Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Macroscopically oriented stable organic radicals have been obtained by using a liquid-crystalline (LC) gel composed of an l-isoleucine-based low molecular weight gelator containing a 2,2,6,6-tetramethylpiperidine 1-oxyl moiety. The LC gel has allowed magnetic measurements of the oriented organic radical. The gelator h…
Abstract Variations of photoluminescence (PL) and Raman spectra of single-layer MoS 2 , MoSe 2 , WS 2 , and WSe 2 due to the vacuum deposition of C 60 or copper phthalocyanine (CuPc) molecules have been investigated. PL spectra are decomposed into two competitive components, an exciton and a charged exciton (trion), d…
This paper presents a novel U-shaped fiber surface-enhanced Raman scattering (SERS) spectra probe with high-performance remote sensing based on femtosecond laser ablation and deposition of photoreduced silver nanoparticles. As the width of the U-shaped structure is around 12 μm, the sensitivity is enhanced about four…
Wide-angle x-ray scattering (WAXS) is emerging as a powerful tool for increasing the resolution of solution structure measurements of biomolecules. Compared to its better known complement, small angle x-ray scattering (SAXS), WAXS targets higher scattering angles and can enhance structural studies of molecules by acce…
Low cost, simple, and environmentally friendly strategies for white-light generation which do not require rare-earth phosphors or other toxic or elementally scare species remain an essentially unmet challenge. Progress in the area of all-organic approaches is highly sought, single molecular systems remaining a particu…
Charge transport in field-effect transistors (FETs) made with silicon nanocrystals is governed by percolation effects, which lead to a nonlinear dependence of FET electrical properties on the thickness of the nanocrystalline film. The authors show how three-dimensional percolation effects cause exponential degradation…
Abstract Synthesis and nucleation ability of a novel silsesquioxane‐based β ‐nucleating agent for isotactic polypropylene ( iPP ) are presented. A silsesquioxane cage ( POSS ) was octa‐functionalized with a commercially used nucleating agent, namely N 2 , N 6 ‐dicyclohexylnaphthalene‐2,6‐dicarboxamide (NU‐100), and us…
The Preisach hysteresis model has been adopted extensively in magnetic and smart material-based systems. Fidelity of the model hinges on accurate identification of the Preisach density function. Existing work on the identification of the density function usually involves applying an input that provides sufficient exci…
Gas phase photodissociation electronic spectra of protonated azobenzene (ABH(+)) and 4-(dimethylamino)azobenzene (dmaABH(+)) were measured in a cryogenically cooled ion trap at temperatures of a few tens of Kelvin. Experimental results were complemented with electronic structure calculations in the ground state at the…
The aim of this study is to present transmission electron microscopy (TEM) as a powerful instrument for characterization of nanostructural materials, in particular, nanotubes. Various nanotubes such as typical multiwall carbon nanotubes (MWCNTs), high-crystalline MWCNTs, and vanadium oxide nanotubes (VONTs) in differe…
Under hydrothermal conditions, six series of novel lanthanide (Ln) organogermanates (LnGs) [Ln8Ge12(μ3-O)24E12(H2O)16]·14H2O (Ln(3+) = Pr(3+), 1; Nd(3+), 2; Sm(3+), 3; Eu(3+), 4; Gd(3+), 5; one-dimensional (1-D) LnG cluster organic chain (LnGCOC)), {[Nd8Ge12(μ3-O)24E12(H2O)10](μ2-H2O)2[Nd8Ge12(μ3-O)24E12(H2O)16]}·18H2…
Owing to their high emission intensity and size-based tunability, lead sulfide (PbS) quantum dots (QDs) have been employed in a broad spectrum of biological applications especially for the second near-infrared (NIR-II) biological imaging. However, the toxicity of Pb 2+ ions remains an unavoidable risk factor during bo…
Friction and wear properties of nano-Si 3 N 4 /nano-SiC composite were studied under nanolubricated conditions. Mineral oil mixed with nanoparticles of diamond was used as lubricant. A friction coefficient of 0.043 and a wear coefficient of 4.2×10 -7 were obtained for nano-Si 3 N 4 /nano-SiC composite under normal loa…
High Resolution Image Download MS PowerPoint Slide BiFeO 3 is an interesting multifunctional narrow band gap semiconductor that exhibits simultaneous multiferroic, photovoltaic, and photocatalytic behavior. Hence there is much interest in the growth of thin films of BiFeO 3 via chemical vapor deposition (CVD); however…
Predators have been shown to alter their foraging as a regulatory response to recent feeding history, but it remains unknown whether trap building predators modulate their traps similarly as a regulatory strategy. Here we fed the orb web spider Nephila pilipes either live crickets, dead crickets with webs stimulated b…
A precursor feeding strategy for effective biopolymer producer strain Azotobacter chroococcum 7B was used to synthesize various poly(3-hydroxybutyrate) (PHB) copolymers. We performed experiments on biosynthesis of PHB copolymers by A. chroococcum 7B using various precursors: sucrose as the primary carbon source, vario…
The light gray selenogallate CsGaSe 2 - mC 64 was obtained by reaction of stoichiometric amounts of CsN 3, GaSe, and Se at elevated temperatures. Its crystal structure was determined by single-crystal X-ray diffraction. The compound crystallizes in the monoclinic space group C 2/ c (No. 15) with a = 11.043(2) Å, b = 1…
Due to hydrogen possessing a relatively large neutron scattering length, hydrogen absorption and desorption behaviors in metal thin films can straightforwardly be investigated by neutron reflectometry. However, to further elucidate the chemical structure of the hydrogen absorbing materials, complementary techniques su…
Mixing aqueous silver solutions with aqueous leaf aromatic plant extracts from basil, mint, marjoram and peppermint resulted in the synthesis of quasi-spherical silver nanoparticles in a range of size between 2 and 80 nm in diameter as analyzed by analytical high-resolution electron microscopy. The average size could…
-dioxyselenophene polymer, ProDOT-EDOS, prepared via direct (hetero)arylation polymerization is reported and its optical and electrochemical properties are compared to the all thiophene analog, ProDOT-EDOT, and other relevant dioxythiophene polymers. By substituting the sulfur atom for a selenium atom on one of the mo…