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Polarization At Metal--Biomolecular Interfaces In Solution, Hendrik Heinz, Kshitij Jha, Jutta Luettmer-Strathmann, Barry Farmer, Rajesh Naik
Polarization At Metal--Biomolecular Interfaces In Solution, Hendrik Heinz, Kshitij Jha, Jutta Luettmer-Strathmann, Barry Farmer, Rajesh Naik
Jutta Luettmer-Strathmann
Metal surfaces in contact with water, surfactants and biopolymers experience attractive polarization owing to induced charges. This fundamental physical interaction complements stronger epitaxial and covalent surface interactions and remains difficult to measure experimentally. We present a first step to quantify polarization on even gold (Au) surfaces in contact with water and with aqueous solutions of peptides of different charge state (A3 and Flg-Na3) by molecular dynamics simulation in all-atomic resolution and a posteriori computation of the image potential. Attractive polarization scales with the magnitude of atomic charges and with the length of multi-poles in the aqueous phase such as the …
Synthesis And Characterization Of Bioresorbable In Situ Crosslinkable Ultra Low Molecular Weight Poly(Lactide) Macromer, Esmaiel Jabbari, Xuezhong He
Synthesis And Characterization Of Bioresorbable In Situ Crosslinkable Ultra Low Molecular Weight Poly(Lactide) Macromer, Esmaiel Jabbari, Xuezhong He
Esmaiel Jabbari
No abstract provided.
Electrospinning For Tissue Engineering Scaffolds, J. Lannutti, Darrell Reneker, T. Ma, D. Tomasko, D. Farson
Electrospinning For Tissue Engineering Scaffolds, J. Lannutti, Darrell Reneker, T. Ma, D. Tomasko, D. Farson
Darrell Hyson Reneker
Tissue engineering involves fabrication of three-dimensional scaffolds to support cellular in-growth and proliferation. The goal: generation of ‘neotissues’ that the body can adapt to carry out physiological function. To achieve this generation of scaffolds having tailored, biomimetic (across multiple scales) geometries has become important. The functional complexity of electrospun scaffolds provides significant advantages over other techniques; however, improvements are required before optimal utilization in vivo becomes routine. Cells on such surfaces are sensitive to topography. Electrospinning can be altered to influence either (1) the surface topography of the fibers themselves or (2) the larger topography of the ‘web’ of spun …
Changes In The Adhesive Properties Of Spider Aggregate Glue During The Evolution Of Cobwebs, Vasav Sahni, Todd Blackledge, Ali Dhinojwala
Changes In The Adhesive Properties Of Spider Aggregate Glue During The Evolution Of Cobwebs, Vasav Sahni, Todd Blackledge, Ali Dhinojwala
Ali Dhinojwala
We compare the prey capture glues produced by orb-weaving spiders (viscid glue) and their evolutionary descendents, the cobweb-weaving spiders (gumfoot glue). These glues are produced in homologous glands but exhibit contrasting structure, properties and response to changing humidity. Individual glue droplet stretching measurements indicate that the gumfoot glue behaves like a viscoelastic liquid in contrast to the viscid glue, which behaves like a viscoelastic solid. Moreover, the gumfoot glue is largely humidity-resistant - elasticity and adhesion are constant across variation in humidity and there is weak volume-dependence. Viscid glue, however, is highly humidity-sensitive. The glue expands an order of magnitude …