Materials Literature
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A suitable back layer can improve harvesting of light energy by chang-ing two or more low-energy photons into a single energetic one. Increasing the efficiency of solar cells is essential to make renew-able energy sources compete commercially with petrochemicals. One difficulty is that photovoltaics can only harvest l…
We report a new 1.5 µm passively mode-locked fiber laser incorporating a CNT-doped polycarbonate as a polymer saturable absorber. A 115-fs, 39-MHz soliton pulse was successfully generated with an average output power of 3.4 mW.
The hydroxyl-concentration distributions near the binding interface formed by heating contacted flat surfaces of various kinds of silica glasses at 1150°C were measured. The hydroxyl contents near the binding interface formed by the silica glass plates containing 1150 wt. ppm OH decreased, while those of the OH-free s…
Single crystals of lead chromium phosphate Pb3Cr2(PO4)4 were grown by a flux technique and characterized by X-ray powder and single crystal diffraction, differential thermal analysis, polarized light microscopy and magnetic measurements. Two polymorphic structures have been identified: a monoclinic Pb3Cr2(PO4)4 of spa…
The magnetic superconductor FeSr2YCu2O6+y exhibits superconductivity below 59 K, only when it is properly annealed in a N2 flow and subsequently annealed in an O2 flow and under high O2 pressure. FeSr2LnCu2O6+y (Ln = Nd, Eu, Gd and Tb), where Ln is substituted for Y, was also studied. While FeSr2GdCu2O6+y and FeSr2EuC…
This paper describes the experimental study of impact testing and permeability testing of CFRP laminates for application of propellant tanks considering the reliability of the tank structures associated with foreign object impact damage. Three types of quasi-isotropic laminates with different laminate thickness were p…
The main purposes of this study were to select a photochromic dye and to develop an active welding filter with a photochromic layer. A series of functionalized spirobenzopyranoindolins were synthesized and their photophysical and photochemical properties were investigated in a solution using absorption and emission sp…
The steady shear flow behavior of the electro-rheological (ER) nano-suspensions with different volume fractions of particles (φ) was investigated under no external electric fields. The apparent yield stresses were found for the samples with φ = 2.4 and 8.8 vol%, and they were discussed with the results of the apparent…
The nucleation behavior of an active pharmaceutical ingredient (API) is investigated in semi-batch drowning-out crystallization. A methanol solution of the API was fed in a short period into a well-mixed anti-solvent at low temperature. The effect on nucleation behavior of the amount of seed crystals and concentration…
Films of pure poly(styrene) (PS), pure poly(methyl methacrylate) (PMMA), a 1:1 PS/PMMA blend and a PS-b-PMMA copolymer, were prepared and tested for cell adhesion using L929 mouse fibroblasts. All polymer films were found to be good substrates for cell adhesion and proliferation, and both processes were slightly favor…
Linear Dn−κ detonation shock dynamics (DSD) fitting forms are obtained for four ammonium nitrate‐fuel oil (ANFO) mixtures involving variations in the ammonium nitrate prill properties and ANFO stoichiometries.
The significance and metrological meaning of parameters accessible to regressive estimates from the experimental data on solubility polytherms are refined using corollaries to the universal interrelation between the Gibbs energy, enthalpy, and entropy of dissolution. A standard procedure for processing solubility poly…
Crystal structures of four simple azulene derivatives, 1,3-diheterolyland 1,3-diphenylazulenes, were determined by X-ray diffraction analysis.Three of them showed clear out-of-plane deformation of the azulene ring along its short molecular axis, and one showed a similar but very small deformation.Structural and confor…
Under the framework of Maxwell–Garnett (M-G) model, the optical and electrical properties of single-walled carbon naotube (SWCNT), double-walled carbon nanotube (DWCNT) and hydrogen-doped carbon nanotube (H-doped CNT) in terahertz (THz) region have been investigated. It has been found that as frequency increases the l…
Current-voltage () characteristics of Nandi flame seed cuticles (NFSCs) have been studied as a function of irradiation, annealing, and poling temperature. The cuticles showed memory and threshold switching. Threshold voltage was about 5 V which is almost five times higher than observed in synthetic polymers. The thres…
ステンレス鋼のすきま腐食発生時間tINCUにおよぼす電位と温度の影響を明らかにするために，試験直前に研磨したガラスすきま付き試験片を用いて460 ppm Cl－環境中298 K, 323 Kおよび353 Kの温度で定電位試験を実施した．その結果，いずれの温度においても，卑な電位で電解するほどtINCUは増大し，すきま腐食発生までに必要な電気量QINCUは同一温度であれば電位に対してほぼ一定値となるが，温度が高くなるとQINCUは小さくなる傾向を示した．これは，溶出した金属イオンの加水分解反応速度が温度の上昇にともなって増加しH＋濃度が高くなり，結果的に少ない金属イオン量で脱不動態化pHに達するたかまたは，不動態皮膜の化学的溶解速度…
Using SFM we have observed a peculiar twisting motion of diblock macromolecules pre-collapsed in ethanol vapour during their subsequent spreading in water vapour. The intrinsic asymmetry of the diblock macromolecules has been considered to be the reason for such twisting. Further, friction-deposited PTFE nano-stripes…
Interaction of ozone with microfibrous materials based on polystyrene, acrylonitrile, diacetylcellulose, vinyl chloride and carbon are studied by the methods of IR Fourier and Raman spectroscopy.
Two grades of unstable austenitic stainless steels, AISI 301LN and 201 were tested under uniaxial tension over a wide temperature range (x150xC; 150xC) and a large strain rate range (3.10 x4 s x1 ; 200 s x1 ). A special device was designed to run interrupted tests at high strain rates (50 s x1 & 200 s x1 ). The cpa' p…
Nonlinear mechanical behaviors of unidirectional carbon fiber-reinforced plastic (CFRP) laminates using cup-stacked carbon nanotubes (CSCNTs) dispersed epoxy are evaluated and compared with those of CFRP laminates without CSCNTs. Off-axis compression tests are performed to obtain the stress–strain relations. One-param…