Materials Literature
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Li 2 NH is a promising candidate for hydrogen storage. However, its performance for hydrogen absorption is strongly dependent on its preparation method. In this paper, we report that an ultrafast solid reaction between Li 3 N and LiNH 2 provides a new synthesis approach to an effective Li 2 NH material, which can reve…
This investigation examines metal ion adsorption on mesoporous silicate, MCM‐41, synthesized from sodium silicate solution and cethyltrimethylammonium bromide (CTAB). MCM‐41 has potential as an adsorbent material, with a regular hexagonal pore structure, large specific surface area, and large pore volume. The MCM‐41 s…
TiO 2 /activated carbon composite photocatalyst was prepared by a microwave-assisted impregnation method and was employed for the removal of methanol from humid air streams. A commercial microwave oven (800 W) was used as the microwave source. Under 2450 MHz microwave irradiation, titanium tetra-isopropoxide (TTIP) wa…
Composites of poly(dimethylsiloxane) and gold nanoparticles (see figure) with an adsorbed monolayer of 1–alkanethiols afford a versatile reversible color system through treatment with solvents that swell the polymer. Even dichroism can be created, which can be converted again to optically isotropic states. Upon heat t…
Abstract In this paper, ethylenebisformamide was synthesized and used as a novel plasticizer for corn starch to prepare thermoplastic starch (EPTPS). FT‐IR spectra showed that the absorption bands of the C‐O groups of the starch molecules were shifted to lower wavenumbers, which indicated that a strong and stable hydr…
Homothallic sexual reproduction and auxosporulation were studied in monoclonal cultures and seminatural populations of the freshwater epipelic diatom Navicula cryptocephala Kütz. Gametangia paired via the girdle, one gamete was formed per gametangium (and hence one zygote per pair of gametangia), and gamete fusion too…
Abstract Temperature nonuniformity is a critical problem in rapid thermal processing (RTP) of wafers because it leads to uneven diffusion of implanted dopants and introduces thermal stress. One cause of the problem is nonuniform absorption of thermal radiation, especially in patterned wafers, where the optical propert…
Stable and continuous gold-coated fibrous mats, which may be used as electrodes for electrochemical experiments or for fabrication of electronic devices, have been fabricated. The formation of conductive gold films on flexible electrospun poly(methyl methacrylate) ultrafine fibrous mat substrates (see figure) is descr…
Highly pure membranes of double–walled carbon nanotubes (DWCNTs; see figure) have been prepared by combining a purification process with the competition characteristics of water and ethanol interactions with the surface of CNTs. The resulting ultrathin films consist of a single layer of CNTs and they show an enhanced…
Carbon nanotube field-effect transistors (CNTFETs) produce band gap derived infrared emission under both ambipolar and unipolar transport conditions. We demonstrate here that heterogeneities/defects in the local environment of a CNTFET perturb the local potentials and, as a result, the characteristic bias dependent mo…
Motivated by the various physical properties observed in $\theta$-(BEDT-TTF)$_2$X, we study the ground state of extended Hubbard model on two-dimensional anisotropic triangular lattice at 1/4-filling with variational Monte Carlo method. It is shown that the nearest-neighbor Coulomb interaction enhances the charge fluc…
The ligand-field induced splitting energies of f-levels in lanthanide-containing elpasolites are derived using the first-principles universal orbital-free embedding formalism [Wesolowski and Warshel, J. Phys. Chem. 1993, 97, 8050]. In our previous work concerning chloroelpasolite lattice (Cs2NaLnCl6), embedded orbital…
ABSTRACT CAFE, a combination of Cellular Automata (CA) to describe the material microstructural properties, and Finite Elements to represent the macroscopic strain, allows the evolving states of microstructural change to be analysed in a deforming body. The paper explores the potential of the technique for the assessm…
We have studied the structure and morphology of self-assembled polyelectrolyte multilayers prepared using poly(styrenesulfonate) (PSS) and four different cationic poly(alkoxythiophene) derivatives bearing methylimidazolium-terminated ionic side chain at the 3-position of the thiophene ring: poly(1-methyl-3-[3-[3-thien…
Charcoals produced by a modern, efficient method were studied in the kinetic regime, at oxygen partial pressures of 0.2 and 1 bar by thermogravimetric experiments and their reaction kinetic modeling. The charcoals were ground to an average particle size of 5−13 μm. A partial removal of minerals from the feedstock (cor…
We report the synthesis of novel hyperbranched amphiphilic poly(ethylene oxide)−polystyrene (PEO−PS) n copolymers obtained by controlled radical polymerizations: nitroxide mediated polymerization (NMP) and reversible addition−fragmentation chain transfer (RAFT). The macroinimers used to synthesize copolymers have the…
Abstract Chitosan (degree of deacetylation of 90.2%) and N ‐carboxymethylchitosan ( N ‐CMCh) (degree of substitution of 18.5%) were analyzed using thermogravimetric analysis in order to determine their thermal stability. Also, their films were evaluated using scanning electron microscopy (SEM) and mechanical and dynam…
We report the experimental observation of spin-induced magnetoresistance in single-wall carbon nanotubes contacted with high-transparency ferromagnetic electrodes. In the linear regime the spin-induced magnetoresistance oscillates with gate voltage in quantitative agreement with calculations based on a Landauer-B\"utt…
Well-aligned single crystalline ZnO nanobridges have been synthesized selectively across the prefabricated electrodes on silicon substrates by a single-step thermal evaporation method without using any metal catalysts or a predeposited ZnO seed layer that was a prerequisite for such synthesis. The growth region was se…
The results of study of the surface chemistry of nanodiamonds treated by a mixture of HClO4 and H2SO2 acids are presented. Changes of the composition of surface diamond groups brought up by thermal annealing were monitored by Fourier transformed infrared spectroscopy and temperature‐programmed desorption. The decompos…