Materials Literature
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A holographic technique for fabricating an electrically switchable liquid crystal/polymer composite Fresnel lens is reported. A Michelson interferometer is used to produce the required Fresnel pattern, by placing a convex lens into one path of the interferometer. Simplicity of the method and the possibility of fabrica…
The influence of the isovalent substitution of selenium for sulfur in the anion sublattice of mixed TlInS 2(1− x ) Se 2 x crystals has been studied by means of dielectric measurements. It is shown that transformations in the In 4 (S x Se 1− x ) 10 structural unit must be taken into account considering the nature of po…
Understanding the adsorption of gold nanoparticles (AuNPs) on self-assembled monolayers (SAMs) is important because an assembly of the AuNPs-SAM-gold substrate provides easily controllable metal–metal junctions, in which fascinating phenomena such as electron tunneling and surface-enhanced Raman scattering can occur.…
A series of five alumina-supported palladium catalysts have previously been prepared and characterised by a combination of CO chemisorption and infrared spectroscopy. The reactive attributes of these catalysts are examined using the hydrogenation of crotonaldehyde as a test reaction, using a modified infrared gas cell…
The effective thermal conductivity of silicone/phosphor composites is studied experimentally and numerically. Thermal conductivity measurements are conducted from 30°C to 150°C for the composites with phosphor volume fraction up to 40%. In the numerical study, a finite element model with empirical particle size distri…
Spontaneous magnetization above room temperature is observed in a coordination π–π framework of 1D polymeric Cu(II) chains with 2,2′-bipyridine ligands. The magnetic susceptibility data indicate that at lower temperature region the crystal shows the usual paramagnetism due to Cu(II) ions but becomes ferromagnetic at h…
Growing evidence has indicated the potential adverse effects on cardiovascular system of some nanomaterials, including fullerenes. In this study, we have evaluated the biological effects of multiwall carbon nano-onions (MWCNOs) (average size of 31.2 nm, ζ potential of 1.6 mV) on human umbilical vein endothelial cells…
We report optical microscopy measurements of three-dimensional trajectories of individual multiwalled carbon nanotubes (MWCNTs) in nanoscale silica slit pores. Trajectories are analyzed to nonintrusively measure MWCNT interactions, diffusion, and stability as a function of pH and ionic strength. Evanescent wave scatte…
Fragment-based drug discovery (FBDD), which is a molecular build-up strategy from small scaffolds, has recently become a promising approach for lead-compound generation. Although high-throughput protein crystallography is usually used to determine the protein–ligand complex structure and identify potential hit compoun…
INTRODUCTION: Cardiac glycosides in Calotropis procera have therapeutic use as inhibitors of Na⁺/K⁺-ATPase to regulate heart contractions. A large amount of research attention has been received by these compounds towards their identification and structural characterisation. In order to achieve rapid identification of…
The possibility that various silane treatments may enhance the corrosion resistance of a magnesium alloy AZ31 with silane-modified acrylate interpenetrating polymer network (IPN) coating has been investigated. Potentiodynamic electrochemical tests and neutral salt spray test were applied to evaluate the corrosion perf…
Initial corrosion behavior of AZ91 magnesium alloy in simulating acid rain containing Cl - is investigated by SEM/EDX and electrochemical method. The results show that corrosion of magnesium alloy in diluted NaCl solution was localized corrosion, and the attack only occurred around the scattered AlMn particle which in…
The biological addition of oligosaccharide moieties to asparagine residues of N-glycoproteins influences the properties and bioactivities of these macromolecules. The low-temperature neutron crystal structures of three N-glycoprotein linkage models and analogues provide accurate characterization of the three-dimension…
The dielectric properties of dual-layer PZT/ZrO 2 thin films were measured at microwave frequencies in both a metal–insulator–metal (MIM) capacitor and a coplanar waveguide (CPW) up to 50 GHz. Both PZT and ZrO 2 films were prepared by the chemical solution deposition method. The measured dielectric loss of the PZT/ZrO…
Light-switchable peptide: The combination of cyclization and a photocleavable amino acid provides a potentially versatile strategy for the photocontrol of peptide function. Upon photoirradiation, photoactivatable cyclic matrix metalloproteinase-3 inhibitor peptide (MMPI) was degraded to give the corresponding linear p…
This paper reports on several developments of X-ray fluorescence techniques for macromolecular crystallography recently implemented at the National Institute of General Medical Sciences and National Cancer Institute beamlines at the Advanced Photon Source. These include (i) three-band on-the-fly energy scanning around…
Magnetostrictive materials are distinguished by an inherent coupling between their mechanical and magnetic processes which is manifested as a direct (actuator) and an inverse (sensor) effect.The piezomagnetic equations for modeling these attributes can be derived from the thermodynamic potentials, with the usual assum…
We present a dual-negative refraction effect based on the overlapping bands in a two-dimensional triangular photonic crystal formed by holographic lithography. Under certain conditions, one incident plane wave launched into this photonic crystal can be dispersed into two negative refracted waves at the same frequency…
Abstract This work aims to develop a facile and effective approach to tailoring amine functional groups on the TiO 2 surface by depositing a thin film of plasma polymeric allylamine which is rich in amine groups. Furthermore, the primary amine groups on the surface are used to covalently immobilize heparin. The result…
In the present experimental study, we describe the high capacity of a poly(amido amine)-tris(hydroxymethyl)amidomethane dendrimer for the physical adsorption of various chemical species (ligands), namely, cationic copper, anionic nitrate, and polyaromatic hydrocarbon phenanthrene. A pH-dependent specificity was observ…