Materials Literature
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The crowded environments inside cells can have significant effects on the folding stability and other biophysical properties of proteins. In this study on how macromolecular crowding affects protein folding, we took a significant step toward realistically mimicking intracellular environments by using a mixture of two…
HdeA has been shown to prevent acid-induced aggregation of proteins. With a mass of only 9.7 kDa, HdeA is one of the smallest chaperones known. Unlike other molecular chaperones, which are typically complex, multimeric ATP-dependent machines, HdeA is known to undergo an acid-induced dimer to monomer transition and fun…
Abstract The massive size of the oil shale resource in the Western USA, particularly in the Green River Basin, has attracted numerous commercialization attempts from industry over the last 100 years. Although great sums of money have been invested and many professional careers have been devoted to the challenge, effor…
A strategy for the accurate determination of protein solution structures starting from X-ray data and a minimal set of NMR data is proposed and successfully applied to two complexes of calmodulin (CaM) with target peptides not previously described. Its implementation in the present case is based on the use of lanthani…
An interesting paper in this issue describes an experiment that is an optical analogue of the "quantum corral" on metal surfaces constructed and observed using scanning tunneling microscopy more than a decade ago. In this Perspective, the mechanism underlying the confinement and manipulation of light in metallic nanor…
In this letter, open complementary split ring resonators (OCSRRs) are introduced for the first time. Such resonators are the dual counterparts of the open split ring resonators (OSRRs), introduced in 2004 by some of the authors, and consist on a pair of concentric hooks etched on a metal layer in opposite orientation.…
Density functional theory (DFT) calculations were employed to explore the gas-sensing mechanisms of zinc oxide (ZnO) with surface reconstruction taken into consideration. Mix-terminated (101̅0) ZnO surfaces were examined. By simulating the adsorption process of various gases, i.e., H 2, NH 3, CO, and ethanol (C 2 H 5…
Tailored ad-hoc methods must be developed for successful identification of minute amounts of natural dyes on works of art using Surface-Enhanced Raman Spectroscopy (SERS). This article details two of these successful approaches using silver film over nanosphere (AgFON) substrates and silica gel coupled with citrate-re…
Polyanions are important sensing targets because of their wide variety of biological activities. We report a novel polyanion-selective fluorescence sensing system composed of a hybrid material of supramolecular hydrogel, enzymes, and aminoethyl-modified MCM41-type mesoporous silica particles (NH(2)-MCM41) encapsulatin…
The large-scale manufacture of organic electronics devices becomes more feasible if the molecular orientation and morphology of the semiconductor can be controlled. Here, we report on a previously unidentified crystal shape of terraced nanoscale "ribbons" in thin films of poly(2,5-bis(3-alkylthiophen-2-yl)thieno[3,2-b…
Self-assembly creates natural mineral, chemical, and biological structures of great complexity. Often, the same starting materials have the potential to form an infinite variety of distinct structures; information in a seed molecule can determine which form is grown as well as where and when. These phenomena can be ex…
A micrometer-sized oil droplet of 4-octylaniline containing 5 mol % of an amphiphilic catalyst exhibited a self-propelled motion, producing tiny oil droplets, in an aqueous dispersion of an amphiphilic precursor of 4-octylaniline. The tiny droplets on the surface of the self-propelled droplet were conveyed to the post…
Basics in Phase Morphologies of Multicomponent Polymer-Based Materials Phase Morphology Development in Polymer Blends References Phase Morphology Investigation: Microscopic Tools, Tips, and Selected Scanning Electron Photomicrographs Introduction Sample Preparation for Scanning Electron Micrography References Selected…
Zn 0.96 Mn 0.04 O/ZnO coaxial nanocables were prepared in two steps: ZnO nanowires were synthesized by standard thermal evaporation, followed by depositing Zn 0.96 Mn 0.04 onto the surface of prepared ZnO nanowires using an ultrahigh-vacuum radio frequency magnetron-sputtering system. X-ray diffraction and X-ray photo…
Three-dimensional network of branched fibers of conducting polypyrrole was synthesized by interfacial polymerization method in the presence of sulfonated β -cyclodextrin (Sβ CD) as the dopant. A high surface area of open-pore polypyrrole structure was obtained with the aid of Sβ CD, and the incorporation of Sβ CD unit…
Polar liquid crystalline phases are relevant for fluid liquid crystal phases observed in banana liquid crystals as well as for a class of polymeric liquid crystalline materials investigated recently. In this Brief Report we present the reversible dynamics for polar nematic liquid crystals with C_{infinityv} symmetry,…
We present a compact model of transport through a random distribution of interacting quantum dots embedded in a dielectric matrix. The model is based on a network of interconnected tunnel junctions sandwiched between two electrodes, resulting in a system of nonlinear differential equations which is numerically solved…
Real-time fluorescence spectra from photoactivated individual silver clusters on silver island film were obtained via inserting a transmission grating in the emission light path of an inverted microscope. The high throughput data collection ability allowed us to monitor photochemical dynamics of multiple silver cluste…
Fuel cells operated with hydrogen are more efficient than internal combustion engines, because the combustion in the internal combustion engine is less reversible than the electro-oxidation of hydrogen in the fuel cell. Hydrogen can be produced out of hydrocarbons, such as natural gas, or renewable resources at statio…
ZnO nanorod arrays with different structures were grown on Si substrates at different temperatures by using a chemical vapor transport process. The growth sites and population of ZnO nanorods were controlled by the primarily grown micropyramids. The density and size of these nanorods were greatly affected by the growt…