Materials Literature
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Radical polymerization of a gelable monomer 3-(triethoxysilyl)propyl methacrylate (TEPM) mediated by a chain transfer agent (CTA), cumyl dithiobenzoate (CDB), i.e., reversible addition−fragmentation chain transfer (RAFT) polymerization, has been studied. A series of well-defined PTEPM- block -polystyrene (PTEPM- b -PS…
The structural and conducting properties of single-wall carbon nanotubes (SWCNs) in embedded as well as in side contact with metal leads are obtained using efficient formalisms based on spin polarized tight-binding formulation incorporating full consideration of $s$, $p$, and $d$ basis sets for carbon and metal atoms.…
High density arrays of Zn 1− x Co x O ( x = 0.05, 0.10, 0.15, denoted by ZnCoO) nanorods were vertically grown on glass coated ZnO films via hydrothermal reaction at 70 °. The structures and morphology of the arrays were studied by x-ray diffraction, photoluminescence (PL) spectroscopy and field emission scanning elec…
Neutron powder diffraction studies on the structural evolution of hexagonal multiferroic YMnO 3 and YbMnO 3 from 1000 K to 1400 K, and from 1000 K to 1350 K, respectively, are presented. The temperature evolution of diffraction patterns suggests that YMnO 3 undergoes a phase transition to a non-polar structure above 1…
A computing engine, the Protein Structure Analysis Package ( PSAP ), has been developed to calculate and display various hidden structural and functional features of three-dimensional protein structures. The proposed computing engine has several utilities to enable structural biologists to analyze three-dimensional pr…
Nanocrystalline powders of undoped and lanthanide (Pr 3+ , Tm 3+ )-doped gadolinium gallium garnet, Gd 3 Ga 5 O 12 (GGG), were prepared by propellant synthesis and studied by x-ray powder diffraction (XRD), electron diffraction (ED), high-resolution electron microscopy (HREM) and luminescence spectroscopy. The x-ray d…
A novel algorithm for modeling the influence of the host lattice flexibility in molecular dynamics simulations is extended to chain-like molecules and mixtures. This technique, based on a Lowe-Andersen thermostat, maintains the advantages of both simplicity and efficiency. The same diffusivities and other properties o…
Monodisperse, colloidally stable, sub-3 nm europium sesquioxide (Eu 2 O 3 ), terbium sesquioxide (Tb 2 O 3 ), and Eu 3+ -doped gadolinium sesquioxide (Gd 2 O 3 :Eu 3+ ) nanocrystals have been synthesized via a hot solution-phase technique. The oleic acid concentration facilitated the production of the nanocrystals in…
A functional structure material with good thermal insulation properties, which can also reflect infrared light within a certain range, was obtained by introducing a photonic crystal structure as a reflector into oxidized porous silicon. The porous silicon multilayer was fabricated based on alternative changes in etchi…
Abstract Proteins contain hydrophilic groups, which can bind to water molecules through hydrogen bridges, resulting in water vapour adsorption. An increase in the degree of cross‐linking can be a method to improve the cohesiveness force and functional properties of protein‐based films. Thus, the objective of this work…
We report an optical study of transition metal dichalcogenide $2H\text{\ensuremath{-}}\mathrm{Ta}{\mathrm{S}}_{2}$ and the Na intercalated superconductor ${\mathrm{Na}}_{x}\mathrm{Ta}{\mathrm{S}}_{2}$ over a broad frequency range at various temperatures. A clear gap feature was observed for $2H\text{\ensuremath{-}}\ma…
Abstract Vanadium–aluminium co‐doped ZnO thin films have been grown by rf‐magnetron sputtering of Zn 0.90− x V 0.10 Al x O ( x = 0.01 to 0.03) aerogel nanoparticles. Even though the films were deposited at room temperature they were of good crystal quality and showed c‐axis texturing normal to the film surface. The fi…
Chirality of the amphiphile to promote gelation in the given solvent medium is narrated in a new catanionic surfactant mixture from a twin-chiral, twin-tailed surfactant derived from tartaric acid and cetyltrimethylammonium bromide (CTAB). The surfactant bis(decyloxy) succinic acid (BDSA), a chiral Gemini-type surfact…
Experimental data on the effect of grain size in the nanocrystalline range ( d = 20–500 nm) on the plastic deformation kinetics of fcc metals representing a wide range in stacking fault energy are evaluated to determine the governing mechanism. Special consideration is given to the anomalous temperature dependence of…
The program ORNL_SAS calculates solution small-angle X-ray and neutron scattering intensity profiles from a wide variety of structures, including atomic-resolution models of proteins and protein complexes, low-resolution models defined in any manner, or combinations of both. ORNL_SAS is capable of simultaneously gener…
A new series of chromophores, MPZn(n), which combine ethyne-bridged bis(terpyridyl)metal(II)-(porphinato)zinc(II) (MPZ(n)) and oligomeric, ethyne-bridged (porphinato)zinc(II) (PZn(n)) architectures, have been synthesized and characterized, along with a series of derivatives bearing pyrrolidinyl electron-releasing grou…
Electrospinning of a polyelectrolyte and vapor deposition polymerization were combined to fabricate nanotubes of oxidatively stabilized poly(acrylonitrile) (PANDelta) with an outer diameter of 100 nm, a wall thickness of 14 nm, and centimeter-scale length. Poly(styrene sulfonate) sodium (PSSNa) nanofibers serves as sa…
Individual colloidal particles are locally functionalized with nanoscale control. Here we use the particle lithography technique to mask one region of a silica or polystyrene particle (size 3.0 mum down to 170 nm), while the remaining 95% or more of the particle is coated with various sized nanocolloids. The images an…
Bismuth telluride (Bi2Te3) nanowires were deposited into porous alumina templates with 35 nm diameter pores by a pulsed-potential electrodeposition method. For growth at temperatures between 1 and 4 degrees C, the nanowires filled 93% of the pores of the template, and the growth fronts were uniform with nanowire lengt…
This paper reports for the first time that the shape of silver nanostructures on quartz slides, from a nanoprism to a nanodisc, can be easily realized within a few minutes simply by adjusting the pH value of the immersion solution. Different colours of the quartz slide covered with Ag nanostructures appeared, from dee…