Materials Literature
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A tall barrier superlattice structure based on mercury cadmium telluride material system is proposed that can achieve a large effective thermoelectric figure of merit (ZTmax∼3) at cryogenic temperatures. Calculations based on the Boltzmann transport equation taking into account the quantum mechanical electron transmis…
We have reported the formation of ZnO nanoparticles and α-AgI nanocrystals embedded in the glass matrix in the 0.70AgI–0.15Ag2O–0.15[xZnO–(1−x)MoO3], x=0.05–0.30, glass nanocomposites from x-ray diffraction, field emission scanning electron microscopy, and high resolution transmission electron microscopy patterns. Fou…
Abstract Nanosize CaSO 4 and Ca 3 (PO 4 ) 2 fillers were synthesized with an in situ deposition technique, and their sizes were confirmed by X‐ray diffraction. CaSO 4 was prepared in 12‐ and 22‐nm sizes, and Ca 3 (PO 4 ) 2 was prepared in 13‐ and 24‐nm sizes. Experimental variables, such as torque, shear viscosity, sh…
ZnO ∕ CoZnO core-shell nanowires have been synthesized by depositing an epitaxial layer of CoxZn1−xO (x=0.05−0.25) onto single-crystalline ZnO nanowires via pulsed-laser deposition. Detailed material analysis confirmed the core-shell structure and revealed a homogeneous distribution of Co atoms in the ZnO lattice. Fie…
Abstract During dynamic vulcanization of polypropylene (PP)/ethylene–propylene–diene terpolymer (EPDM) blends with dicumyl peroxide/triallyl cyanurate, there is a possibility of the generation of in situ graft links at the interface. Three potential compatibilizers (PP‐grafted EPDM, styrene–ethylenebutylene–styrene, a…
Abstract The influences of organically modified montmorillonite (MMT) on morphology, crystallization behaviors of maleic anhydride grafted polyethylene (mPE) are investigated by using wide angle X‐ray diffraction (WAXD), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), polarized optical…
Abstract Silk and wool are well‐known protein‐based fibers. Their environmental stability, biocompatibility, and unique mechanical properties provide an important basis for using these natural proteins in biomedical applications. To use them as biomaterials in the form of fibers, films, or membranes, it is necessary t…
Abstract Micromachining of chemical reactors enables the manufacture of microchannel reactors with unsually large surface‐to‐volume ratios. This can strongly affect the coupling between heterogeneous (wall) reactions and homogeneous (gas‐phase) reactions, ultimately leading to a complete quenching of homogeneous react…
Abstract We developed a conductive epoxy/amine system containing polyaniline doped with dodecylbenzenesulfonic acid (PAni.DBSA). The curing behaviors of diglycidyl ether of bisphenol A with triethylenetetramine (TETA), PAni.DBSA, and both amine compounds at different concentrations were investigated by differential sc…
Minimalist theories of complex systems are broadly of two kinds: mean field and axiomatic. So far, all theories of complex properties absent from simple systems and intrinsic to glasses are axiomatic. Stretched Exponential Relaxation (SER) is the prototypical complex temporal property of glasses, discovered by Kohlrau…
The conduction type of P doped ZnO thin films using Zn3P2 dopant source can be controlled by adjusting the oxygen partial pressure by means of radio-frequency sputtering. Under an optimal oxygen partial pressure of 5%, p-type ZnO thin films were obtained with a hole concentration of 1.93×1016–3.84×1019cm−3. Under a gr…
The significance of gate electrode processes to the transfer characteristics of electrochemical transistors is demonstrated using a device based on a polyacetylene ionomer. Two regimes of operation are identified. The first involves a conventional redox process where two Faradaic processes balance: oxidative doping of…
Abstract In this work the maximum entropy method (MEM) is applied, for the first time, to angle‐resolved X‐ray photoelectron spectroscopy (ARXPS) data from oxy‐hydroxide films on iron surfaces. This nondestructively derives information on the in‐depth distribution of the composition and chemical state. An MEM algorith…
The problem of the design of artificial magnetic resonators for isotropic metamaterials is addressed. The internal symmetries that ensure an isotropic behavior of such resonators are analyzed and some specific designs based on the proper arrangement of modified split ring resonators are proposed. These proposals are v…
Pores for effect: Spherical, mesoporous silica particles with pore sizes ranging from 28–127 Å and particle diameters of 5–10 μm were used to achieve size-based separations of two proteins (see figure). This separation has been visualized using confocal scanning laser microscopy and confirmed with flow microcalorimetr…
Abstract The effects of applying titanate (TYZOR® TPT) and silane (DYNASYLAN VTMO) coupling agents to wet ground muscovite mica in nylon‐6 composites are described. Nylon‐6 composites of 5–40 wt % filler loadings were compounded using an APV Baker twin‐screw extruder. Mica (25 wt %) brought about an increase in the Yo…
Abstract A soluble block copolyimide (Bco‐PI) was prepared by direct one‐pot polycondensation of 2,2‐bis‐(3‐amino‐4‐hydroxyphenyl)hexafluoropropane, 2,2‐bis[4‐(4‐aminophenoxy)phenyl]hexafluoropropane, and cyclohexane‐tetracarboxylic dianhydride in the presence of γ‐valerolactone and a pyridine catalyst system using γ‐…
Photoluminescence of ZnO single crystal nanotubes grown on sapphire substrate by metal organic chemical vapor deposition has been studied as a function of applied hydrostatic pressure using the diamond-anvil-cell technique. The photoluminescence spectra of the ZnO nanotubes at atmospheric pressure are dominated by str…
Long-range-ordered CdTe nanodot arrays with controlled size and density were grown on GaAs substrates by using molecular-beam epitaxy with ultrathin nanoporous alumina masks. The CdTe∕GaAs nanodot arrays were grown as replicas of the self-assembled porous alumina masks in spite of the large lattice mismatch between Ga…
Significant photoinduced currents have been explored in carbon nanotube/metal heterojunctions, i.e., heterodimension junctions containing macrolong carbon nanotubes (CNTs). The experimental measurements clearly show that the net transport direction of the photoexcited electrons is from the lower dimensional CNTs to hi…