Materials Literature
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We report the observation of large exchange bias (EB) in Ni 50− x Co x Mn 38 Sb 12 Heusler alloys with x = 0, 2, 3, 4, 5, which is attributed to the coexistence of ferromagnetic (FM) and antiferromagnetic (AFM) phases in the martensitic phase. The phase coexistence is possibly due to the supercooling of the high tempe…
A lithium salt of anionic scandium tetraborohydride complex, LiSc(BH 4 ) 4, was studied both experimentally and theoretically as a potential hydrogen storage medium. Ball milling mixtures of LiBH 4 and ScCl 3 produced LiCl and a unique crystalline hydride, which has been unequivocally identified via multinuclear solid…
Monodisperse colloidal CdSe nanocrystals (NCs) with different sizes were synthesized, and the time-resolved photoluminescence (PL) spectra were measured to explore the evolution of surface states during the NC’s growth. The PL quantum yield, fluorescence lifetime, and the surface-related emission had the identical siz…
Abstract RuO 2 ‐based mesoporous thin films of optical quality are synthesized from ruthenium‐peroxo‐based sols using micelle templates made of amphiphilic polystyrene‐polyethylene oxide block copolymers. The mesoporous structure and physical properties of the RuO 2 films (mesoporous volume: 30%; pore diameter: ∼30 nm…
Abstract This work compared the elastomeric properties of two low‐crystallinity ethylene–octene copolymers. One was a block copolymer with lamellar crystals and the other was a random copolymer with fringed micellar crystals. The comparison of the stress–strain behavior at 23°C revealed that the initial elastic modulu…
We have studied single-shot femtosecond laser ablation of graphite by combining a variety of experimental techniques including Raman spectroscopy, atomic force microscopy as well as time of flight spectrometry. The comprehensive analysis reveals insights into the ablation process by exploring the surface structure, th…
First-principles calculations, based on density-functional theory, are exploited to investigate the nature of the ground-state structure of barium zirconate. The experimentally observed simple-cubic structure is found to be dynamically unstable against an antiferrodistortive transformation. This instability manifests…
Abstract We have performed ab‐initio density‐functional theory self‐consistent calculations using the full‐potential linear muffin‐tin orbital method within local spin‐density approximation to study the electronic and magnetic properties of Ni 2 MnZ (Z = Al, Ga and In) in L2 1 structure. The magnetic phase stability i…
An efficient light-harvesting antenna was achieved via self-assembly of two distinct chromophores into nanoscale supramolecular coordination polymers (NSCPs). Efficient fluorescence resonance energy transfer is favorable in the self-assembled 1-D nanostructure as a result of fast and efficient exciton migration in the…
Extreme makeover of cholesterol: Cholesterol exchange is a major reason for the instability of liposomes in blood. The formation of a covalent hybrid between cholesterol and glycerophosphocholine preserves the bilayer-stabilizing effect of free cholesterol but prevents its transfer from the bilayer. Thus, disterolphos…
"The aim of this book is to give a state-of-art overview on aspects of micro- and nanomechanics of polymers, polymeric blends and composites"--Provided by publisher.
Ce-doped Bi1−xCexFeO3 (BCFOx) thin films with x = 0–0.12 were successfully prepared on SnO2 : F(FTO)/glass substrates by chemical solution deposition. The BCFOx films showed a gradual phase transition from a rhombohedral to a pseudotetragonal structure with increase in the Ce content. The substitution of Bi with Ce gr…
We have investigated the electronic structures and energy relaxation dynamics of vinylene-bridged hexaphyrins using steady-state and time-resolved spectroscopies along with theoretical calculations in order to reveal their aromaticity-dependent electronic and magnetic properties. Ethynyl-TIPS-substituted planar and re…
Reflective color filters using two-dimensional photonic crystals based on sub-wavelength gratings were proposed and constructed. Using low-cost nanoimprint lithography, an amorphous silicon layer was deposited through the low-temperature PECVD process and patterned into two-dimensional structures. The isolated amorpho…
In this work we present the results of theoretical analysis of magnetic quantum oscillations of the velocity and attenuation of high frequency ultrasound waves traveling in quasi-two-dimensional conductors. We chose a geometry where the wave vector of the longitudinal sound wave and the external magnetic field are dir…
Abstract Polyaniline–graphite composites were prepared via in situ emulsion pathway, using different weight ratios of aniline to graphite. These composites were characterized for thermal, electrical, and spectral attributes. The thermal stability (∼ 230°C) and electrical conductivity (67.9 S/cm) were improved signific…
We observed spin injection into silicon through Fe/MgO tunnel barrier by using non-local magnetoresistance measurement technique. Fe/MgO tunnel barrier contacts with a lateral spin valve structure were fabricated on phosphorous doped silicon-on-insulator substrate. Spin injection signals in the non-local scheme were o…
We report new results for the exchange bias effect in Nd(1-x)Sr(x)CoO(3) for x = 0.20 and 0.40, where the exchange bias phenomenon is involved with the ferrimagnetic (FI) state in a spontaneously phase separated system. The zero-field-cooled magnetization exhibits FI (T(FI)) and ferromagnetic (FM; T(C)) transitions at…
A novel surface modification technique was employed to produce a polymer modified positive contrast agent nanoparticle through attachment of well-defined homopolymers synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. A range of RAFT homopolymers including poly[N-(2-hydroxypropyl)m…
Surface-enhanced Raman Scattering (SERS) of R6G has been observed in two different silver colloids in the presence of KBr. It was found in spherical nanoparticles with an average diameter of 10 ± 2 nm and in their photoinduced conversion products with sodium light irradiation, silver nanoprisms, with an average edge l…