/sq) and high optical t ... Full text Cite

From core-shell to alloys: The preparation and characterization of solution-synthesized AuPd nanoparticle catalysts

Journal Article Journal of Physical Chemistry C · August 29, 2013 This article describes the solution-phase synthesis of 4 nm gold nanoparticles with 0.7 atom-thick, 1.9 atom-thick, and 3.8 atom-thick layers of Pd on their surfaces. These well-defined core-shell nanoparticles were deposited on a silica support, calcined, ... Full text Cite

Reversible sliding in networks of nanowires.

Journal Article Nano letters · June 2013 This work demonstrates that metal nanowires in a percolating network can reversibly slide across one another. Reversible sliding allows networks of metal nanowires to maintain electrical contact while being stretched to strains greater than the fracture st ... Full text Cite

Plasmonic waveguide modes of film-coupled metallic nanocubes.

Journal Article Nano letters · January 2013 A metallic nanoparticle positioned over a metal film offers great advantages as a highly controllable system relevant for probing field-enhancement and other plasmonic effects. Because the size and shape of the gap between the nanoparticle and film can be ... Full text Cite

Controlled-reflectance surfaces with film-coupled colloidal nanoantennas.

Journal Article Nature · December 2012 Efficient and tunable absorption is essential for a variety of applications, such as designing controlled-emissivity surfaces for thermophotovoltaic devices, tailoring an infrared spectrum for controlled thermal dissipation and producing detector elements ... Full text Cite

Synthesis of oxidation-resistant cupronickel nanowires for transparent conducting nanowire networks.

Journal Article Nano letters · June 2012 Nanowires of copper can be coated from liquids to create flexible, transparent conducting films that can potentially replace the dominant transparent conductor, indium tin oxide, in displays, solar cells, organic light-emitting diodes, and electrochromic w ... Full text Cite

Size effects on elasticity, yielding, and fracture of silver nanowires: In situ experiments

Journal Article Physical Review B Condensed Matter and Materials Physics · January 30, 2012 This paper reports the quantitative measurement of a full spectrum of mechanical properties of fivefold twinned silver (Ag) nanowires (NWs), including Young's modulus, yield strength, and ultimate tensile strength. In-situ tensile testing of Ag NWs with di ... Full text Cite

The effect of nanowire length and diameter on the properties of transparent, conducting nanowire films

Journal Article Nanoscale · 2012 This article describes how the dimensions of nanowires affect the transmittance and sheet resistance of a random nanowire network. Silver nanowires with independently controlled lengths and diameters were synthesized with a gram-scale polyol synthesis by c ... Full text Open Access Cite

Binary colloidal structures assembled through Ising interactions

Journal Article Nature Communications · 2012 New methods for inducing microscopic particles to assemble into useful macroscopic structures could open pathways for fabricating complex materials that cannot be produced by lithographic methods. Here we demonstrate a colloidal assembly technique that use ... Full text Link to item Cite

Solution-processed flexible polymer solar cells with silver nanowire electrodes.

Journal Article ACS applied materials & interfaces · October 2011 The conventional anode for organic photovoltaics (OPVs), indium tin oxide (ITO), is expensive and brittle, and thus is not suitable for use in roll-to-roll manufacturing of OPVs. In this study, fully solution-processed polymer bulk heterojunction (BHJ) sol ... Full text Cite

Stretchable microfluidic electric circuit applied for radio frequency antenna

Journal Article Proceedings Electronic Components and Technology Conference · July 21, 2011 This paper describes a new method for fabricating highly stretchable and robust electrical circuits. The circuits consist of liquid metal (eutectic gallium indium alloy, EGaIn) enclosed in elastomeric microfluidic channels. In particular, a microfluidic hy ... Full text Cite

Imaginary magnetic tweezers for massively parallel surface adhesion spectroscopy.

Journal Article Nano letters · April 2011 A massively parallel magnetic tweezer system has been constructed that utilizes the self-repulsion of colloidal beads from a planar interface via a magnetic dipole image force. Self-repulsion enables the application of a uniform magnetic force to thousands ... Full text Cite

Strain-release assembly of nanowires on stretchable substrates.

Journal Article ACS nano · February 2011 A simple yet effective method for assembly of highly aligned nanowires (NWs) on stretchable substrates is reported. In this method, NWs were first transferred to a strained stretchable substrate. After the strain was released, the NWs aligned in the transv ... Full text Cite

Programmable diagnostic devices made from paper and tape.

Journal Article Lab on a chip · October 2010 This paper describes three-dimensional microfluidic paper-based analytical devices (3-D microPADs) that can be programmed (postfabrication) by the user to generate multiple patterns of flow through them. These devices are programmed by pressing single-use ... Full text Cite

Nanofabrication at high throughput and low cost.

Journal Article ACS nano · July 2010 The task of nanofabrication can, in principle, be divided into two separate tracks: generation and replication of the patterned features. These two tracks are different in terms of characteristics, requirements, and aspects of emphasis. In general, generat ... Full text Open Access Cite

Stretchable microfluidic radiofrequency antennas.

Journal Article Advanced materials (Deerfield Beach, Fla.) · July 2010 Full text Cite

Thin, lightweight, foldable thermochromic displays on paper.

Journal Article Lab on a chip · October 2009 This article describes an electronic display that is fabricated by patterning electrically conductive wires (heaters) with micron-scale dimensions on one side of a sheet of paper, and thermochromic ink on the opposite side. Passing electrical current throu ... Full text Cite

Integrated fabrication and magnetic positioning of metallic and polymeric nanowires embedded in thin epoxy slabs.

Journal Article ACS nano · October 2009 This paper describes a process for the fabrication and positioning of nanowires (of Au, Pd, and conjugated polymers) embedded in thin epoxy slabs. The procedure has four steps: (i) coembedding a thin film of metal or conducting polymer with a thin film of ... Full text Cite

Mid-IR plasmonics: near-field imaging of coherent plasmon modes of silver nanowires.

Journal Article Nano letters · July 2009 Chemically synthesized metallic nanostructures can exhibit a strong local optical field enhancement associated with their high degree of crystallinity and well-defined geometry-dependent surface plasmon resonances. The extension of the plasmon modes into t ... Full text Cite

Infochemistry and infofuses for the chemical storage and transmission of coded information.

Journal Article Proceedings of the National Academy of Sciences of the United States of America · June 2009 This article describes a self-powered system that uses chemical reactions--the thermal excitation of alkali metals--to transmit coded alphanumeric information. The transmitter (an "infofuse") is a strip of the flammable polymer nitrocellulose patterned wit ... Full text Cite

Fabrication of surface plasmon resonators by nanoskiving single-crystalline gold microplates

Journal Article Proceedings of SPIE the International Society for Optical Engineering · May 5, 2009 This paper demonstrates the sectioning of chemically synthesized, single-crystalline microplates of gold with an ultramicrotome to produce single-crystalline nanowires. This method produces collinearly aligned nanostructures with small, regular changes in ... Full text Cite

Chemical synthesis of novel plasmonic nanoparticles.

Journal Article Annual review of physical chemistry · January 2009 Under the irradiation of light, the free electrons in a plasmonic nanoparticle are driven by the alternating electric field to collectively oscillate at a resonant frequency in a phenomenon known as surface plasmon resonance. Both calculations and measurem ... Full text Cite

Size-dependent joule heating of gold nanoparticles using capacitively coupled radiofrequency fields

Journal Article Nano Research · January 1, 2009 Capacitively coupled shortwave radiofrequency fields (13.56 MHz) resistively heat low concentrations (1 ppm) of gold nanoparticles with a thermal power dissipation of 380 kW/g of gold. Smaller diameter gold nanoparticles (< 50 nm) heat at nearly twice the ... Full text Cite

A microfluidic apparatus for the study of ice nucleation in supercooled water drops

Journal Article Lab on A Chip · January 1, 2009 This paper describes a microfluidic instrument that produces drops of supercooled water suspended in a moving stream of liquid fluorocarbon, and measures the temperatures at which ice nucleates in the drops. A microfluidic chip containing a monodisperse dr ... Full text Cite

FLASH: a rapid method for prototyping paper-based microfluidic devices.

Journal Article Lab on a chip · December 2008 This article describes FLASH (Fast Lithographic Activation of Sheets), a rapid method for laboratory prototyping of microfluidic devices in paper. Paper-based microfluidic devices are emerging as a new technology for applications in diagnostics for the dev ... Full text Cite

Integration of photonic and silver nanowire plasmonic waveguides.

Journal Article Nature nanotechnology · November 2008 Future optical data transmission modules will require the integration of more than 10,000 x 10,000 input and output channels to increase data transmission rates and capacity. This level of integration, which greatly exceeds that of a conventional diffracti ... Full text Cite

Optical near-field mapping of plasmonic nanoprisms.

Journal Article Nano letters · October 2008 The optical local-field enhancement on nanometer length scales provides the basis for plasmonic metal nanostructures to serve as molecular sensors and as nanophotonic devices. However, particle morphology and the associated surface plasmon resonance alone ... Full text Cite

Fabrication of surface plasmon resonators by nanoskiving single-crystalline gold microplates.

Journal Article Nano letters · September 2008 This paper demonstrates the sectioning of chemically synthesized, single-crystalline microplates of gold with an ultramicrotome (nanoskiving) to produce single-crystalline nanowires; these nanowires act as low-loss surface plasmon resonators. This method p ... Full text Cite

On the polyol synthesis of silver nanostructures: glycolaldehyde as a reducing agent.

Journal Article Nano letters · July 2008 The polyol synthesis is a popular method of preparing metal nanostructures, yet the mechanism by which metal ions are reduced is poorly understood. Using a spectrophotometric method, we show, for the first time, that heating ethylene glycol (EG) in air res ... Full text Cite

Morphological evolution of single-crystal Ag nanospheres during the galvanic replacement reaction with HAuCl4

Journal Article Journal of Physical Chemistry C · May 29, 2008 This paper presents a systematic study of the galvanic replacement reaction between 23.5 nm single-crystal Ag nanospheres and HAuCl4 in an aqueous medium. We have monitored both morphological and spectral changes as the molar ratio of HAuCl ... Full text Cite

Nanocrystals with unconventional shapes - A class of promising catalysts

Journal Article Angewandte Chemie International Edition · October 9, 2007 Size and shape do matter sometimes: Nanocrystals of noble metals are attractive for use as catalysts because of their high surface-to-volume ratios and high surface energies, which result in their surface atoms being highly active. Recently reported platin ... Full text Cite

Synthesis of silver nanostructures with controlled shapes and properties

Journal Article Accounts of Chemical Research · October 1, 2007 Mastery over the shape of a nanostructure enables control over its properties and usefulness for a given application. By controlling the crystallinity of the seeds from which nanostructures grow and the rate of atomic addition to seeds, we selectively prod ... Full text Cite

One-dimensional nanostructures of metals: Large-scale synthesis and some potential applications

Journal Article Langmuir · April 10, 2007 We review recent developments in our group regarding the solution-phase synthesis of one-dimensional nanostructures of metals. The synthetic approaches include solution-liquid-solid growth for nanowires of low-melting-point metals such as Pb; seed-directed ... Full text Cite

Resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance-based detection

Journal Article Sensors and Actuators B Chemical · April 10, 2007 We describe the resonance wavelength-dependent signal of absorptive particles in surface plasmon resonance (SPR)-based detection using both modeling and experimental results. The particles, gold nanocages, have a significant absorption cross-section in the ... Full text Cite

Synthesis and optical properties of silver nanobars and nanorice.

Journal Article Nano letters · April 2007 Silver nanobars with rectangular side facets and an average aspect ratio of 2.7 have been synthesized by modifying the concentration of bromide added to a polyol synthesis. Subsequent rounding of nanobars transformed them into nanorice. Due to their anisot ... Full text Cite

Synthesis and mechanistic study of palladium nanobars and nanorods

Journal Article Journal of the American Chemical Society · March 28, 2007 This paper describes a simple and versatile method for growing highly anisotropic nanostructures of Pd, single-crystal nanobars bounded by {100} facets and single-crystal nanorods with their side surfaces enclosed by {100} and {110} facets. According to th ... Full text Cite

Time-resolved spectroscopy of silver nanocubes: Observation and assignment of coherently excited vibrational modes

Journal Article Journal of Chemical Physics · March 14, 2007 The response of single crystal, cubic silver particles to ultrafast laser-induced heating has been examined experimentally and theoretically. The transient absorption traces display clear modulations due to coherently excited vibrational modes. Nanocube sa ... Full text Cite

Vibrational spectroscopy and energy relaxation of nanocubes, nanoboxes and nanocages

Journal Article Proceedings of SPIE the International Society for Optical Engineering · November 23, 2006 Irradiating metal particles by an ultrafast laser pulse produces rapid heating of the lattice. This can lead to coherent excitation of the vibrational modes of the particle that correlate with the expansion co-ordinates. By comparing the measured periods t ... Full text Cite

The role of thickness transitions in convective assembly.

Journal Article Nano letters · October 2006 Here we examine the microscopic details of convective assembly, a process in which thin colloidal crystals are deposited on a substrate from suspensions of nearly monodisperse spheres. Previously, such crystals have been shown to exhibit a strong tendency ... Full text Cite

Synthesis and electrical characterization of silver nanobeams.

Journal Article Nano letters · October 2006 By slowing the rate of atomic addition to singly twinned seeds, we have grown silver nanobeams with lengths of 3-30 mum, widths ranging from 17 to 70 nm, and a width to thickness ratio of 1.4. The well-defined dimensions, smooth surface, and crystallinity ... Full text Cite

Maneuvering the surface plasmon resonance of silver nanostructures through shape-controlled synthesis

Journal Article Journal of Physical Chemistry B · August 17, 2006 Silver nanostructures are containers for surface plasmons - the collective oscillation of conduction electrons in phase with incident light. By controlling the shape of the container, one can control the ways in which electrons oscillate, and in turn how t ... Full text Cite

Observation of plasmon propagation, redirection, and fan-out in silver nanowires.

Journal Article Nano letters · August 2006 We report the coupling of free-space photons (vacuum wavelength of 830 nm) to surface plasmon modes of a silver nanowire. The launch of propagating plasmons, and the subsequent emission of photons, is selective and occurs only at ends and other discontinui ... Full text Cite

Right bipyramids of silver: a new shape derived from single twinned seeds.

Journal Article Nano letters · April 2006 Silver nanoparticles with a single (111) twin were selectively nucleated and grown for the first time to produce right bipyramids 75-150 nm in edge length. Key to the production of single twinned seeds was the addition of NaBr to a polyol synthesis in whic ... Full text Cite

Synthesis, stability, and surface plasmonic properties of rhodium multipods, and their use as substrates for surface-enhanced raman scattering

Journal Article Angewandte Chemie International Edition · February 13, 2006 (Graph Presented) Multipodal Rh nanocrystals (see HRTEM image of a tripod) prepared through a polyol synthesis display surface plasmon resonance bands in the visible region. Surface-enhanced Raman scattering from 4-mercaptopyridine adsorbed on Rh multipods ... Full text Cite

Bioconjugated Au/Ag nanocages as a novel optical imaging contrast and thermal therapeutic agent

Journal Article Optics Infobase Conference Papers · January 1, 2006 We have synthesized 40-nm Au/Ag nanocages and explored their use as an optical imaging/spectroscopy contrast agent and potentially a thermal therapeutic agent. Cancer cell specific targeting by antibody-conjugated nanocages has also been demonstrated. © 20 ... Cite

Corrosion-based synthesis of single-crystal Pd nanoboxes and nanocages and their surface plasmon properties

Journal Article Angewandte Chemie International Edition · December 9, 2005 (Figure Presented) Inside out: Corrosive pitting and etching can be combined in a simple, elegant, and powerful method to transform single-crystal Pd nanocubes into nanoboxes (see SEM image) and nanocages in a one-pot synthesis without the involvement of e ... Full text Cite

Bioconjugated Au/Ag nanocages as a novel optical imaging contrast and thermal therapeutic agent

Journal Article 2005 Conference on Lasers and Electro Optics CLEO · December 1, 2005 We have synthesized 40-nm Au/Ag nanocages and explored their use as an optical imaging/spectroscopy contrast agent and potentially a thermal therapeutic agent. Cancer cell specific targeting by antibody-conjugated nanocages has also been demonstrated. ©200 ... Cite

Gold nanocages as contrast agents for spectroscopic optical coherence tomography.

Journal Article Optics letters · November 2005 We describe gold nanocages as a new class of potential contrast agent for spectroscopic optical coherence tomography (OCT). Monodispersed gold nanocages of an approximately 35 nm edge length exhibit strong optical resonance, with the peak wavelength tunabl ... Full text Cite

Optical properties of Pd-Ag and Pt-Ag nanoboxes synthesized via galvanic replacement reactions

Journal Article Nano Letters · October 1, 2005 Silver nanocubes dispersed in water were transformed into Pd-Ag or Pt-Ag nanoboxes by adding either Na 2PdCl 4 or Na 2PtCl 4. By controlling the amount of noble metal salt added, and therefore the molar ratio of ... Full text Cite

Localized surface plasmon resonance spectroscopy of single silver nanocubes

Journal Article Nano Letters · October 1, 2005 In this work, we use dark-field microscopy to observe a new plasmon resonance effect for a single silver nanocube in which the plasmon line shape has two distinct peaks when the particles are located on a glass substrate. The dependence of the resonance on ... Full text Cite

Gold nanocages: Engineering their structure for biomedical applications

Journal Article Advanced Materials · September 16, 2005 The galvanic replacement reaction between a Ag template and HAuCl 4 in an aqueous solution transforms 30-200 nm Ag nanocubes into Au nanoboxes and nanocages (nanoboxes with porous walls). By controlling the molar ratio of Ag to HAuCl4 ... Full text Cite

Polyol synthesis of silver nanostructures: Control of product morphology with Fe(II) or Fe(III) Species

Journal Article Langmuir · August 30, 2005 Adjusting the concentration of Fe(II) or Fe(III) in the polyol reduction of silver nitrate allows for the production of either nanocubes or nanowires. Reduction by ethylene glycol maintained the iron ions in the reduced Fe(II) form, which in turn reacted w ... Full text Cite

Quick formation of single-crystal nanocubes of silver through dual functions of hydrogen gas in polyol synthesis

Journal Article Chemical Physics Letters · August 15, 2005 High yields of 40-nm silver nanocubes were produced in 20 min by bubbling hydrogen gas through a conventional polyol synthesis. Hydrogen gas both accelerated the reduction rate and generated nitric acid in situ. Twinned seeds were selectively dissolved by ... Full text Cite

Size-dependence of surface plasmon resonance and oxidation for Pd nanocubes synthesized via a seed etching process.

Journal Article Nano letters · July 2005 Pd nanocubes between 8 and 50 nm in size were synthesized at the same concentration of Na2PdCl4 precursor by controlling the number of seeds formed in the nucleation stage. Increasing the concentration of FeCl3, an oxidative etchant for Pd, reduced the num ... Full text Cite

Ag-Ag 0.08v 2O 5·nH 2O composite films as host materials for Li + intercalation

Journal Article Physica Status Solidi A Applications and Materials Science · June 1, 2005 We have prepared Ag-Ag 0.08V 2O 5· nH 2O composite films by dispersing Ag nanowires into V 2O 5·nH 2O sol and have investigated electrochemical properties of the films for Li Full text Cite

Understanding the role of oxidative etching in the polyol synthesis of Pd nanoparticles with uniform shape and size.

Journal Article Journal of the American Chemical Society · May 2005 Uniform cubooctahedral nanoparticles of Pd were synthesized using a modified polyol process. Like the silver system, the Pd nanoparticles underwent dissolution due to oxidative etching by Cl-/O2. In the early stage of etching, the twinned particles in a sa ... Full text Cite

Large-scale synthesis of silver nanocubes: The role of HCl in promoting cube perfection and monodispersity

Journal Article Angewandte Chemie International Edition · March 29, 2005 (Chemical Equation Presented) One lump or two! Selective etching of twinned seeds, mediated by HCl and the oxygen in air, resulted in high yields of perfect single-crystal silver nanocubes in a range of sizes (30-130 nm). The chloride ion enhances oxidatio ... Full text Cite

Gold nanocages: bioconjugation and their potential use as optical imaging contrast agents.

Journal Article Nano letters · March 2005 Gold nanocages of <40 nm in dimension have been synthesized using the galvanic replacement reaction between Ag nanocubes and HAuCl4 in an aqueous solution. By controlling the molar ratio between Ag and HAuCl4, the gold nanocages could be tuned to display s ... Full text Cite

Wavelength-dependent signal amplification potential of gold nanocage tags for surface plasmon resonance (SPR) imaging

Journal Article Micro Total Analysis Systems Proceedings of Microtas 2005 Conference 9th International Conference on Miniaturized Systems for Chemistry and Life Sciences · January 1, 2005 This paper reports an investigation of the surface plasmon resonance (SPR) signal amplification potential of custom synthesized 40 nm gold nanocages with localized surface plasmon resonance (LSPR) in the near-infrared (NIR). Copyright © 2005 by the Transdu ... Cite

Shape-controlled synthesis of silver and gold nanostructures

Journal Article MRS Bulletin · January 1, 2005 This article provides a brief account of solution-phase methods that generate silver and gold nanostructures with well-controlled shapes. It is organized into five sections: The first section discusses the nucleation and formation of seeds from which nanos ... Full text Cite

Shape-controlled synthesis of metallic nanostructures for nanocomposites

Conference 5th World Congress Enabling Technologies and New Markets Nanocomposites 2005 · January 1, 2005 To manufacture nanocomposites for macroscopic applications, a macroscopic amount of nanostructure building blocks is required. I will present a solution phase synthesis that produces large quantities of silver, gold, platinum, and palladium nanostructures ... Cite

Shape-controlled synthesis of metal nanostructures: the case of silver.

Journal Article Chemistry (Weinheim an der Bergstrasse, Germany) · January 2005 The concept of shape-controlled synthesis is discussed by investigating the growth mechanisms for silver nanocubes, nanowires, and nanospheres produced through a polymer-mediated polyol process. Experimental parameters, such as the concentration of AgNO(3) ... Full text Cite

Shape-controlled synthesis of silver and gold nanostructures

Journal Article MRS Bulletin · 2005 This article provides a brief account of solution-phase methods that generate silver and gold nanostructures with well-controlled shapes. It is organized into five sections: The first section discusses the nucleation and formation of seeds from which nanos ... Cite

Bioconjugated Au/Ag nanocages as a novel optical imaging contrast and thermal therapeutic agent

Journal Article Optics Infobase Conference Papers · January 1, 2005 We have synthesized 40-nm Au/Ag nanocages and explored their use as an optical imaging/spectroscopy contrast agent and potentially a thermal therapeutic agent. Cancer cell specific targeting by antibody-conjugated nanocages has also been demonstrated. © 20 ... Cite

Polyol synthesis of silver nanoparticles: Use of chloride and oxygen to promote the formation of single-crystal, truncated cubes and tetrahedrons

Journal Article Nano Letters · September 1, 2004 Single-crystal cubes and tetrahedrons of silver with truncated corners/edges have been prepared for the first time in high yields by reducing silver nitrate with ethylene glycol heated to 148°C in the presence of poly(vinyl pyrrolidone) and a trace amount ... Full text Cite

Synthesis and optical properties of nanorattles and multiple-walled nanoshells/nanotubes made of metal alloys

Journal Article Journal of the American Chemical Society · August 4, 2004 The galvanic replacement reaction between silver and chloroauric acid has been exploited as a powerful means for preparing metal nanostructures with hollow interiors. Here, the utility of this approach is further extended to produce complex core/shell nano ... Full text Cite