Materials Literature
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Results of sliding wear tests on three alumina ceramics with different grain sizes are discussed in the light of crackresistance (R‐curve, or T‐curve) characteristics. The degree of wear increases abruptly after a critical sliding period, reflecting a transition from deformation‐controlled to fracture‐controlled sulfa…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTCrystal and electronic structures of conductive anion-radical salts, (2,5-R1R2-DCNQI)2Cu (DCNQI = N,N'-dicyanoquinonediimine; R1, R2 = CH3, CH3O, Cl, Br)Reizo Kato, Hayao Kobayashi, and Akiko KobayashiCite this: J. Am. Chem. Soc. 1989, 111, 14, 5224–5232Publication Date (Pri…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFunctionalized polypyrroles. New molecular materials for electrocatalysis and related applicationsAlain Deronzier and Jean Claude MoutetCite this: Acc. Chem. Res. 1989, 22, 7, 249–255Publication Date (Print):July 1, 1989Publication History Published online1 May 2002Published…
Abstract The results of an experimental study of the temperature ( T ) dependent dc conductivity σ dc , T ‐dependent thermoelectric power (TEP), and electron spin resonance in a new conducting polyethylenevinylacetate–polyoctylthiophene (EVAPOT) polymer blend doped with FeCl 3 are presented. For a POT content of 20 wt…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTElectrochemical Surface ScienceCite this: Anal. Chem. 1989, 61, 13, 814APublication Date (Print):July 1, 1989Publication History Published online30 May 2012Published inissue 1 July 1989https://doi.org/10.1021/ac00188a748RIGHTS & PERMISSIONSArticle Views23Altmetric-Citations-…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSinglet molecular oxygen (1.DELTA.gO2) formation upon irradiation of an oxygen (3.SIGMA.g-O2)-organic molecule charge-transfer absorption bandRodger D. Scurlock and Peter R. OgilbyCite this: J. Phys. Chem. 1989, 93, 14, 5493–5500Publication Date (Print):July 1, 1989Publicati…
We show that under compression on a Langmuir trough, a surfactant monolayer may have a mechanical instability similar to the buckling instability of a beam or a plate. In the buckled state, the wavelength of the surface undulations is the capillary length resulting from the balance between gravity and curvature energy…
A bismuth sodium titanate, (BiNa)1/2 TiO3 (BNT)-based solid solutions, (1−x) (BiNa)1/2TiO3 + x(a·SrTi03 +b·PbTiO3 +c·CaTiO3) (a + b + c = l), (BNTX [100x-100a/100b/100c]), were studied for their dielectric, piezoelectric and pyroelectric properties. X-ray diffraction data show that a rhombohedra1 (Fα-tetragonal (Fβ) p…
The intense acoustic wave generated at the focus of an extracorporeal shock wave lithotripter is modeled as the impulse response of a parallel RLC circuit. The shock wave consists of a zero rise time positive spike that falls to 0 at 1 microsecond followed by a negative pressure component 6 microseconds long with ampl…
The roots of the chemistry of conventional rod-like liquid crystals are briefly considered. The low-molecular-weight liquid crystals are analysed in terms of rigid groups (rod-like and disc-like ring systems), flexible groups, polar groups and short, linking segments. On the basis of this analysis, the liquid-crystall…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSolid-state CP/MAS carbon-13 NMR study of cellulose polymorphsAkira Isogai, Makoto Usuda, Takashi Kato, Toshiyuki Uryu, and Rajai H. AtallaCite this: Macromolecules 1989, 22, 7, 3168–3172Publication Date (Print):July 1, 1989Publication History Published online1 May 2002Publi…
The phase, designated as Sm C A * , which shows tristable switching was investigated in C 8 H 17 O– - -COO– -COO * CH(CH 3 )C 6 H 13 (MHPOBC) by means of thermal analyses, a miscibility test and microscope observation. The phase transition from Sm C * to Sm C A * is not observable by AC calorimetry but small peaks com…
At least two antiferroelectric liquid crystalline phases were discovered in MHPOBC. These phases appear below the usual ferroelectric Sm C * phase. Because of the alternation of the molecular tilt directions as well as the dipole orientations in successive layers, the optic axis is along the layer normal. This strong…
Motivated by recent mean-field theories of the structural glass transition and of the Potts glass model we formulate a scaling and droplet picture of an assumed ideal structural glass transition. The phase transition is a random first-order phase transition where the supercooled-liquid phase is composed of glassy clus…
The thermal boundary resistance present at interfaces between helium and solids (Kapitza resistance) and the thermal boundary resistance at interfaces between two solids are discussed for temperatures above 0.1 K. The apparent qualitative differences in the behavior of the boundary resistance at these two types of int…
This book is devoted to the fundamentals of the theoretical analysis of phase equilibrium diagrams. Phase diagrams are known to play an important role in met allurgy and materials science, chemical engineering, petroleum refining, etc. A study of phase diagrams can help in choosing the optimal composition of mixtures…
We report the first explicit measurements on the profile of a spreading edge of nonvolatile liquid, in support of the theory of Hervet and de Gennes on a one-dimensional thin spreading edge. From the laser light interference patterns, the meniscus shape of the edge was reconstructed and the advancing dynamic contact a…
Thin films have been deposited in a ‘‘dual frequency mode’’ plasma, in which differing amounts of radio frequency (rf, 13.56 MHz) power were applied to the substrate, while sustaining the plasma with constant microwave (2.45 GHz) power. We report results pertaining to deposition of silicon oxide and organosilicon thin…
We show that a layer rigidity model which includes the effects of elastic deformations of the host layers can account for the composition dependence of the c-axis lattice expansion of a variety of layered intercalation compounds. Rigidity parameters deduced from this model for each of the three classes of layered soli…
The pressure dependence of the magnetisation of Y 2 Fe 17 , Y 6 Fe 23 and YFe 2 at 4.2 K has been deduced from forced volume magnetostriction measurements in fields up to 12 T. The pressure dependence of the 89 Y hyperfine field in the above compounds and YFe 3 has been measured using NMR. The results are consistent w…