Protein deposition as amyloid fibrils underlies many debilitating human disorders. The complexity and size of disease-related polypeptides, however, often hinders a detailed rational approach to study effects that contribute to the process of amyloid formation. We report here a simplified peptide sequence successfully designed de novo to fold into a coiled-coil conformation under ambient condit...

5 The kinetics of light-driven oxygen evolution at polycrystalline α-Fe2O3 layers prepared by aerosolassisted chemical vapour deposition has been studied using intensity modulated photocurrent spectroscopy (IMPS). Analysis of the frequency-dependent IMPS response gives information about the competition between the 4-electron oxidation of water by photogenerated holes and losses due to electron-...

A paramount role of surface structure and composition on the kinetics of electrocatalytic reactions has been realized with the establishment of electrocatalysis as a science. Consequently, a variation in the surface structure, and a modification of surface composition is expected to result in a considerable alternation of the electrocatalytic properties of electrodes. Reliable data on the role ...

The deposition of a prototypical phosphonic acid from an ethanol solution onto indium-tin oxide is studied using XPS to assess the chemisorption kinetics and the purity of the film deposited, and UPS is employed to determine the electronic structure changes induced by the modifier. Room temperature (r.t.) vs. 75 °C depositions are compared, as well as the effect of using air plasma (AP) pretrea...

Quartz crystal microbalance with dissipation monitoring (QCM-D) has been employed to study the assembly and recrystallization kinetics of isolated SbpA bacterial surface proteins onto silicon dioxide substrates of different surface wettability. Surface modification by UV/ozone oxidation or by vapor deposition of 1H,1H,2H,2H-perfluorododecyltrichlorosilane yielded hydrophilic or hydrophobic samp...

Particle size dictates where aerosolized pathogens deposit in the respiratory tract, thereafter the pathogens potential to cause disease is influenced by tissue tropism, clearance kinetics and the host immunological response. This interplay brings pathogens into contact with a range of tissues spanning the respiratory tract and associated anatomical structures. In animal models, differential de...

We identify and control the photoreaction paths of self-assembled monolayers (SAMs) of thiolate-linked anthracene phenylethynyl molecules on Au substrate surfaces, and study the effects of nanoscale morphology of substrates on regioselective photoreactions. Two types of morphologies, atomically flat and curved, are produced on Au surfaces by controlling substrate structure and metal deposition....

High Density Plasma Chemical Vapor Deposition (HDPCVD), a variant of Plasma-Enhanced Chemical Vapor Deposition (PECVD), has demonstrated the capability of growing SiO2 layers with novel electronic properties. In particular, the structure of Si nanoparticles (NPs), in Si-rich HDPCVD SiO2 layers has been correlated with the performance of metal oxide semiconductor (MOS) memory devices [1]. There ...

Chemical oxygen-iodine lasers (COIL) are attractive for diverse industrial applications because they are capable of high efficiency, high power operation, and because the 1.315 mm wavelength can be transmitted through fiber optics and couples efficiently with most metals. Conventional COILs are pumped with O2s Dd that is generated by reaction of Cl2 in a basic H2O2 solution. Current trends in p...

In this study, we investigated the deposition kinetics of polyvinylidene fluoride copolymerized with trifluoroethylene (P(VDF-TrFE)) particles on stainless steel substrates during the electrophoretic deposition (EPD) process. The effect of applied voltage and deposition time on the structure and ferroelectric property of the P(VDF-TrFE) films was studied in detail. A method of repeated EPD and ...