Scholars@Duke
Alexis Carpenter

Alexis Carpenter

Instructor in the Pratt School of Engineering
Pratt School of Engineering
Manage Profile
Embed Profile Data

Selected Publications

Sustainable environmental remediation using NZVI by managing benefit-risk trade-offs

Chapter · January 31, 2019 Ensuring the sustainable development and use of NZVI for in situ remediation requires the incorporation of a multitude of factors and criteria, including those related to technology performance, cost, potential impacts to the environment and human health, ... Full text Cite

Low thermal conductivity carbon fibrous composite nanomaterial enabled by multi-scale porous structure

Journal Article Materials and Design · November 15, 2017 Low thermal conductivity carbon is a type of material for special uses such as thermal insulation/protection and particularly for ablative thermal protection material of reentry vehicles and rocket engine components. In this research, a low thermal conduct ... Full text Cite

Cellulose nanocrystal zero-valent iron nanocomposites for groundwater remediation.

Journal Article Environmental science. Nano · June 2017 Zero-valent iron nanoparticles (nano-ZVIs) have been widely studied for in situ remediation of groundwater and other environmental matrices. Nano-ZVI particle mobility and reactivity are still the main impediments in achieving efficient in situ Full text Cite

Controlled release polymer structures for in situ remediation

Conference Advanced Materials - TechConnect Briefs 2016 · January 1, 2016 For the environmental remediation industry, AxNano is developing novel In-Situ Chemical Oxidation (ISCO) products based upon novel Controlled Release Polymer Structures (CRPS). Invented at North Carolina A&T SU, this new class of controlled delivery struct ... Cite

Enhanced Biogas Production from Nanoscale Zero Valent Iron-Amended Anaerobic Bioreactors.

Journal Article Environmental engineering science · August 2015 Addition of nanoscale zero valent iron (NZVI) to anaerobic batch reactors to enhance methanogenic activity is described. Two NZVI systems were tested: a commercially available NZVI (cNZVI) slurry and a freshly synthesized NZVI (sNZVI) suspension that was p ... Full text Cite

Cellulose nanomaterials in water treatment technologies.

Journal Article Environmental science & technology · May 2015 Cellulose nanomaterials are naturally occurring with unique structural, mechanical and optical properties. While the paper and packaging, automotive, personal care, construction, and textiles industries have recognized cellulose nanomaterials' potential, w ... Full text Cite

Advanced manufacturing process for producing nanofiber yarns

Conference NSTI: Advanced Materials - TechConnect Briefs 2015 · January 1, 2015 AxNano, LLC, in collaboration with the Joint School of Nanoscience and Nanoengineering of North Carolina A&T State University, has developed a novel method for producing robust, high-volume, costeffective carbon fibers in support of next-generation materia ... Cite

Advanced manufacturing process for producing nanofiber yarns

Conference Fiber Society 2015 Fall Meeting and Technical Conference - Fibers: Where Tradition Meets Innovation · January 1, 2015 AxNano, LLC, in collaboration with the Joint School of Nanoscience and Nanoengineering of North Carolina A&T State University, has developed a novel method for producing robust, high-volume, cost-effective carbon fibers in support of next-generation materi ... Cite

Nitric oxide-releasing silica nanoparticles with varied surface hydrophobicity

Journal Article Colloids and Surfaces A: Physicochemical and Engineering Aspects · July 20, 2014 Hydrocarbon- and fluorocarbon-based silanes were grafted onto the surface of amine-containing silica nanoparticles to achieve materials of varied surface hydrophobicity. X-ray photoelectron spectroscopy and direct polarization solid-state nuclear magnetic ... Full text Cite

Role of size and shape on biofilm eradication for nitric oxide-releasing silica nanoparticles.

Journal Article ACS applied materials & interfaces · October 2013 Nitric oxide (NO), a reactive free radical, has proven effective in eradicating bacterial biofilms with reduced risk of fostering antibacterial resistance. Herein, we evaluated the efficacy of NO-releasing silica nanoparticles against Gram-negative Pseudom ... Full text Cite

Nitric oxide-releasing silica nanoparticle-doped polyurethane electrospun fibers.

Journal Article ACS applied materials & interfaces · August 2013 Electrospun polyurethane fibers doped with nitric oxide (NO)-releasing silica particles are presented as novel macromolecular scaffolds with prolonged NO-release and high porosity. Fiber diameter (119-614 nm) and mechanical strength (1.7-34.5 MPa of modulu ... Full text Cite

O2-Protected diazeniumdiolate-modified silica nanoparticles for extended nitric oxide release from dental composites

Journal Article Biomaterials Science · May 1, 2013 O2-Protected N-diazeniumdiolate-based silanes were grafted onto mesoporous silica nanoparticles to yield a scaffold with an NO payload of 2.4 μmol NO per mg and NO release half-life of 23 d. Adhesion of Streptococcus mutans to dental restorative materials ... Full text Cite

Dual action antimicrobials: nitric oxide release from quaternary ammonium-functionalized silica nanoparticles.

Journal Article Biomacromolecules · October 2012 The synthesis of quaternary ammonium (QA)-functionalized silica nanoparticles with and without nitric oxide (NO) release capabilities is described. Glycidyltrialkylammonium chlorides of varied alkyl chain lengths (i.e., methyl, butyl, octyl, and dodecyl) w ... Full text Cite

Nitric oxide release: Part II. Therapeutic applications

Journal Article Chemical Society Reviews · April 30, 2012 A wide range of nitric oxide (NO)-releasing materials has emerged as potential therapeutics that exploit NO's vast biological roles. Macromolecular NO-releasing scaffolds are particularly promising due to their ability to store and deliver larger NO payloa ... Full text Cite

Fabrication of nitric oxide-releasing polyurethane glucose sensor membranes.

Journal Article Biosensors & bioelectronics · October 2011 Despite clear evidence that polymeric nitric oxide (NO) release coatings reduce the foreign body response (FBR) and may thus improve the analytical performance of in vivo continuous glucose monitoring devices when used as sensor membranes, the compatibilit ... Full text Cite

Influence of scaffold size on bactericidal activity of nitric oxide-releasing silica nanoparticles.

Journal Article ACS nano · September 2011 A reverse microemulsion synthesis was used to prepare amine-functionalized silica nanoparticles of three distinct sizes (i.e., 50, 100, and 200 nm) with similar amine content. The resulting hybrid nanoparticles, consisting of N-(6-aminohexyl)aminopropyltri ... Full text Cite

Nitric oxide-releasing silica nanoparticle inhibition of ovarian cancer cell growth.

Journal Article Molecular pharmaceutics · June 2010 Although the potent antitumor activity of nitric oxide (NO) supports its promise as an antineoplastic agent, effective and selective delivery and action on tumor and not normal cells remains a limiting factor. Nanoparticle-based delivery of NO has been con ... Full text Cite