Materials Literature
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Nanocrystalline nickel-molybdenum (Ni-Mo) alloy thin films and nanowires array were synthesized in acidic aqueous solution containing citric acid using an induced co-deposition technique. Cross-sectional scanning ion microscope (SIM) images of the electrodeposits revealed that pure Ni consists of large crystal grains…
The increasing applications of surface-enhanced Raman scattering (SERS) has led to the development of various SERS-active platforms (SERS substrates) for SERS measurement. This work reviews the current optimization techniques available for improving the performance of some of these SERS substrates. The work particular…
Materials with disordered structures have a crucial role in the rapid development of new technologies. Improvement of these materials for particular application, as well as preparation of novel composites is based on a thorough understanding of the basic mechanisms of charge carrier transport. Among various classes of…
We report the synthesis of several unconventional 0-, 1- and 2-dimensional copper sulfide nanostrucutures by the chemical vapor deposition method. The key factor for morphology and structure control of a variety of copper sulfide products is the tuning of deposition and growth temperature to fit for the surface energy…
We synthesized Eu(III) and Sm(III) complexes with tridentate phosphine oxide ligands, Eu(hfa)(3)(TPPM) and Sm(hfa)(3)(TPPM) (hfa: hexafluoroacetylacetonato, TPPM: tris(diphenylphosphinyl)methane), and we then examined their luminescent properties. In the complexes the Eu(III) and Sm(III) centres were fully surrounded…
Molecular design, chemical synthesis, and biological evaluation of several designed organic molecules, which target-selectively degrade proteins upon photo-irradiation, are introduced. The designed molecules for protein photo-degradation include 2-phenylquinoline-steroid hormone hybrids and porphyrin derivatives, both…
Many divertor design studies for future fusion reactors rely on helium gas cooling. In these concepts, pressurized tubes or channels had to be operated at maximum temperatures between 1000 °C and 1300 °C while the lowest operating temperature is preset by the coolant inlet or by specific start-up and maintenance condi…
The toxicity of QD has been extensively studied over the past decade. However, the potential toxicity of QDs impedes its use for clinical research. In this work, we established a preantral follicle in vitro culture system to investigate the effects of QD-Transferrin (QDs-Tf) bioconjugates on follicle development and o…
Protein nanogels were synthesized via a one-step reaction procedure by crosslinking urokinase with benzaldehyde bifunctionalized poly(ethylene glycol). The crosslinked architecture significantly enhances the stability of urokinase against enzyme degradation in comparison with the core–shell structural PEGylated protei…
We present the results based on the electrooptic and dielectric studies in cadmium sulphide (CdS) nanorods/ferroelectric liquid crystal mixtures. Doping of CdS nanorods increases the spontaneous polarization and response time, which due to large dipole-dipole interaction and increase in anchoring energies exists betwe…
The photoluminescence(PL) spectra of ZnCuInS quantum dots(QDs) were measured in the temperature range from 100 to 300 K.The temperature dependences of the PL energy,linewidth,and intensity of the ZnCuInS QDs were investigated in detail.An anomalous increase in band gap of ZnCuInS QDs with temperature was observed.The…
A low-cost and effective method to fabricate hexagonally patterned urchin-like ZnO nanowire arrays was demonstrated.The ordered monolayer of polystyrene(PS) spheres is obtained by self-assembly,and the monolayer is used as a template to grow ZnO nanowires with complex hierarchical structures via hydrothermal method.Th…
采用热溶剂法制备了NaYF4∶Tb^3＋,Er^3＋六角相纳米粒子,分析了合成条件对六角相粒子形成的影响。较高的反应温度有利于六角相NaYF4晶体的形成。实验结果表明：六角相是热力学更稳定和更有序的结构,从立方相到六角相的转变是从无序到有序结构的转变。随着尺寸的减小,纳米粒子的下转换效率明显降低。为进一步比较,制备了NaYF4∶Tb^3＋,Er^3＋核壳结构的纳米粒子。包覆后的纳米粒子的下转换效率明显提高,其原因是包覆减少了表面缺陷进而降低了表面激发能量的猝灭。
Benzoic acid(BA) ligand was bonded on the side chains of polysulfone(PS) via a polymer reaction and obtained aryl carboxylic acid-functionalized polysulfone PSBA.The secondary complex PS-(BA)3-Tb(Ⅲ),the ternary complexes PS-(BA)1-Tb(Ⅲ)-(Phen)2 and PS-(BA)1-Tb(Ⅲ)-(Phen)3 were prepared by the coordination of Tb(Ⅲ) ion a…
Thin films of TiO 2 have been deposited on to cleaned glass substrate by sol gel spin coating method. The XRD analyses confirm different crystalline phases of TiO 2 thin films. The grain size calculated by the help of Scherer’s formula and found to be 23nm, 37nm and 54 nm respectively for TiO 2 (004), TiO 2 (200) and…
PbTe thin film were synthesized using thermal evaporation and irradiated by 100 MeV Ag ions at different fluences ranging from 3×1013 and 1×1014 ions/cm2. Pristine films annealed under Ar atm at 250 °C for 1 hr. X-ray Diffraction (XRD) of pristine and irradiated films reveals the improvement of PbTe phase with increas…
This article describes the alumina ceramic mixed with two kinds of additives in order to improve the performance of ceramic, such as mixed with submicron ZrO2 and Nano-SiC. The main use of monoclinic zirconia (m-ZrO2) and tetragonal zirconia (t-ZrO2) of reversible phase transition of volume change and use of nano-SiC…
According to a tight-binding model and the Green's function formalism, we investigate the electronic transport in hybrid contact of doubly stacked zigzag graphene nanoribbons. Our study shows that the next nearest neighbor interlayer coupling, the hybrid contact length and gate voltage each have a significant modulati…
温度，湿度，炭酸ガス濃度の養生条件を要因として，異なる3種類のセメント系結合材を用いたモルタルを促進炭酸化養生し，各種物性を取得した．その結果，配合によって炭酸化深さが大きくなる養生条件が異なり，炭酸ガス濃度の増大によって炭酸化深さが減少する場合があることを示すとともに，γ-2CaO.SiO2を含むモルタルは炭酸ガス濃度が高いほどCaCO3の生成量が多くなり，空隙を充填する効果が大きくなることを明らかにした．さらに，実験結果をふまえてトリチウム水を対象として物質遮断性を試算した結果，炭酸ガス濃度が高いほど物質浸透量は少なくなることを示した．
Graphene oxide (GO) monolayers were transferred onto SiO2/Si substrates by Langmuir-Blodgett (LB) technique and were converted to reduced graphene oxide (RGO) by exposure to hydrazine vapors followed by various durations of heat treatment at 400 °C in Ar atmosphere. Bottom gated FETs were fabricated with LB grown mono…