Materials Literature
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Reaction of LnCl 3 (Ln = Y, Yb) with 2 equiv of NaL 2,6-ipr2 Ph (L 2,6-ipr2 Ph = [(2,6- i Pr 2 C 6 H 3 )NC(Me)CHC(Me)N(C 6 H 5 )] − ) afforded the chlorides (L 2,6-ipr2 Ph ) 2 YCl ( 1 ) and (L 2,6-ipr2 Ph ) 2 YbCl ( 2 ). Crystal structure analysis revealed 2 to be the unsolvated monomer. Treatment of the chlorides 1 a…
The growth-temperature dependency and interface structure effects on the thermal conductivity of the highly textured AlN thin films on (001) Si substrates were systematically studied by characterizing the crystal structures, surface morphologies, interface structures, chemical compositions, and thermal conductivity us…
The vertically aligned ZnO nanorod arrays were achieved from aqueous chemical route on soda lime and transparent conducting oxide coated glass substrates. The length of nanorods was varied from 1.6 μm to 4.5 μm by varying deposition time. The aspect ratio of ZnO nanorod was increased with increasing deposition time. C…
Nanosphere lithography (NSL) has been regarded as an inexpensive, inherently parallel, high-throughput, materials-general approach to the fabrication of nanoparticle arrays. However, the order of the resulting nanoparticle array is essentially dependent on the quality of the colloidal monolayer mask. Furthermore, the…
Using a grafting-through strategy, brush polymers containing semiconducting polyene backbones were efficiently synthesized by cyclopolymerization for the first time. Macromonomers containing poly(l-lactide) and poly(ε-caprolactone), prepared by living ring-opening polymerization, were polymerized using the Grubbs-Hove…
An enzyme packed microreactor was compared with a batch reactor system to determine effects of reaction water content on immobilized Candida antarctica Lipase B (Novozyme 435, N435) reusability, efficiency of end-group functionalization, apparent monomer conversion rate constants ( k app ), average molar mass ( M n ),…
We report a detailed investigation of the magnetocaloric properties of self-doped polycrystalline LaMnO(3+δ) with δ = 0.04. Due to the self-doping effect, the system exhibits a magnetic transition from a paramagnetic to ferromagnetic-like canted magnetic state (CMS) at ~120 K, which is associated with an appreciably l…
The introduction of acid-degradable acetal moieties into a hyperbranched polyether backbone has been achieved by the design of a novel epoxide-based degradable inimer. This new monomer, namely, 1-(glycidyloxy)ethyl ethylene glycol ether (GEGE), has been copolymerized in the anionic ring-opening polymerization (AROP) w…
Peripheral nerve injury is a debilitating condition. The gold standard for treatment is surgery, requiring an autologous nerve graft. Grafts are harvested from another part of the body (a secondary site) to treat the affected primary area. However, autologous nerve graft harvesting is not without risks, with associate…
In this work, we report a magnetic technique for reversible wetting–dewetting transitions of microdroplets on highly hydrophobic surfaces. A superparamagnetic microdroplet can be reversibly switched between the Cassie state and the Wenzel state on a highly hydrophobic microstructured silicon substrate by the applicati…
Graphene oxide (GO) flakes dissolved in water can spontaneously form liquid crystals. Liquid crystallinity presents an opportunity to process graphene materials into macroscopic assemblies with long-range ordering, but most graphene electronic functionalities are lost in oxidation treatments. Reduction of GO allows re…
The effects of the dielectric environment on the optical extinction spectra of gold nanorods were quantitatively studied using individual bare and silica-coated nanorods. The dispersion and amplitude of their extinction cross-section, dominated by absorption for the investigated sizes, were measured using spatial modu…
We report the violation of the Pauli limit due to intrinsic spin-orbit coupling in SrTiO${}_{3}$ heterostructures. Via selective doping down to a few nanometers, a two-dimensional superconductor is formed, geometrically suppressing orbital pair breaking. The spin-orbit scattering is exposed by the robust in-plane supe…
The electronic band structure, density of states, dielectric function, optical absorption, and infrared spectrum of cubic BaSnO3 were simulated using density functional theory, within both the local density and generalized gradient approximations, LDA and GGA, respectively. Dielectric optical permittivities and polari…
A soft chemical co-precipitation method is proposed for the synthesis of nanosized multiferroic BiFeO3 (BFO) powders. Pure phase (BFO) powder was obtained by controlling the chemical co-precipitation process, pH level and calcination temperature. The evolutions of phase constitution and structural characteristics show…
Corannulene has been a useful prototype for studying C-based nanostructures as well as surface chemistry and reactivity of sp(2)-hybridized carbon-based materials. We have investigated fluorination and hydrogenation of corannulene carrying out density functional theory calculations. In general, the fluorination is ene…
Optical properties of insulating BaSnO3 (BSO) and conducting Ba0.97La0.03SnO3 (BLSO) single crystals were studied at room temperature in a wide spectral range between 0.01 and 5.9 eV by means of spectroscopic ellipsometry. The far-infrared spectra of the optical phonons in BSO and BLSO were complemented by polarized R…
Silver nanoclusters complexed with dihydrolipoic acid (DHLA) exhibit molecular-like excited-state properties with well-defined absorption and emission features. The 1.8 nm diameter Ag nanoparticles capped with Ag8 clusters exhibit fluorescence maximum at 660 nm with a quantum yield of 0.07%. Although the excited state…
Free-standing single-crystal PbTiO3 nanoplates (see picture) were synthesized by a facile hydrothermal method. A “self-templated” crystal growth is presumed to lead to the formation of the PbTiO3 nanoplates, which have ferroelectric single-domain structures, whose polarization areas can be manipulated by writing and r…
This study attempts to understand the impact of different shapes of an individual micro/nanomaterial on their biotoxicities to aquatic organisms. Two differently shaped Cu(2)O micro/nanocrystals (cubes and octahedrons with side lengths of 900 nm) were exposed to Daphnia magna for 72 h, afterward several antioxidant bi…