Materials Literature
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Since the interaction forces between solid surfaces in solutions are critical to understand the aggregation-dispersion behavior of colloidal particles in dispersion systems, direct measurements of the interaction forces between surfaces have been conducted in a large variety of systems over a past few decades. Recentl…
Using first-principles plane-wave pseudopotential method, electronic structure of Ga0.5Al0.5As (001), (011) and (111) surfaces are analyzed, result shows that Ga0.5Al0.5As (001)β2(2×4) surface owns the best photoemission properties.
We have constructed structural models of CaO-Al2O3 glasses using combined density functional theory-reverse Monte Carlo simulations and obtained structures that reproduce experimental data（X-ray and neutron diffraction, EXAFS）. The O-Ca and O-Al coordination numbers are similar in the eutectic 64 mol％ CaO（64CaO）glass［…
The emergence of nanoscience and nanotechnology has opened a myriad possibilities to revolutionize a wide range of fields ranging from cosmetics to space technologies; there are also important contributionsto diagnostics and therapeutic practices, especially for treating cancer. Nanoscience is also making a difference…
日本塗料工業会では「環境，安全，健康に関する取り組み」に関する問題を最重要課題として取り上げ，各種自主的取り組みを推進している。塗料・塗装において，環境にやさしく貢献するため，大気汚染低減，省資源，省エネルギー，健康・環境負荷低減，土壌汚染低減など目標に掲げ，環境配慮塗料の開発を行っている。環境配慮塗料は，人や生態，そして地球環境への負荷低減や緩和を行っている。省エネルギーを目的とした環境配慮塗料の最近の動向をタイにおける高日射反射率塗料の実証事業，省エネルギー形の防汚塗料について簡単に紹介する。
Nitrogen-vacancy centers are promising light sources for quantum technology. However, as a major hurdle, their optical emission line exhibits inhomogeneous broadening. We investigate this phenomenon using photon correlation interferometry, hinting towards the underlying mechanisms.
下水道整備の進展に伴い，管路延長は約42万kmにのぼるなど施設ストックが増大している．これに伴い，管路施設の老朽化等に起因した道路陥没も増加傾向にあり，平成21年度の発生件数は約3800箇所にのぼっている．特に，近年，下水道管路施設の老朽化は著しく早急な対策が急がれる．掘削条件や道路交通への影響等々を考慮して，非開削による管更生工法が注目されている．管更生工法は様々な工法が立案されているが，管径がφ800mm未満では自立管タイプの工法が主に採用される．自立管には更生材単独で土圧等の外圧に耐える強度が求められるため，一般に厚みが大きくなり，施工性や断面確保が難しくなるという課題がある．本研究では，土圧等の外圧に耐える高剛性部と地下水…
An equation of state (EOS) of sand deposit subjected to high speed projectile impact is discussed in this study. We first manifest an affinity between the Hugoniot EOS under shock wave transmission and the e-log p relation under quasi-static deformation. Next we construct a set of equations within a framework of Hugon…
Abstrakt Tato bakalařska prace je zaměřena na ověřeni Hall – Petchova vztahu na materialu ER7T, který se využiva pro výrobu železnicnich kol. Teoreticka cast se zabýva způsoby zpevňovani kovů. Podrobně je popsano několik mechanizmů, ktere vedou ke zpevněni materialu, např. dislokacni zpevněni, zpevněni hranicemi zrn n…
Electrochromic iridium oxide thin films were deposited by spray pyrolysis technique onto indium-doped tin oxide (ITO) coated glass substrates using iridium chloride as an aqueous solution. The influence of the substrate temperature, the deposition period of time and the solution molarity have been investigated as rela…
This final report summarizes the progress made during the October 1, 2008 - September 30, 2013 period under Cooperative Agreement DE-NT0004109 for the U. S. Department of Energy/National Energy Technology Laboratory (USDOE/NETL) entitled “Performance Degradation of LSCF Cathodes”. The primary objective of this program…
A type of wideband anti-reflection film in the visible light spectrum from 0.4 μm to 0.8 μm was designed based on a ZF6 substrate,then the coatings were fabricated by Electron Beam Physical Vapor Deposition(EBPVD).Two types of coating materials,titanium oxide(TiO2) and silicon oxide(SiO2),were treated as high index an…
对高温钛合金研究主要包括3个方面,一个是Ti-Al-Sn-Zr-Mo-Si系的近α合金,一个是Ti-Al金属间化合物以及钛基复合材料。主要就Ti-Al-Sn-Zr-Mo-Si系近α高温钛合金,从合金设计原则、各国主要的高温钛合金、600℃高温钛合金的特点、发展高温钛合金的问题及解决的途径、高温钛合金合金化探讨等5个方面进行了综述。
0.11～5.6 mM［Cl－］の溶液中，570 mV vs. SHE定電位保持した13Crステンレス鋼製部品ヘルドの成長性すきま腐食の発生と再不動態化に対する水道水成分である硝酸イオン，硫酸イオンおよび炭酸水素イオン（NO3－，SO42－，HCO3－）の作用を調査した．すきま腐食の発生は，［NO3－］/［Cl－］のモル比≧1または［SO42－］/［Cl－］のモル比＞1にて抑制された．成長性すきま腐食は，［NO3－］/［Cl－］のモル比≧1または［SO42－］/［Cl－］のモル比≧6において再不動態化した．再不動態化に要する時間は，NO3－およびSO42－の添加濃度増加に伴って減少した．HCO3－は，すきま腐食に対する発生抑制およ…
The performances of zinc oxide based thin film transistor(ZnO-TFT)are effected by many factors,such as the qualities of semiconductor active layer and dielectric,and the interface characteristics between active layer and dielectric.Among these factors,the quality of semiconductor active layer is the key factor.However…
In this work, the film thermal conductivity and the film-substrate interfacial thermal contact resistance of vertically-aligned single-walled carbon nanotube (VA-SWNT) films were measured with a proposed method utilizing temperature dependence of Raman spectrum. The proposed method harnesses the excitation laser power…
First principles calculation were performed using Tight-binding LMTO method with Local density approximation (LDA) and Atomic sphere approximation (ASA) to understand the electronic properties of CrH. A pressure induced structural phase transition from cubic to hexagonal structure of CrH is predicted. The stability of…
EST-SSR was used to detect the hereditary difference in wild and cultured populations of the Betaphycus gelatinae,the result showed that nine individuals from each population were used of the 5 EST-SSR primers amplified,a total of 195 reproducible loci ranging from 250 to 2 500 bp were amplified from all the 18 indivi…
We try to use an efficient and accuracy method to describe optical scattering from an isolated crystalline zinc oxide (ZnO) microsphere on a gold substrate. The calculated three-dimensional (3D) microscopic ellipsometry imaging pictures with nanoscale resolution are present. We calculate the Ψ and △ spectra for specul…
In this article, recent advances in computational materials science accelerated by K computer and high-performance computing infrastructures are reviewed. Exponentially growing computer power enables us to develop and apply new methodologies of computer ssimulation, which will realize qualitatively different approach…