Materials Literature
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This paper reports on a novel and versatile method to synthesize sharp-edged crescent-shaped half-nanotubes (HNTs) using a flexible template-based nanofabrication method assisted by atomic layer deposition. This was achieved by electrodeposition inside crescent-shaped nanochannels created by a controlled removal of a…
In this study, occurence of failure after the interaction between an armour piercing 7.62 mm caliber projectile and a tempered bainitic steel has been investigated. The shot was performed at zero degree with a projectile velocity of 840 m/s. After the shot, microstructural and fractographical examinations were carried…
We present optical conductivity studies of the type-I clathrate Ba8Ga16Sn30, using a terahertz time-domain spectrometer (0.3-3.0 THz). The lowest-lying spectral peak at 0.72 THz due to the Ba(2) ion's off-center vibration in the oversized cage shows a drastic and anomalous temperature dependence. Below about 100 K, th…
Using coarse-grained DPD simulations, we study the morphology of AB diblock copolymer brushes in selective solvents which are good for the anchored A blocks but poor (of varying degrees measured by the distance from the Θ-point, τ B ) for B blocks. Choosing appropriate polymer compositions given by the fraction of B b…
Sub-Kelvin scanning tunneling spectroscopy in the Chevrel phases ${\mathrm{SnMo}}_{6}{\mathrm{S}}_{8}$ and ${\mathrm{PbMo}}_{6}{\mathrm{S}}_{8}$ reveals two distinct superconducting gaps with ${\ensuremath{\Delta}}_{1}=3\text{ }\text{ }\mathrm{meV}$, ${\ensuremath{\Delta}}_{2}\ensuremath{\sim}1.0\text{ }\text{ }\mathr…
Sonication and mild nitric acid washing have been compared in terms of the efficiency to remove amorphous carbon from multiwalled carbon nanotubes. Sonication is shown to be the faster and safer way without destroying the CNT host.
Abstract BACKGROUND: This paper describes the use of cotton stalk, an agricultural waste, for the preparation of sodium carboxymethyl cellulose (CMC) using microwave heating. The study includes the optimization of pre‐treatment and preparation processes, and the characterization of product. RESULTS: The optimal cotton…
A new crystal structure of human ubiquitin is reported at 1.8 Å resolution. Compared with the other known crystal structure or the solution NMR structure of monomeric human ubiquitin, this new structure is similar in its overall fold but differs with respect to the conformation of the backbone in a surface-exposed reg…
We have measured Raman-scattering spectra of single-crystalline FeTe${}_{0.6}$Se${}_{0.4}$ (${T}_{c}~$ 14.5 K) and its parent compound Fe${}_{1.074}$Te at various temperatures. In the parent compound Fe${}_{1.074}$Te, ${A}_{1g}$ and ${B}_{1g}$ modes have been observed at 158 and 202 cm${}^{\ensuremath{-}1}$, respectiv…
Abstract Biocomposites developed from wheat gluten using water without any chemicals as plasticizer and jute fibers as reinforcement have much better flexural and tensile properties than similar polypropylene composites reinforced with jute fibers. Wheat gluten is an inexpensive and abundant co‐product derived from re…
We have reported efficient bulk-heterojunction (regioregular poly (3-hexylthiophene) : (6,6)-phenyl C 61 butyric acid methyl ester (P3HT : PCBM)) solar cells with MoO 3 as a hole-selective layer deposited at different substrate temperatures from 100 °C to 400 °C by radio-frequency magnetron sputtering. The structure,…
Abstract Thermoplastic polyurethane elastomers (TPUs) are now widely used because of their excellent properties that include high tensile and tear strength, and good abrasion, impact and chemical resistance. TPUs are multiblock copolymers with alternating sequences of hard segments composed of diisocyanates and simple…
The complex behaviour of drop deposition on a hydrophobic surface is considered by looking at a model problem in which the evolution of a constant-volume liquid bridge is studied as the bridge is stretched. The bridge is pinned with a fixed diameter at the upper contact point, but the contact line at the lower attachm…
A concept of chiral, X-type organized π-conjugated oligomers, linked by means of a binaphthalene pincer, is presented. NMR spectroscopy and cyclic and differential pulse voltammetry indicate that these oligomers are in close proximity and influence each other in a through-space manner in their neutral as well as in th…
Thermal conductivity and mechanical properties of boron nitride (BN)-filled epoxy composite as a function of filler content, mixing conditions, and BN agglomerate size were studied. Both thermal conductivity and mechanical properties of the composite were found to increase with increases in filler content, mixing spee…
We have shown that Lewis-acidic halogenoaluminate ionic liquid (IL) containing subvalent bismuth can be used as a near-IR (NIR) luminescent material. Raman and absorption spectra evidence the coexistence of Bi(5)(3+) and Bi(+) in the liquid. The Bi(5)(3+) and Bi(+) emitters, stabilized by this Lewis-acidic liquid, dem…
Guided by experiment and band structure, we introduce and study a phenomenological Landau theory for the unusual charge and spin ordering associated with the Mott transition in the perovskite nickelates, with chemical formula RNiO3, where R=Pr, Nd,Sm, Eu, Ho, Y, and Lu. While the Landau theory has general applicabilit…
Porous thin films containing subnanometer channels oriented normal to the surface exhibit unique transport and separation properties and can serve as selective membranes for separation and protective coatings. While molecularly defined nanoporous inorganic and organic materials abound, generating flexible nanoporous t…
Novel 2,5-diferrocenyl-1-phenyl-1 H -pyrrole ( 4 ) and 2,3,4,5-tetraferrocenyl-1-phenyl-1 H -pyrrole ( 6 ) have been prepared by a 2- or 4-fold Negishi cross-coupling reaction of 2,5-dibromo-1-phenyl-1 H -pyrrole ( 3 ) and 2,3,4,5-tetrabromo-1-phenyl-1 H -pyrrole ( 5 ), respectively, with FcZnCl ( 2 ) (Fc = Fe(η 5 -C…
The principal Hugoniot for liquid hydrogen was obtained up to 55 GPa under laser-driven shock loading. Pressure and density of compressed hydrogen were determined by impedance-matching to a quartz standard. The shock temperature was independently measured from the brightness of the shock front. Hugoniot data of hydrog…