Materials Literature
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Using density functional theory we examine the crystal structure and the finite-temperature thermodynamics of formation and dehydrogenation for the quaternary hydride ${\mathrm{Li}}_{4}{\mathrm{BN}}_{3}{\mathrm{H}}_{10}$. Two recent studies based on x-ray and neutron diffraction have reported three bcc crystal structu…
A systematic study of the impact of annealing on the electronic properties of single InAs/GaAs quantum dots (QDs) is presented. Single QD cathodoluminescence spectra are recorded to trace the evolution of one and the same QD over several steps of annealing. A substantial reduction of the excitonic fine-structure split…
BACKGROUND: In preclinical studies, lysolipid-based temperature-sensitive liposomes (LTSLs) containing chemotherapy drugs administered in combination with local hyperthermia have been found to increase tumor drug concentrations and improve antitumor efficacy of the drugs. We used a novel magnetic resonance imaging (MR…
Even though graphene is a low-energy system consisting of a two-dimensional honeycomb lattice of carbon atoms, its quasiparticle excitations are fully described by the $(2+1)$-dimensional relativistic Dirac equation. In this paper we show that, while the spin-orbit interaction in graphene is of the order of $4\phantom…
Effects of the solid solution and aging treatment on microstructure, hardness and electrical conductivity of the Cu alloy containing 1.1 wt% Cr were investigated. The Cu-Cr alloy contains Mn as an alloying element. The horizontal continuous casting process was applied to obtain the unidirectionally solidified billets.…
Al-doped ZnO (AZO), Ga-doped ZnO (GZO), and GZO/AZO thin films were deposited on polymer (PET) substrates with and without a ZnO buffer layer by using an r.f. magnetron sputtering technique and their structural, electrical, and optical properties were investigated to develop transparent conductors for flexible display…
Stable icosahedral quaicrystals (i-QC) have been identified in a large number alloys. Stability of the i-QCs has been understood in terms of Hume-Rothery rules i.e., atomic size factor and valency electron concentration (e/a) . The stable i-QCs are electron compounds which have strict e/a, and hence most stable i-QCs…
Stress corrosion cracking (SCC) is one of the major reasons to reduce the reliability of aged reactor components. Toshiba has been developing underwater laser welding onto surface of the aged components as maintenance and repair techniques. In this report, the underwater laser patch welding is examined and presented.
Solidification morphology in high rate is studied in the constrained solidification of organic material. Tip radius of curvature of needle crystal has decreased with growth rate by power -1/2, irrespective of interfacial shape, dendrite or cellular. Primary arm spacing of needles has decreased with growth rate, and it…
TiNHX1, homologous with the TaNHX1 gene encoding a vacuole Na+/H+ antiporter was cloned from Elytrigia intermedia by RT-PCR, with primers designed according to the sequence of TaNHX1. The largest open reading frame of TiNHX1 gene has 1 641bp in length and encoded a protein of 546 amino acid residues. The estimated mol…
A program is under way at Argonne National Laboratory to evaluate the resistance of Ni alloys and their welds to environmentally assisted cracking in simulated Light Water Reactor (LWR) coolant environments. This paper focuses on the cracking behavior of Ni-alloy welds in simulated pressurized water reactor (PWR) envi…
非相溶二成分系ポリマーブレンドとしてナイロン 6(PA)/スチレン-アクリロニトリル共重合体(SAN)系および PA/ポリスチレン(PS)系ブレンドを溶融混練により調製した．これらブレンドにおける共連続相構造の形成に及ぼす成分ポリマーおよびブレンドのレオロジー特性，成分ポリマー間の界面張力およびブレンド組成の影響を調べた．PA/SAN 系では粘弾性測定およびブレンド試料中の成分抽出実験から評価した共連続相構造を形成するブレンド組成領域はよく一致した．PA/SAN および PA/PS 系ブレンドにおける共連続相構造を形成するブレンド組成は，これまでに提案された半経験則および理論式から精度よく予測することはできなかった．共連続相構造に…
The vast gap between the molecular dynamics (MD) and experimental time scales poses serious problems to direct comparison between the MD simulation and experimental results. The inability of the traditional MD simulation methods to model long enough time scales also results in modeling unrealistically high loading rat…
Metamaterials are expected to open a gateway to unprecedented electromagnetic properties and functionality unattainable from naturally occurring materials. We review this new emerging field and recent progress in demonstrating metamaterials in the optical range. Article not available.
When decommissioning nuclear installations, large quantities of metal components are produced as well as significant amounts of other radioactive materials, which mostly show low surface contamination. Having been used or having been brought for a while in a controlled area marks them as ‘suspected material’. In view…
We report developments in real-time deposition control of the fabrication of broadband multilayer optical designs with demanding specifications. A combination of real-time ellipsometric monitoring and automated deposition control was used to achieve the required performance.
For centuries silk had a reputation as a luxurious and sensuous fabric, and been associated with wealth and success. It is one of the oldest textile fibers known to man. It has been used by the Chinese since the 27th century BC. This fiber is sensitive to UV radiation and sun light can damage it. So, designing and mod…
In surface analysis such as AES (Auger electron spectroscopy) or XPS (x-ray photoelectron spectroscopy), ion sputtering is generally used in order to remove contaminated layers and to perform an in-depth profiling. It is important to align an ion beam at an analysis area and to estimate sputtering rates prior to an ac…
Mullite exhibits low dielectric constant, high strength and relatively low thermal expansion coefficient, and therefore, is useful as a substrate for high-speed computer. Mullite is also a candidate material for high-performance low-temperature co-fired ceramic (LTCC) substrate because of the same reasons mentioned ab…
This paper presents the design and realization of an imaging system intended for use as a reference method for the accurate measurement of cotton fiber length. The prototype system is composed of an off-the-shelf scanner that generates a grayscale image of multiple individualized fibers, followed by customized image p…