Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
Thin films of zirconium titanate on quartz glass were prepared using radio-frequency magnetron sputter deposition at various substrate temperature (Td from 25 to 450 °C). Crystallinity of the films sets in either at Td=400 °C or after annealing in air up to 650 °C. The refractive index showed monotonic increase with T…
A model is presented to calculate the rate of crack advance in the stepwise decohesion process which can result from the stress-induced penetration of a surface-adsorbed element into a solid, usually along grain boundaries. We call this process dynamic embrittlement. The model employs a diffusion equation containing b…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEvidence for Polyelectrolyte/Ionomer Behavior in the Collapse of Polycationic GelsSerguei G. Starodoubtsev, Alexei R. Khokhlov, Eugene L. Sokolov, and Benjamin ChuCite this: Macromolecules 1995, 28, 11, 3930–3936Publication Date (Print):May 1, 1995Publication History Publish…
The subject of X-ray microscopy (high-resolution X-ray imaging of general nonperiodic structures), an area in which much progress has been made in recent years, is reviewed. The main techniques are briefly described. Achievable performance levels, which for many years were highly speculative, can now be understood wit…
The cavitation corrosion behavior of nickel-aluminum bronze (NAB) was investigated in seawater, using a 20-kHz ultrasonic vibrator. Cavitation tests were made under free corrosion and cathodic protection conditions. Electrochemical measurements were made to elucidate the role of cavitation. The presence of cavitation…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTComposites of Electronically Conductive Polyaniline with Polyacrylate-Silica Hybrid Sol-Gel MaterialsYen Wei, Jui-Ming Yeh, Danliang Jin, Xinru Jia, Jianguo Wang, Guang-Way Jang, Chengchang Chen, and Ronald W. GumbsCite this: Chem. Mater. 1995, 7, 5, 969–974Publication Date…
The current-voltage characteristics and the photoresponse of metal-porous Si–p-type Si heterostructures have been studied. It is shown that the common interpretation of the current-voltage characteristics, which assumes that the current is limited by the Schottky barrier at the metal-porous Si interface, is wrong. An…
The electronic ground state and magnetic properties of the wide-gapped antiferromagnetic insulator ${\mathrm{LaFeO}}_{3}$ have been investigated by $^{57}\mathrm{Fe}$ M\"ossbauer spectroscopy at pressures up to 63 GPa and temperatures of 7--300 K. Two separate magnetic-electronic phase transitions have been identified…
The first part of this paper deals with the justification of B\"assler's phenomenological random-walk model for viscous liquids [Phys. Rev. Lett. 58, 767 (1987)], which considers the random walk of a ``particle'' representing the liquid state on a d-dimensional infinite cubic lattice with site energies chosen randomly…
Measurements of hydrogen loading and unloading in a quasicrystal are reported. The icosahedral phase (i phase) in a Ti-Zr-Ni alloy demonstrates hydrogen absorption from the gas phase at a temperature of 260 \ifmmode^\circ\else\textdegree\fi{}C and a pressure of 40 atmospheres. The incorporation of hydrogen causes the…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMatrix Infrared Spectroscopic and ab Initio Studies of ZnH2, CdH2, and Related Metal Hydride SpeciesTim M. Greene, Wendy Brown, Lester Andrews, Anthony J. Downs, George V. Chertihin, Nino Runeberg, and Pekka PyykkoCite this: J. Phys. Chem. 1995, 99, 20, 7925–7934Publication…
A protein preparation to be used for crystallization should be homogeneous and should remain so throughout the course of a prolonged crystallization experiment. General methods for preparation of pure proteins and for prevention of their covalent modification (through proteolysis, sulfhydryl oxidation, etc.) during pr…
The oxidation process of porous silicon in wet air at 323 K was investigated by infrared spectroscopy, particularly focusing on the behavior of the stretching vibrations of Si‐H. The fine structure of the absorption bands were clarified with help of vibrational analysis by ab initio molecular orbital calculations. Abs…
The biodegradability of poly(tetramethylene succinate) (PTMS), a synthetic aliphatic polyester with a high melting point, was evaluated. The ecological study showed that the distribution of PTMS-degrading microorganisms in soil environments was quite restricted compared with the distribution of microorganisms that deg…
Adhesive properties of trypsin‐modified soy proteins (TMSP) on woods were investigated. A simple method developed in our laboratory, consisting of measuring the force required to shear the bond between glued wood pieces in the Instron universal testing machine, was used to examine adhesive strength of modified soy pro…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTStructural Characterization of Sol-Gel Derived Oxycarbide Glasses. 2. Study of the Thermal Stability of the Silicon Oxycarbide PhaseLaurence Bois, Jocelyne Maquet, Florence Babonneau, and Djamila BahloulCite this: Chem. Mater. 1995, 7, 5, 975–981Publication Date (Print):May…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTEffect of Spacer Length on the Thermal Properties of Side-Chain Liquid Crystal Polymethacrylates. 2. Synthesis and Characterization of the Poly[.omega.-(4'-cyanobiphenyl-4-yloxy)alkyl methacrylate]sAileen A. Craig and Corrie T. ImrieCite this: Macromolecules 1995, 28, 10, 36…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPreparation, Structure, and Mechanical Stability of Alkylsilane Monolayers on MicaXu-Dong Xiao, Gang-yu Liu, Deborah H. Charych, and Miquel SalmeronCite this: Langmuir 1995, 11, 5, 1600–1604Publication Date (Print):May 1, 1995Publication History Published online1 May 2002Pub…
Phase behavior of ethylene oxide (EO)-propylene oxide (PO)-ethylene oxide triblock copolymers in water has been investigated, by using 2H NMR and polarizing microscopy, as functions of both concentration and temperature.Seven copolymers, having wide variations of composition and molecular weight, are used.It has been…
Mathematical Modelling of Solid State Power Sources (J-Y Chern) Silver Ion Conducting Electrolytes (T Takahashi) Copper Ion Conducting Electrolytes (R Linford) Reliability and Clinical Assessment of Pacemaker Power Sources (J Lin & E Schroeppel) Electrochemistry of Conducting Polymers (W H Smyrl) Polymer Synthesis, Pr…