Materials Testing

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  Subject Areas on Research

  • 'Seeing' Strain in Soft Materials. 
  • 2015 HRS/EHRA/APHRS/SOLAECE expert consensus statement on optimal implantable cardioverter-defibrillator programming and testing. 
  • 2015 HRS/EHRA/APHRS/SOLAECE expert consensus statement on optimal implantable cardioverter-defibrillator programming and testing. 
  • 3D Printing of Highly Stretchable and Tough Hydrogels into Complex, Cellularized Structures. 
  • 3D biofabrication strategies for tissue engineering and regenerative medicine. 
  • A bioactive titanium foam scaffold for bone repair. 
  • A biomechanical comparison of suture constructs used for coracoclavicular fixation. 
  • A bioresponsive hydrogel tuned to chondrogenesis of human mesenchymal stem cells. 
  • A centrifugal fluidic immunoassay for ocular diagnostics with an enzymatically hydrolyzed fluorogenic substrate. 
  • A metamaterial absorber for the terahertz regime: design, fabrication and characterization. 
  • A micromachine high frequency ultrasound scanner using photolithographic fabrication. 
  • A novel array chip to monitor in situ composite degradation using electrochemical impedance spectroscopy. 
  • Accelerated wound healing by injectable microporous gel scaffolds assembled from annealed building blocks. 
  • Agarose gel stiffness determines rate of DRG neurite extension in 3D cultures. 
  • All-inside meniscal repair devices compared with their matched inside-out vertical mattress suture repair: introducing 10,000 and 100,000 loading cycles. 
  • Amino acid-based Poly(ester urea) copolymer films for hernia-repair applications. 
  • An adaptable mesocosm platform for performing integrated assessments of nanomaterial risk in complex environmental systems. 
  • An immediate access dialysis graft designed to prevent needle-related complications: Results from the initial pre-clinical studies. 
  • Analysis of biomedical polymer surfaces: polyurethanes and plasma-deposited thin films. 
  • Anterior cruciate ligament fixation: is radial force a predictor of the pullout strength of soft-tissue interference devices? 
  • Antibacterial activity of fullerene water suspensions (nC60) is not due to ROS-mediated damage. 
  • Application of a novel suture anchor to abdominal wall closure. 
  • Application of hydrogels in heart valve tissue engineering. 
  • Application of magnetic resonance microscopy to tissue engineering: a polylactide model. 
  • Autologous endothelial progenitor cell-seeding technology and biocompatibility testing for cardiovascular devices in large animal model. 
  • Baseline predictors of A1C reduction in adults using sensor-augmented pump therapy or multiple daily injection therapy: the STAR 3 experience. 
  • Bearing area: a new indication for suture anchor pullout strength? 
  • Biocompatibility studies of functionalized regioregular poly(3-hexylthiophene) layers for sensing applications. 
  • Biomechanical Comparison of Intramedullary Screw Versus Low-Profile Plate Fixation of a Jones Fracture. 
  • Biomechanical comparison of 4 different lateral plate constructs for distal fibula fractures. 
  • Biomimetic hydrogels with pro-angiogenic properties. 
  • Broadband gradient index microwave quasi-optical elements based on non-resonant metamaterials. 
  • Broadband optical antireflection enhancement by integrating antireflective nanoislands with silicon nanoconical-frustum arrays. 
  • CMOS-based carbon nanotube pass-transistor logic integrated circuits. 
  • Cell-Compatible, Site-Specific Covalent Modification of Hydrogel Scaffolds Enables User-Defined Control over Cell-Material Interactions. 
  • Cellular response to phase-separated blends of tyrosine-derived polycarbonates. 
  • Characterization of perfused and sectioned liver tissue in a full indentation cycle using a visco-hyperelastic model. 
  • Chondrogenic differentiation of adipose-derived adult stem cells in agarose, alginate, and gelatin scaffolds. 
  • Comment on "compression screw fixation of the syndesmosis". Author reply. 
  • Comparison of the abilities of ambient and manufactured nanoparticles to induce cellular toxicity according to an oxidative stress paradigm. 
  • Compression forces of internal and external ankle fixation devices with simulated bone resorption. 
  • Compression screw fixation of the syndesmosis. 
  • Compressive cyclic ratcheting and fatigue of synthetic, soft biomedical polymers in solution. 
  • Computational studies of small carbon and iron-carbon systems relevant to carbon nanotube growth. 
  • Concomitant control of mechanical properties and degradation in resorbable elastomer-like materials using stereochemistry and stoichiometry for soft tissue engineering. 
  • Control of a biomolecular motor-powered nanodevice with an engineered chemical switch. 
  • Covalently immobilized gradients of bFGF on hydrogel scaffolds for directed cell migration. 
  • Crosslinked hyaluronic acid hydrogels: a strategy to functionalize and pattern. 
  • Cytoprotection of PEG-modified adult porcine pancreatic islets for improved xenotransplantation. 
  • Cytotoxicity and thermomechanical behavior of biomedical shape-memory polymer networks post-sterilization. 
  • DNA delivery from hyaluronic acid-collagen hydrogels via a substrate-mediated approach. 
  • Deep UV nano-microstructuring of substrates for surface plasmon resonance imaging. 
  • Deformation and fatigue of tough 3D printed elastomer scaffolds processed by fused deposition modeling and continuous liquid interface production. 
  • Detailed analysis of polymer response to delivery balloon expansion of drug-eluting stents versus bare metal stents. 
  • Development and characterization of a vitreous mimicking material for radiation force imaging. 
  • Development of a novel surface modification for improved bonding to zirconia. 
  • Development of bioactive photocrosslinkable fibrous hydrogels. 
  • Digital switching of local arginine density in a genetically encoded self-assembled polypeptide nanoparticle controls cellular uptake. 
  • Do Surface Porosity and Pore Size Influence Mechanical Properties and Cellular Response to PEEK? 
  • Do inner shells of double-walled carbon nanotubes fluoresce? 
  • Doping and phonon renormalization in carbon nanotubes. 
  • Dual-band planar electric metamaterial in the terahertz regime. 
  • Dynamic fatigue and strength characterization of three ceramic materials. 
  • Dynamic fatigue behavior of dental porcelain modified by surface deposition of a YSZ thin film. 
  • Dynamic infrared linear dichroism study of the temperature-dependent, viscoelastic behavior of a poly(ester urethane). 
  • Dynamic surface deformation of silicone elastomers for management of marine biofouling: laboratory and field studies using pneumatic actuation. 
  • Effect of Chemical and Physical Properties on the In Vitro Degradation of 3D Printed High Resolution Poly(propylene fumarate) Scaffolds. 
  • Effect of graphite concentration on shear-wave speed in gelatin-based tissue-mimicking phantoms. 
  • Effect of lithotripter focal width on stone comminution in shock wave lithotripsy. 
  • Effect of pigmentation on the mechanical and polymerization characteristics of bone cement. 
  • Effect of poly(ethylene glycol) diacrylate concentration on network properties and in vivo response of poly(β-amino ester) networks. 
  • Effect of porous orthopaedic implant material and structure on load sharing with simulated bone ingrowth: A finite element analysis comparing titanium and PEEK. 
  • Effect of starvation on the performance and re-acclimation of biotrickling filters for air pollution control. 
  • Effect of streptavidin-biotin on endothelial vasoregulation and leukocyte adhesion. 
  • Effect of the conformation and orientation of adsorbed fibronectin on endothelial cell spreading and the strength of adhesion. 
  • Effects of epidermal growth factor on fibroblast migration through biomimetic hydrogels. 
  • Elastomeric polyamide biomaterials with stereochemically tuneable mechanical properties and shape memory. 
  • Electrical stimulation alters protein adsorption and nerve cell interactions with electrically conducting biomaterials. 
  • Endothelialization of microporous YIGSR/PEG-modified polyurethaneurea. 
  • Engineered skeletal muscle tissue networks with controllable architecture. 
  • Engineering cell-material interfaces for long-term expansion of human pluripotent stem cells. 
  • Engineering the tissue which encapsulates subcutaneous implants. II. Plasma-tissue exchange properties. 
  • Engineering the tissue which encapsulates subcutaneous implants. III. Effective tissue response times. 
  • Evaluation of a preprimed microporous hollow-fiber membrane for rapid response neonatal extracorporeal membrane oxygenation. 
  • Evaluation of biaxial mechanical properties of soft tubes and arteries using sonometry. 
  • Evaluation of late outgrowth endothelial progenitor cell and umbilical vein endothelial cell responses to thromboresistant collagen-mimetic hydrogels. 
  • Evaluation of poly(L-lactic acid) as a material for intravascular polymeric stents. 
  • Evolution of load transfer between hydroxyapatite and collagen during creep deformation of bone. 
  • Expanded polytetrafluoroethylene membrane alters tissue response to implanted Ahmed glaucoma valve. 
  • Extracellular-matrix-based and Arg-Gly-Asp-modified photopolymerizing hydrogels for cartilage tissue engineering. 
  • Fabrication of combinatorial polymer scaffold libraries. 
  • Fabrication of gold nanowires by electric-field-induced scanning probe lithography and in situ chemical development. 
  • Fabrication of high quality carbon nanotubes with a simple ethanol-assisted arc discharge process. 
  • Fabrication of small diameter few-walled carbon nanotubes with enhanced field emission property. 
  • Finite element analysis of the current-density and electric field generated by metal microelectrodes. 
  • Finite element modeling of impulsive excitation and shear wave propagation in an incompressible, transversely isotropic medium. 
  • Flexible asymmetric supercapacitors with high energy and high power density in aqueous electrolytes. 
  • Founder's Award, Society for Biomaterials. Sixth World Biomaterials Congress 2000, Kamuela, HI,May 15-20, 2000. Really smart bioconjugates of smart polymers and receptor proteins. 
  • Fracture toughness improvements of dental ceramic through use of yttria-stabilized zirconia (YSZ) thin-film coatings. 
  • Functionalized few-walled carbon nanotubes for mechanical reinforcement of polymeric composites. 
  • Functionalized graphene sheets for polymer nanocomposites. 
  • Gene delivery through cell culture substrate adsorbed DNA complexes. 
  • Gold nanocages: bioconjugation and their potential use as optical imaging contrast agents. 
  • Gold nanoshell bioconjugates for molecular imaging in living cells. 
  • Hemocompatibility-Related Outcomes in the MOMENTUM 3 Trial at 6 Months: A Randomized Controlled Study of a Fully Magnetically Levitated Pump in Advanced Heart Failure. 
  • High purity isolation and quantification of semiconducting carbon nanotubes via column chromatography. 
  • Highly-compliant, microcable neuroelectrodes fabricated from thin-film gold and PDMS. 
  • Identification of material properties of orthotropic elastic cylinders immersed in fluid using vibroacoustic techniques. 
  • Imaging arrays with improved transmit power capability. 
  • Imaging characteristics of bone graft materials. 
  • Impact of surface porosity and topography on the mechanical behavior of high strength biomedical polymers. 
  • Improving endothelial cell adhesion to vascular graft surfaces: clinical need and strategies. 
  • In vitro characterization of vascular endothelial growth factor and dexamethasone releasing hydrogels for implantable probe coatings. 
  • In vitro model of glial scarring around neuroelectrodes chronically implanted in the CNS. 
  • In vivo assessment of an absorbable and nonabsorbable knotless barbed suture for laparoscopic single-layer enterotomy closure: a clinical and biomechanical comparison against nonbarbed suture. 
  • In vivo cytokine-associated responses to biomaterials. 
  • In vivo evaluations of a new thromboresistant polyurethane for artificial heart blood pumps. 
  • Increasing the maximum achievable strain of a covalent polymer gel through the addition of mechanically invisible cross-links. 
  • Inhibition of implant-associated infections via nitric oxide release. 
  • Inkless microcontact printing on SAMs of Boc- and TBS-protected thiols. 
  • Label-free measurement of microbicidal gel thickness using low-coherence interferometry. 
  • Lipid-based microtubular drug delivery vehicles. 
  • Local deformation behavior of surface porous polyether-ether-ketone. 
  • Long- and short-term effects of biological hydrogels on capsule microvascular density around implants in rats. 
  • Long-term microtensile bond strength of surface modified zirconia. 
  • Long-term toughness of photopolymerizable (meth)acrylate networks in aqueous environments. 
  • Management of the Implant With Taper Corrosion: What to Change and What to Change It to? 
  • Materials for multifunctional balloon catheters with capabilities in cardiac electrophysiological mapping and ablation therapy. 
  • Maximizing phenotype constraint and extracellular matrix production in primary human chondrocytes using arginine-glycine-aspartate concentration gradient hydrogels. 
  • Mechanical and cytotoxicity testing of acrylic bone cement embedded with microencapsulated 2-octyl cyanoacrylate. 
  • Mechanical properties of a dental ceramic coated by RF magnetron sputtering. 
  • Mechanical property studies of human gallstones. 
  • Mechanically interlocked calix[4]arene dimers display reversible bond breakage under force. 
  • Microdroplet dissolution into a second-phase solvent using a micropipet technique: test of the Epstein-Plesset model for an aniline-water system. 
  • Microencapsulation of 2-octylcyanoacrylate tissue adhesive for self-healing acrylic bone cement. 
  • Microleakage of IRM used to restore endodontic access preparations. 
  • Mineralized gelatin methacrylate-based matrices induce osteogenic differentiation of human induced pluripotent stem cells. 
  • Molecular and Materials Engineering for Delivery of Peptide Drugs to Treat Type 2 Diabetes. 
  • Multicomponent patterning of indium tin oxide. 
  • Multilayer microfluidic PEGDA hydrogels. 
  • Mylar and Teflon-AF as cell culture substrates for studying endothelial cell adhesion. 
  • N95 reprocessing by low temperature sterilization with 59% vaporized hydrogen peroxide during the 2020 COVID-19 pandemic. 
  • Nitroxide conjugate of a thermally responsive elastin-like polypeptide for noninvasive thermometry. 
  • Novel strategy for diameter-selective separation and functionalization of single-wall carbon nanotubes. 
  • Nucleic acid scavenging microfiber mesh inhibits trauma-induced inflammation and thrombosis. 
  • Observation of plasmon propagation, redirection, and fan-out in silver nanowires. 
  • Ocular biocompatibility testing of intraocular lenses: a 1 year study in pseudophakic rabbit eyes. 
  • Oligo(trimethylene carbonate)-poly(ethylene glycol)-oligo(trimethylene carbonate) triblock-based hydrogels for cartilage tissue engineering. 
  • One-pot synthesis of CdTe nanocrystals and shape control of luminescent CdTe-cystine nanocomposites. 
  • Open-source micro-tensile testers via additive manufacturing for the mechanical characterization of thin films and papers. 
  • Patterning cells in highly deformable microstructures: effect of plastic deformation of substrate on cellular phenotype and gene expression. 
  • Peptide interfacial biomaterials improve endothelial cell adhesion and spreading on synthetic polyglycolic acid materials. 
  • Peripheral nerve repair with collagen conduits. 
  • Permanent protection of PLG scaffold transplanted allogeneic islet grafts in diabetic mice treated with ECDI-fixed donor splenocyte infusions. 
  • Phonon populations and electrical power dissipation in carbon nanotube transistors. 
  • Photolithographic patterning of polyethylene glycol hydrogels. 
  • Photopolymerizable Resins for 3D-Printing Solid-Cured Tissue Engineered Implants. 
  • Planar wallpaper group metamaterials for novel terahertz applications. 
  • Poly(propylene fumarate)-based materials: Synthesis, functionalization, properties, device fabrication and biomedical applications. 
  • Polyethylene wear characteristics in vivo and in a knee stimulator. 
  • Polymer hydrogels: Chaperoning vaccines. 
  • Porous PEEK improves the bone-implant interface compared to plasma-sprayed titanium coating on PEEK. 
  • Porous biocompatible three-dimensional scaffolds of cellulose microfiber/gelatin composites for cell culture. 
  • Porous polyethylene implant for cranioplasty and skull base reconstruction. 
  • Porous, Dexamethasone-loaded polyurethane coatings extend performance window of implantable glucose sensors in vivo. 
  • Primary human chondrocyte extracellular matrix formation and phenotype maintenance using RGD-derivatized PEGDM hydrogels possessing a continuous Young's modulus gradient. 
  • Protease-activated quantum dot probes. 
  • Protein array method for assessing in vitro biomaterial-induced cytokine expression. 
  • Proteolytically degradable hydrogels with a fluorogenic substrate for studies of cellular proteolytic activity and migration. 
  • Purification of semiconducting carbon nanotubes. 
  • Quadriceps tendon rupture: a biomechanical comparison of transosseous equivalent double-row suture anchor versus transosseous tunnel repair. 
  • Quantification of in vitro endothelial cell adhesion to vascular graft material. 
  • Quantification of the tip movement of lithotripsy flexible pneumatic probes. 
  • Quasi-ohmic single molecule charge transport through highly conjugated meso-to-meso ethyne-bridged porphyrin wires. 
  • Rapid self-healing hydrogels. 
  • Readily available tissue-engineered vascular grafts. 
  • Regulation of endothelial cell activation and angiogenesis by injectable peptide nanofibers. 
  • Resorbable, amino acid-based poly(ester urea)s crosslinked with osteogenic growth peptide with enhanced mechanical properties and bioactivity. 
  • Response of monocytes exposed to phagocytosable particles and discs of comparable surface roughness. 
  • Retrograde Stainless Steel Flexible Nails Have Superior Resistance to Bending in Distal Third Femoral Shaft Fractures. 
  • Right bipyramids of silver: a new shape derived from single twinned seeds. 
  • Room temperature purification of few-walled carbon nanotubes with high yield. 
  • Runx2/Cbfa1-genetically engineered skeletal myoblasts mineralize collagen scaffolds in vitro. 
  • Scaling behavior of nanopatterned polymer brushes. 
  • Screening of hyaluronic acid-poly(ethylene glycol) composite hydrogels to support intervertebral disc cell biosynthesis using artificial neural network analysis. 
  • Second-generation proximally coated titanium femoral component: minimum 7-year results. 
  • Self-cleaning of superhydrophobic surfaces by self-propelled jumping condensate. 
  • Semi-degradable poly(β-amino ester) networks with temporally controlled enhancement of mechanical properties. 
  • Shape and size control of ZnO nanostructures via a simple solution route. 
  • Shape matters: plasmonic nanoparticle shape enhances interaction with dielectric substrate. 
  • Side-to-side sutureless vascular anastomosis with magnets. 
  • Silver nanowire interactions with primary human alveolar type-II epithelial cell secretions: contrasting bioreactivity with human alveolar type-I and type-II epithelial cells. 
  • Single-sensor multispeaker listening with acoustic metamaterials. 
  • Size-controlled electrochemical synthesis and properties of SnO2 nanotubes. 
  • Size-dependence of surface plasmon resonance and oxidation for Pd nanocubes synthesized via a seed etching process. 
  • Smooth muscle cell growth in photopolymerized hydrogels with cell adhesive and proteolytically degradable domains: synthetic ECM analogs for tissue engineering. 
  • Solvent properties of hydrazine in the preparation of metal chalcogenide bulk materials and films. 
  • Sporty compression socks: to wear or not to wear? 
  • Squeezing flows of vaginal gel formulations relevant to microbicide drug delivery. 
  • Stiffness characterization of anisotropic trabecular meshwork. 
  • Structural and mechanical study of a self-assembling protein nanotube. 
  • Structure and thermomechanical behavior of NiTiPt shape memory alloy wires. 
  • Supramolecular nanomimetics: replication of micelles, viruses, and other naturally occurring nanoscale objects. 
  • Surface fluorination of zirconia: adhesive bond strength comparison to commercial primers. 
  • Surface modification for enhanced silanation of zirconia ceramics. 
  • Surface-stress-induced phase transformation in metal nanowires. 
  • Suture Breakage Warning System for Robotic Surgery. 
  • Switchable friction of stimulus-responsive hydrogels. 
  • Synthesis and electrical characterization of silver nanobeams. 
  • Synthesis and optical properties of silver nanobars and nanorice. 
  • Synthesis of high-density, large-diameter, and aligned single-walled carbon nanotubes by multiple-cycle growth methods. 
  • Synthesis of oxidation-resistant cupronickel nanowires for transparent conducting nanowire networks. 
  • Synthesis of uniform double-walled carbon nanotubes using iron disilicide as catalyst. 
  • Synthetic bone mimetic matrix-mediated in situ bone tissue formation through host cell recruitment. 
  • Synthetic materials in the study of cell response to substrate rigidity. 
  • Systematic optimization of an engineered hydrogel allows for selective control of human neural stem cell survival and differentiation after transplantation in the stroke brain. 
  • Temperature-sensitive polymer-nanoshell composites for photothermally modulated drug delivery 
  • The accuracy of a near-infrared spectroscopy cerebral oximetry device and its potential value for estimating jugular venous oxygen saturation. 
  • The biocompatibility of titanium cardiovascular devices seeded with autologous blood-derived endothelial progenitor cells: EPC-seeded antithrombotic Ti implants. 
  • The dependence of MG63 osteoblast responses to (meth)acrylate-based networks on chemical structure and stiffness. 
  • The effect of nanowire length and diameter on the properties of transparent, conducting nanowire films. 
  • The effect of surface topography and porosity on the tensile fatigue of 3D printed Ti-6Al-4V fabricated by selective laser melting. 
  • The materials engineering of temperature-sensitive liposomes. 
  • The polarity and magnitude of ambient charge influences three-dimensional neurite extension from DRGs. 
  • The role of imaging and in situ biomechanical testing in assessing pedicle screw pull-out strength. 
  • The role of thickness transitions in convective assembly. 
  • The use of highly cross-linked polyethylene in total knee arthroplasty. 
  • Thermomechanics of the shape memory effect in polymers for biomedical applications. 
  • Time-resolved investigation of bright visible wavelength luminescence from sulfur-doped ZnO nanowires and micropowders. 
  • Two-stage sampling in pharmaceutical applications. 
  • Unconstrained recovery characterization of shape-memory polymer networks for cardiovascular applications. 
  • Using channel-specific statistical models to detect reverberation in cochlear implant stimuli. 
  • Vibrational Properties of Metastable Polymorph Structures by Machine Learning. 
  • X-ray imaging optimization of 3D tissue engineering scaffolds via combinatorial fabrication methods. 
  • Zirconia-parylene multilayer thin films for enhanced fracture resistance of dental ceramics. 
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  Keywords of People

  • Craig, Stephen L, William T. Miller Distinguished Professor of Chemistry, Duke University Energy Initiative
  • Gall, Ken, Professor in the Department of Mechanical Engineering and Materials Science, Duke Innovation & Entrepreneurship
  • Jokerst, Nan Marie, J. A. Jones Distinguished Professor of Electrical and Computer Engineering, Duke University Energy Initiative
  • Katz, David F., Nello L. Teer, Jr. Distinguished Professor of Biomedical Engineering, in the Edmund T. Pratt, Jr. School of Engineering, Biomedical Engineering
  • Milano, Carmelo Alessio, Professor of Surgery, Surgery, Cardiovascular and Thoracic Surgery
  • Mitzi, David, Simon Family Distinguished Professor, Duke University Energy Initiative
  • Preminger, Glenn Michael, James F. Glenn, M.D. Distinguished Professor of Urology, Surgery
  • Toth, Cynthia Ann, Joseph A.C. Wadsworth Distinguished Professor of Ophthalmology, Biomedical Engineering