Materials Literature
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A new image contrast is reported for LSIs covered with an insulator film in a low accelerating voltage scanning electron microscope. The surface region above the conducting lines is often observed brighter than that without conducting lines. This contrast is quasi-stationarily observed contrary to well-known capacitiv…
The responses of symmetric square and triangular wave pulses have been investigated in planar cells of two ferroelectric liquid crystalline mixtures FLC-6430 and SCE-13 in the SmC*phase. The samples were sandwiched between two parallel polyimide coated substrates. The cells containing SCE-13 and FLC-6430 were consider…
Powder neutron diffraction measurements were performed on an antiferromagnetic manganese sulfide BaLa2MnS5 at 7 and 100 K. This sulfide has a tetragonal nuclear structure with space group I/mcm. The neutron diffraction data at 7 K show a collinear antiferromagnetic structure (space group I) with a propagation vector k…
A simple porous silicon texturing technique that is applicable to various kinds of silicon material, including multicrystalline and ribbon Si, of any doping type and level is used to fabricate solar cells. Acidic etching of Si leads to a homogeneous porous silicon (PS) surface layer with reflectance as low as 9%. Phos…
Styrene and maleic anhydride (MAn) were successfully grafted, alone and simultaneously, onto various model hydrocarbon substrates at 180 °C with 2,5-dimethyl-2,5-di-(t-butyl peroxy)hexane (L101) as a free-radical initiator. Dodecane, 1-dodecene, and 2,6,10,14-tetramethylpentadecane were selected as model compounds to…
An analytical technique is developed for predicting the performance of a bonded Halbach oriented anisotropic magnet, with due account of partial alignment of the NdFeB powder during injection molding. The predicted performance of a 12-pole injection molded, Halbach oriented magnet is compared with measurement.
In succession to our work on aluminium films a systematic database of thin-film measurements on palladium films by electron probe microanalysis is presented. This time the measurements were performed at accelerating voltages between 4 and 30 kV, again on films of six different nominal thicknesses, ranging from 100 to…
β‐aluminas were successfully synthesized by direct solid‐phase reaction. Contrary to other β‐aluminas. Srβ‐alumina doped with showed two strong phosphorescent peaks at 482 and 502 nm, which were different from the peak of fluorescence (465 nm). These phosphorescent peaks were dependent on the excitation wavelength. Th…
Careful hydrolysis of a pentacoordinate chlorosilane gives a pentacoordinate protonated silanol that resembles the intermediate in the aqueous hydrolysis of silanes.
Polarization selective grating elements are fabricated on azopolymer film by superposing an interference pattern due to +45 : −45 ° polarized light beams. The transmission type grating shows unique features due to the simultaneous presence of bulk birefringence grating and surface relief grating. The birefringence gra…
B-site cation arrangement and crystal structure in the layered perovskite compounds CsLa2Ti2NbO10 (Ln = La, Pr, Nd, Sm) and CsCaLaTiNb2O10 have been investigated by the Rietveld analysis of the powder X-ray diffraction patterns, lattice energy calculations, and intercalation reactions. In CsLa2Ti2NbO10, equal numbers…
Thermoelectrets of poly(vinyl chloride) (PVC) and poly(ethyl methacrylate) (PEMA) blends were prepared using the conventional thermal poling method. α-Relaxation in this polyblend was investigated using thermally stimulated depolarization currents (TSDC). The global spectra of the polyblends revealed that the two poly…
A reactive extrusion process was developed to toughen an amorphous copolyester (PETG) of ethylene glycol, terephthalic acid and 1,4-cyclohexanedimethanol using either a maleic anhydride grafted polyethylene–octene elastomer (POEg), or a maleic anhydride grafted mixture (TPEg) of the polyethylene–octene elastomer and a…
The calorimetric characteristics of carbon black (CB)/poly(ethylene-co-alkyl acrylate) composites depend on both the CB and acrylate contents. An increase of the acrylate content in the pure copolymers tends to decrease all the crystalline characteristics: Tc,n, the nonisothermal crystallization temperature; Tm, the m…
A novel supramolecular liquid-crystalline polyurethane was prepared by mixing the polyurethane containing a pendant pyridyl unit as H-bond acceptor and 4-dodecyloxybenzoic acid as H-bond donor. Intermolecular hydrogen bond formation was confirmed by Fourier transform infrared spectroscopy. The liquid-crystalline behav…
Organic chemistry performed at the solid–liquid interface allowed us to achieve the selective chain-end functionalization of poly(ethylene terephthalate) (PET) membranes and films with perfluorinated labels. The carboxyl endings were activated with water-soluble carbodiimide and were coupled to 3,5-bis(trifluoromethyl…
Poly(butylene terephthalate) (PBT) and acrylate rubber (ACM) were melt-blended in a Brabender Plasticorder at 220°C and 40 rpm rotor speed. The blends were dynamically vulcanized by the addition of hexamethylenediamine carbamate (HMDC) during the melt-blending operation in the Brabender. Dynamic mechanical thermal ana…
Probed length scales of submicrometre dimensions have been achieved in x-ray photoelectron spectroscopy using synchrotron light sources. This has contributed to advancing the frontiers of surface and interface research, providing spatially resolved information for complex heterogeneous systems. This paper overviews th…
The EPR silent acetated 54-member crown-shaped polyoxomolybdate Na26[{Na(H2O)2}6( {μ3-OH)4MoV20MoVI 34- O164(μ2-CH3COO)4}] ·≈120H2O (1), constructed from two different but related building blocks in a new mode, is synthesized in high yield by reducing an acidified aqueous solution of Na2MoO4·2H2O and CH3COONa·3H2O.
Conversion coatings for magnesium have traditionally been based on immersion treatment in the solution containing hexavalent chromium compounds. The excellent performance of these coatings as paint bases has been established in a broad range of application. However, the replacable surface treatment has been strongly e…