Materials Literature
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Abstract Dual‐functional MnO 2 ‐decorated poly(3,4‐ethylenedioxythiophene) (PEDOT/MnO 2 ) nanoellipsoids are fabricated for enhancement of neurite outgrowth during differentiation and real‐time monitoring of PC12 cells. The PEDOT nanoellipsoids are prepared by chemical oxidation polymerization in reverse microemulsion…
Abstract Polycrystalline ternary CuInS 2 (CIS) nanorods with stoichiometric composition have been synthesized by using a nanocasting approach employing track‐etched polycarbonate films as soft templates. The CuInS 2 chalcopyrite phase was obtained by using molecular copper and indium oximato complexes and thiourea as…
A novel series of solution-processable near-infrared (NIR) electrochromic aromatic poly(N-phenylbenzylamines) (RPAMs) have been synthesized by the reduction of polyazomethines (PAMs). The RPAMs were characterized by FT-IR and 1H NMR spectroscopy. Thermogravimetric analysis (TGA) showed that all the RPAMs were stable,…
The ability to assemble nanoparticles (NPs) into desired patterns in a controlled fashion is crucial for the study of collective properties and for the fabrication of a variety of NP-based devices. Drying-mediated assembly directed by a template provides a facile route for organizing NPs in predefined patterns. We uti…
The phase diagrams of tetragonal hen egg white lysozyme containing besides thermodynamic (solubility) also kinetic (nucleation) data were determined for pH values of 4.4, 5.0, and 6.0, 3 to 7 wt % sodium chloride concentrations and lysozyme concentrations from 5 to 70 mg/mL by the use of a turbidity technique. This ne…
The magnetoelectric response of bi- and symmetric trilayer composite structures to pulsed magnetic fields is experimentally investigated in detail. The structures comprise layers of commercially available piezoelectric (lead zirconate titanate) and magnetostrictive (permendur or nickel) materials. The magnetic-field p…
Titanium thin films were deposited by DC magnetron sputtering. The glancing angle deposition (GLAD) method was implemented to prepare two series of titanium films: perpendicular and oriented columnar structures. The first series was obtained with a conventional incident angle α of the sputtered particles (α = 0°), whe…
Abstract Serine proteases, ubiquitous enzymes known to function in digestion and immune protection in both vertebrates and invertebrates and implicated in regeneration in some species, were investigated in the California blackworm, Lumbriculus variegatus . Several serine proteases, rather than a single enzyme with bro…
The increasing demand for sustainable and green energy supply spurred the surging research on high-efficiency, low-cost photovoltaics. Colloidal quantum dot solar cell (CQDSC) is a new type of photovoltaic device using lead chalcogenide quantum dot film as absorber materials. It not only has a potential to break the 3…
Abstract Carbon nanowalls (CNWs) were grown by atmospheric dc plasma enhanced chemical vapour deposition method. Maintaining plasma at atmospheric pressure give us possibility to synthetize CNWs at high rate. By using two different liquid carbon sources we can control CNWs density. Growth of sparsely distributed CNWs…
L-Proline supported on nano gold surface in PEG-400 catalyst system has been developed for use in the direct aldol condensation of acetone with aldehydes. Successful immobilization on surface of gold nanoparticles was confirmed using multiple analytical techniques. The supported catalyst could be separated from the re…
Spongy graphene (SG), a nanoporous material with a high surface area, is used as a versatile and recyclable sorber. On page 4421, Litao Sun, Rodney S. Ruoff, and co-workers report that SG shows highly efficient absorption of petroleum products, fats, and toxic solvents and can be regenerated by heat treatment, yieldin…
Video camera analysis was used to measure the number of bounces of water droplets and modified water droplets on a range of superhydrophobic surfaces with different surface microstructures from rounded to ridge-like to needle-like. It was found that the number of bounces could be related to the static water contact an…
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences.
A core/sheath nanofiber membrane with poly[bis(p-methylphenoxy)]phospha-zene (PMPPh) as the sheath and easily spinnable polyacrylonitrile (PAN) as the core was prepared via a coaxial electrospinning process. Field-emission scanning electron microscopy and transmission electron microscopy were used to characterize the…
On the basis of the energetics and magnetic exchange interactions obtained from large-scale first-principles electronic structure calculations, a gallium-vacancy clustering model is proposed for the origin of colossal magnetic moments and high-temperature magnetism in gadolinium-doped gallium nitride. Monte Carlo simu…
Abstract The nucleating ability of p ‐cyclohexylamide carboxybenzene (β‐ NA ) towards isotactic polypropylene ( iPP ) was investigated by differential scanning calorimetry, X‐ray diffraction, polarized optical microscopy and scanning electron microscopy. β‐ NA is identified to have dual nucleating ability for α‐ iPP a…
High-pressure steam treatment (HPST) is a potential alternative method for the modification of lignocellulosic materials. The effect of HPST on oil palm mesocarp fibers (OPMF) was successfully investigated with treatment conditions of 170 ºC/ 0.82 MPa, 190 ºC/ 1.32 MPa, 210 ºC/ 2.03 MPa, and 230 ºC/ 3.00 MPa for 2 min…
This work establishes a modified atomic layer deposition (ALD) method, adding a rapid high temperature annealing step during every cycle of deposition without adding significant time to the overall reaction. To achieve the ultrafast heating requirement, an in situ flash lamp annealing (FLA) apparatus was designed and…
Crystallization and oriented attachment of monohydrocalcite (MHC) for the self-organization of dumbbell-like superstructures in the absence of any additives, as well as the crystalline phase transformation of MHC to anhydrous calcium carbonate (CaCO3), have been systematically described in this paper. In Mg2+-containi…