Materials Literature
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Abstract Surface‐enhanced Raman spectroscopy (SERS) has the potential to make a significant impact in biology research due to its ability to provide information orthogonal to that obtained by traditional techniques such as mass spectrometry (MS). While SERS has been well studied for its use in chemical applications, d…
Magnetic properties and magnetic entropy changes in spinels (Cd,M)Cr2S4 with M=Cu or Fe have been studied. The saturation moments per formula unit are about 4.77μB for Cd0.8Cu0.2Cr2S4 and 4.41μB for Cd0.7Fe0.3Cr2S4. Magnetic transition in Cu- and Fe-doped samples are of second order in nature, and their Curie temperat…
Abstract We present the first study and results on the preparation and characterization of montmorillonite clay filler based polymer blend nanocomposites of the miscible poly(phenylene oxide)/polystyrene blend. Intercalated nanocomposites, prepared by a melt‐processing method with 2–6 wt % commercially available organ…
The additions of trace amounts of small interstitial atoms (carbon, boron, and nitrogen) to Fe–Ga (Galfenol) alloys have a small but beneficial effect on the magnetostriction of Fe–Ga alloys especially at high Ga compositions. The saturated magnetostrictions [(3∕2)λ100’s] of both slow cooled and quenched single crysta…
The interaction of water vapor on clean diamond (100) has been studied using ultraviolet photoemission spectroscopy (UPS), X-ray photoemission spectroscopy (XPS), X-ray-absorption near-edge structure (XANES) spectroscopy, and high-resolution electron energy loss spectroscopy (HREELS). It is shown that water dissociate…
For molecular substances exhibiting harmonic and nonharmonic vibrations, we present a first-principles approach to predict enthalpy differences between phases at finite temperatures, including solid-solid and melting. We apply it to the complex hydride LiBH4. Using ab initio molecular dynamics, we predict a structure…
Abstract The mass transport rates to planar electrodes, in a series of electrochemical laboratory filter‐press reactors were measured to quantify the effects of the inlet and outlet design manifolds on the fluid flow. In small reactors, entrance/exit effects are especially important due to the localized generation of…
The structures of cationic rhodium carbonyl cluster compounds containing one to six Rh atoms are established by infrared multiple photon dissociation spectroscopy. Comparison with their well-known neutral analogues reveals that ionization of the neutral compounds destabilizes bridge bound CO ligands in Rh 2 (CO) 8 and…
Abstract In this article, a series of hybrid materials consisted of epoxy resin matrix and well‐dispersed amino‐modified silica (denoted by AMS) nanoparticles were successfully prepared. First of all, the AMS nanoparticles were synthesized by performing the conventional acid‐catalyzed sol–gel reactions of tetraethyl o…
Abstract The two resins of fluorine‐containing acrylate are synthesized by atom transfer radical polymerization. The raw materials used are hexafluorobutyl mathacrylate and dodecafluoroheptyl methacrylate. The FTIR, 1 HNMR, and 19 FNMR are used to characterize copolymer structures. The application as resins on dyed po…
ATP-dependent phosphorylation of glucose catalyzed by hexokinase can be detected in real time by a homogeneous visual inspection based on a water-soluble cationic polythiophene derivative (CPT) that responds to the presence of ATP. The color of CPT solutions changes from pink-red in the presence of ATP to yellow when…
Abstract The metastable calcium carbonate polymorph vaterite has recently been found to occur commonly in freshwater cultured pearls from Japan and China. Organic pigment molecules in these vaterite regions of freshwater cultured pearls were analysed by resonance and near‐resonance micro‐Raman spectroscopy, in single…
Hollow ZnS microspheres composed of nanoparticles have been successfully synthesized by a facile poly(ethylene glycol) (PEG) mediated hydrothermal route. The size of the hollow ZnS microspheres could be adjusted easily by controlling the chain length of PEG. The formation of these hollow microspheres is attributed to…
Abstract Bacterial cellulose produced by Gluconacetobacter xylinus was treated with sodium carbonate (Na 2 CO 3 ) and sodium hydroxide (NaOH) to remove entrapped noncellulosic materials. Fourier transform infrared (FTIR) spectroscopy has been used to investigate the effect of alkali on the chemical structure of bacter…
Nanocarbons, such as carbon nanohorns (CNH) and carbon nanotubes, are materials of interest in many fields of science and technology because of their remarkable physical properties. We report here a novel approach for using NIR laser-driven CNH as an antiviral agent. NIR laser-driven functional CNH complexes could ope…
A new cobalt(II) carboxylate-phosphonate, namely, Co[HO2C(CH2)3NH(CH2PO3H)2]2, with a layered architecture has been synthesized by hydrothermal reactions. The Co(II) ion in the title compound is octahedrally coordinated by six phosphonate oxygen atoms from four carboxylate phosphonate ligands. Neighboring CoO6 octahed…
Although the growth of nanocrystals has been investigated by several workers, investigations of the growth of 1-D nanostructures have been limited. We have investigated the growth kinetics of both uncapped and poly(vinyl pyrollidone) (PVP)-capped ZnO nanorods carefully by a combined use of transmission electron micros…
The La atomic wires were fabricated from La 2 @C 80 . After heating the single-walled carbon nanotubes encapsulating the La 2 @C 80, so-called nanopeapods, we obtained the atomic wires of La atoms inside carbon nanotubes (CNTs) and studied their structures by using high-resolution electron microscopy (HR-TEM) and elec…
Human mesenchymal stem cells (hMSCs) isolated from bone marrow aspirates were cultured on silk scaffolds in rotating bioreactors for three weeks with either chondrogenic or osteogenic medium supplements to engineer cartilage- or bone-like tissue constructs. Osteochondral composites formed from these cartilage and bone…
Abstract The effects of fumed silica on the crystallization behavior and thermal properties of poly(hydroxybutyrate‐ co ‐hydroxyvalerate) (PHBV) were investigated. The PHBV/silica composites were prepared by a melt‐blending method. The nonisothermal crystallization, melting process, and isothermal crystallization kine…