Materials Literature
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Nanocrystalline Ni0.5Zn0.5Fe2O4 thin films have been synthesized with various grain sizes by a sol-gel method on polycrystalline silicon substrates. The morphology, magnetic, and microwave absorption properties of the films calcined in the 673–1073 K range were studied with x-ray diffraction, scanning electron microsc…
Epitaxial barium ferrite (BaM) films have been successfully grown by molecular beam epitaxy (MBE) for the first time on 6H silicon carbide substrates by using a 10 nm single crystalline MgO (1 1 1)//SiC(0 0 0 1) template, also grown by MBE. X-ray photoelectron spectroscopy showed that the thin MgO template in the earl…
Bovine chymosin is an aspartic protease that selectively cleaves the milk protein kappa-casein. The enzyme is widely used to promote milk clotting in cheese manufacturing. We have developed models of residues 97-112 of bovine kappa-casein complexed with bovine chymosin, using ligand docking, conformational search algo…
Supported metal catalysts are used in many industrial applications. Experiments have shown that drying may significantly impact the metal distribution within the support. Therefore we need to have a fundamental understanding of drying. In this work, a theoretical model is established to predict the drying process, and…
Periodic and Fibonacci Au nanoparticle arrays of varying interparticle separations were fabricated on light emitting Er:SiNx films using electron beam lithography. A 3.6 times enhancement of the photoluminescence (PL) intensity accompanied by a reduction in the Er3+ emission lifetime at 1.54 μm has been observed in Fi…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Asim Guchhait, Arup K. Rath, Amlan J. Pal; Near-IR activity of hybrid solar cells: Enhancement of…
We report that the incorporation of hydroxide ions (OH)- significantly enhances the superconducting transition temperature (Tc) in the LnFeAsO-based superconductors (Ln1111: Ln = La, Ce and Pr). For La1111, Tc of the (OH)- incorporated sample synthesized using high-pressure technique becomes 35 K, which is higher by 7…
We examined ring-opening polymerizations (ROPs) of ε-caprolactone in toluene at 25−60 °C catalyzed by scandium perfluoroalkanesulfonates and perfluoroalkanesulfonimides. Using these scandium catalysts, which have strong electron-withdrawing ligands, the ROPs proceeded quickly. Under identical conditions, polymerizatio…
A full structural investigation was carried out on novel lead-free piezoelectric solid solutions of xBiScO3−(1−x)BaTiO3 (BS-BT) between x=0.0 and 0.35 utilizing x-ray and neutron powder diffraction. This particular system demonstrated an extended tetragonal-pseudocubic phase boundary at room temperature in the region…
A facile while flexible approach to size-controllable high-purity colloidal gold nanoplates has been presented. By adjusting the quantity of seeds and I(-) through a seed-mediated, cetyltrimethylammonium bromide (CTABr)-assisted synthetic system, the edge length of the gold nanoplates can be adjusted from 140 to 30 nm…
The noncovalent functionalization of boron nitride nanotubes (BNNTs) with perylene-derived molecules has been reported experimentally [Wang et al. J. Am. Chem. Soc. 2008, 130, 8144]. Here we study the structural and electronic properties for the perylene-derivative functionalized BNNTs using first-principles calculati…
In situ optical emission spectroscopy was used to study the temporal and spatial behavior of laser induced plasmas in the laser-furnace synthesis of single-walled carbon nanotubes (SWCNTs). A graphite composite target located within a sealed quartz tube with a chemical stoichiometric composition of 95:4:1 at. wt % of…
Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Icon Share Twitter Facebook Reddit LinkedIn Tools Icon Tools Reprints and Permissions Cite Icon Cite Search Site Citation Byounghak Lee, Lin-Wang Wang; Electronic structure of ZnTe:O and its usability for intermediate b…
A novel method of measuring interfacial shear strength using Raman peak shift is reported. Carbon nanotubes (CNT) functionalized with biomolecules have been used to form a composite with polyvinyl alcohol. Type I collagen has proven to improve the load transfer from the matrix to the tubes leading to improvement of in…
Novel cationic drug carriers based on hyperbranched poly(amine-ester)s were successfully prepared through proton-transfer polymerization. Both vinyl and epoxy groups of commercially available glycidyl methacrylate monomer could be polymerized through oxyanionic initiation of triethanolamine in the presence of potassiu…
Cross-linked functional polymers (functional resins) are versatile, designable and useful supports for metal nanoclusters that are able to provide reasonably thermally and mechanically stable multi-functional metal catalysts characterized by good activity and selectivity. The paper reviews authors' contributions to th…
Colloidal CdSe nanocrystals (NCs) were successively overcoated with CdS shells, and the X-ray diffraction and Raman measurements of the yielded CdSe/CdS core/shell NCs revealed that stress in the CdSe core was dramatically increased with the growth of the CdS shell but was released when the shell became thicker. The C…
Aortic heart valve disease is a growing health problem and a tissue-engineered aortic heart valve could be a promising therapy. In this paper, decellularized porcine aortic heart valve leaflets are used as scaffolds and loaded with growth factor and heparin via layer-by-layer electrostatic deposition (LbL technique) w…
Replication of polyethylene nano-micro hierarchical structures using ultrasonic forming, Lee, Chi Hoon, Jung, Phill Gu, Lee, Sang Min, Park, Sang Hu, Shin, Bo Sung, Kim, Joon-Ho, Hwang, Kyu-Youn, Kim, Kyoung Min, Ko, Jong Soo
Isothermal stress- and magnetic field-induced entropy changes in a Fe-doped Ni–Mn–Ga alloy have been measured in the limits of low applied stress and magnetic field. We have obtained that in this limit while elastocaloric is conventional, giving rise to an increase of entropy when a stress is applied, magnetocaloric e…