Browsing by Subject "Surface Properties"
Now showing items 1-16 of 16
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Characterization of topographical effects on macrophage behavior in a foreign body response model.
(Biomaterials, 2010-05)Current strategies to limit macrophage adhesion, fusion and fibrous capsule formation in the foreign body response have focused on modulating material surface properties. We hypothesize that topography close to biological ... -
Deposition of silver nanoparticles in geochemically heterogeneous porous media: predicting affinity from surface composition analysis.
(Environ Sci Technol, 2011-06-15)The transport of uncoated silver nanoparticles (AgNPs) in a porous medium composed of silica glass beads modified with a partial coverage of iron oxide (hematite) was studied and compared to that in a porous medium composed ... -
Diode-based transmission detector for IMRT delivery monitoring: a validation study.
(Journal of applied clinical medical physics, 2016-09-08)The purpose of this work was to evaluate the potential of a new transmission detector for real-time quality assurance of dynamic-MLC-based radiotherapy. The accuracy of detecting dose variation and static/dynamic MLC position ... -
Gold nanoparticles on polarizable surfaces as Raman scattering antennas.
(ACS Nano, 2010-11-23)Surface plasmons supported by metal nanoparticles are perturbed by coupling to a surface that is polarizable. Coupling results in enhancement of near fields and may increase the scattering efficiency of radiative modes. ... -
Heterogeneities in fullerene nanoparticle aggregates affecting reactivity, bioactivity, and transport.
(ACS Nano, 2010-09-28)Properties of nanomaterial suspensions are typically summarized by average values for the purposes of characterizing these materials and interpreting experimental results. We show in this work that the heterogeneity in aqueous ... -
Impacts of shale gas wastewater disposal on water quality in western Pennsylvania.
(Environ Sci Technol, 2013-10-15)The safe disposal of liquid wastes associated with oil and gas production in the United States is a major challenge given their large volumes and typically high levels of contaminants. In Pennsylvania, oil and gas wastewater ... -
Inkless microcontact printing on SAMs of Boc- and TBS-protected thiols.
(Nano Lett, 2010-01)We report a new inkless catalytic muCP technique that achieves accurate, fast, and complete pattern reproduction on SAMs of Boc- and TBS-protected thiols immobilized on gold using a polyurethane-acrylate stamp functionalized ... -
Interspecific scaling patterns of talar articular surfaces within primates and their closest living relatives.
(Journal of anatomy, 2014-02)The articular facets of interosseous joints must transmit forces while maintaining relatively low stresses. To prevent overloading, joints that transmit higher forces should therefore have larger facet areas. The relative ... -
Loss of cartilage structure, stiffness, and frictional properties in mice lacking PRG4.
(Arthritis Rheum, 2010-06)OBJECTIVE: To assess the role of the glycoprotein PRG4 in joint lubrication and chondroprotection by measuring friction, stiffness, surface topography, and subsurface histology of the hip joints of Prg4(-/-) and wild-type ... -
Metallic Nanoislands on Graphene as Highly Sensitive Transducers of Mechanical, Biological, and Optical Signals.
(Nano Lett, 2016-02-10)This article describes an effect based on the wetting transparency of graphene; the morphology of a metallic film (≤20 nm) when deposited on graphene by evaporation depends strongly on the identity of the substrate supporting ... -
Nanotopography-induced changes in focal adhesions, cytoskeletal organization, and mechanical properties of human mesenchymal stem cells.
(Biomaterials, 2010-02)The growth of stem cells can be modulated by physical factors such as extracellular matrix nanotopography. We hypothesize that nanotopography modulates cell behavior by changing the integrin clustering and focal adhesion ... -
Peptide interfacial biomaterials improve endothelial cell adhesion and spreading on synthetic polyglycolic acid materials.
(Ann Biomed Eng, 2010-06)Resorbable scaffolds such as polyglycolic acid (PGA) are employed in a number of clinical and tissue engineering applications owing to their desirable property of allowing remodeling to form native tissue over time. However, ... -
Smooth operator: The effects of different 3D mesh retriangulation protocols on the computation of Dirichlet normal energy.
(American journal of physical anthropology, 2017-05)Dirichlet normal energy (DNE) is a metric of surface topography that has been used to evaluate the relationship between the surface complexity of primate cheek teeth and dietary categories. This study examines the effects ... -
Subatomic deformation driven by vertical piezoelectricity from CdS ultrathin films.
(Sci Adv, 2018-02-01)Driven by the development of high-performance piezoelectric materials, actuators become an important tool for positioning objects with high accuracy down to nanometer scale, and have been used for a wide variety of equipment, ... -
The effect of nanowire length and diameter on the properties of transparent, conducting nanowire films.
(Nanoscale, 2012-03-21)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 ... -
The effect of nitric oxide surface flux on the foreign body response to subcutaneous implants.
(Biomaterials, 2012-09)Although the release of nitric oxide (NO) from biomaterials has been shown to reduce the foreign body response (FBR), the optimal NO release kinetics and doses remain unknown. Herein, polyurethane-coated wire substrates ...
