Band gap tuning in Zn1-xAlxO (0
The tunable optical band gap in the Zn1-xAlxO thin films fabricated via Pulsed Laser Deposition (PLD) technique is reported.. A blue shift in the optical band gap in the thin films was observed with increase in x.
Materials Literature
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The Relations between Sintering Conditions and Magnetic Properties of SrMg2W – type Ferrites Prepared by Spark Plasma Sintering Method
The effects of sintering condition to magnetic properties of the SrMg2W–type ferrite (SrMg2Fe16O27) prepared by the Spark Plasma Sintering (SPS) method were investigated. SrMg2W–type ferrite powders with average particle sizes of 0.43 µm were prepared by iron ball-milling for 10 hours. Some kinds of SrMg2W–type ferrit…
Corrosion protection performance of cathodically protected oil and gas pipeline coatings around the transition temperature
Oil and gas pipelines are susceptible to corrosion by reacting with their environments. Water, oxidants, acids, and alkalis can act aggressively on the steel substrate. Over the years, corrosion has been the cause of many catastrophes. Thus, to prevent or slow down corrosion from taking place on steel substrate two te…
Polystyrene Flame Retardant: Effect of Addition of Layered Double Hydroxides of Magnesium and Aluminum by Solubilization in Chloroform
In this work it was possible to evaluate flame retardant properties of the composite polystyrene PS-layered double hydroxide (LDH) [Mg 4 Al 2 (OH) 14. 3H 2 O], prepared by addition of the inorganic material via solubilization of polystyrene with chloroform. LDH Mg-Al was synthesized by coprecipitation method and chara…
The Elastomeric Material for Rotational Molding
Rotational molding has several advantages, such as suitable for small-lot manufacturing and will be needed for the 21st century. In this paper, after describing briefly the feature and the molding materials used for rotational molding, PP wax is taken up as one example of developing elastomeric materials. Research and…
Изделия цветных металлов из раскопок Шиховского могильника (результаты рентгеновского микрозондового анализа)
The results of X-ray microprobe (spectral) analysis of non-ferrous metal products have been published in the article. Alloy groups were reviewed. The comparison with the data of study of chemical composition of metal products from adjacent territories was presented.
Blue-Violet GaN-based photonic crystal surface emitting lasers
We experimentally and theoretically investigate the optical properties of GaN-based photonic crystal surface emitting lasers( PCSELs). We discuss the effects of lattice constant,boundary shape,and lattice type of photonic crystal( PC) on lasing characteristics. The PCSEL structures are fabricated using the metal-organ…
Каспаза-3 и калпаин: разнонаправленное участие в пресинаптической долговременной пластичности
В поле СА1 переживающих срезов гиппокампа крыс исследовали влияние протеолитических ферментов каспазы-3 и калпаина на динамику LTP-зависимых модификаций парной пластичности. Измерение парной фасилитации (PPF) производилось в течение часа после высокочастотного раздражения коллатералей Шаффера (100 Гц, 1 с). При индукц…
Electroluminescent Performances of Red Phosphorescent Iridium Complexes with Carrier Groups
Polymer light-emitting diodes( PLEDs) with device structure of indium tin oxide( ITO) /poly( 3,4-ethylenedioxylenethiophene) ∶ poly( styrenesulphonic acid)( PEDOT∶ PSS) /emissive layer /tris( 8-hydroxyquinolinato) aluminum( Ⅲ)( Alq3) /lithium fluoride( LiF) /Al were fabricated by solution procedures to obtain highly e…
CaSi_n（n=1～10）团簇结构、稳定性与光谱性质的理论研究
利用密度泛函理论（DFT）中的B3LYP方法,在6-311G（d）基组的水平上系统研究了CaSin（n=1-10）团簇的几何构型、稳定性与光谱（红外与拉曼）性质.研究结果表明,CaSin团簇构型是在CaSin-1构型上戴帽1个原子而形成的;当n≥4,CaSin团簇的最低能量结构均为立体构型;Ca原子的掺杂降低了体系的化学稳定性;CaSi3与CaSi5是幻数结构;在相同的观察频段内,CaSi3团簇的红外与拉曼活性在低频段均表现较好,而在高频段拉曼活性则表现较差,与之不同的是CaSi5团簇的红外与拉曼活性在整个频段内都表现的较好.
Electrochemical Preparation of Titanium Dioxide Thin Films for Dye-Sensitized Solar Cells
色素増感太陽電池（DSSC）は，次世代太陽電池として，実用化に向けた検討が進められている。酸化チタン膜はDSSCにおいて，色素を吸着保持し，色素の光吸収によって励起した電子を取り出すための電極として用いられており，非常に重要な部材である。電解析出法は，目的とする基板を電極として，外部電源を用いて電気化学反応を起こして膜を形成する方法であり，低コストで低環境負荷なプロセスである。本稿では，電解析出法について，筆者らが手掛ける酸化チタン膜の作製を紹介し，膜のDSSC用電極への応用について解説する。
BLUNT CRACK-TIP ELASTOPLASTIC ZONE OF MIXED MODE FRACTURE
这篇文章在混合模式装载下面在 elastoplastic 材料在一个钝裂缝的尖端讨论破裂过程地区的描述。分析为预言裂缝生长方向在钝裂缝建议附近包括对 elastoplastic 地区几何学的描述。出现在裂缝前面的使变形的地区被基于在异乎寻常的粘性的框架以内掉落的 subloading 表面概念介绍一个标准描述。混合模式裂缝宣传 elastoplastic 区域的最小的价值。现在的答案被归结为以前在文学报导的那些，当有弹性的非常塑料的材料被考虑时。
Электрохимическое определение кадмия и свинца с использованием совместных эффектов усиления от SBA-16 и иодида
Мезопористый оксид кремния SBA-16 синтезировали с использованием тетраэтоксисилана в качестве источника кремния и тройной системы, состоящей из ПАВ F127, воды и бутанола. Благодаря благоприятным свойствам SBA-16 (большая площадь поверхности и хорошая способность к накоплению), на электроде из угольной пасты, модифицир…
Air-Stable Cyclohexasulfur in Cocrystal
A new air-stable cyclohexasulfur（cyclo-S6）was discovered in the crystal of 3,5-diphenyl-1,2,4-dithiazol-1-ium（dpdti）iodide, formed by cocrystallization. The dpdti was synthesized via an oxidation reaction of thiobenzamide with iodine in benzene. Two kinds of crystal habits—brock-shaped（crystal-A）and needle-shaped（crys…
Functionally Graded Martensitic Stainless Steel
Functionally graded materials (FGM) are defined as an anisotropic material whose physical properties vary continuously throughout the volume, either randomly or strategically, to achieve desired characteristics or functionality. The aim of this project is to perform a modal analysis to determine the natural frequencie…
Surface Science for Resource Applications
工業国である我が国にとって，資源問題は非常に重要である。日本表面科学会の学会誌「表面科学」では，2014 年は「資源問題と表面科学」をテーマとして連載してきた。本企画の最後となるここでは，連載してきた我が国の資源問題，元素戦略，資源問題の解決について総括を行いたい。
Continuous and Discontinuous aTi Layers Between Grains of b(Ti,Co) Phase
The microstructure of Ti-Co polycrystals with 1.6 and 3.2 at.% Co has been studied between 690 and 810 C after long anneals (720-860 h) in the aTi+b(Ti,Co) two-phase area of the Ti-Co phase diagram. It has been observed that depending on the annealing temperature and GB energy, the aTi phase forms either chains of sep…
Isotropic perfect absorber in optical frequencies using vertical split-ring resonators
Plasmonic metamaterials are composed of artificial metamolecules exhibiting unusual optical properties such as negative refraction index, and toroidal dipolar response that can lead to applications that are otherwise unattainable in nature, such as sub-diffraction imaging, and optical and spectrum manipulation.
Adsorption of Pyrene on Carbon Nanotube:Energetics and Dynamics
We studied the adsorption and dynamical behavior of pyrene molecules on single-wall carbon nanotubes (CNT), using both first-principles density functional theory (DFT) and classical molecular dynamics methods. For the energetics, the van der Waals corrected DFT-D2 method was used to determine the stable adsorption sit…
Plasmonics: Quantum on the Angstrom Scale, as Observed by Surface-enhanced Raman Scattering
We fabricate plasmonic dimers consisting of two metallic nanostructures spaced by a few angstroms using lithographic methods, and show that quantum mechanical tunneling across the gaps limits the enhancement in surface-enhanced Raman scattering.