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Transient and steady-state multi-wave nonlinear optical properties of liquid crystal film

Miao Ming-chuan、Xu Ze-Da、Hou Gang 等 5 位作者2005-01-01Acta Physica Sinica

Transient and steady-state multi-wave mixing experiments are carried out on the novel azo+c-tube liquid crystal sample. The shape of the diffracted multi-wave consists of rings under Ar+(514.5nm) laser pump light, and th e nonlinear refractive index is n~0.8. Using different polarization states of the pump laser light…

Liquid Crystal Research AdvancementsLaser-Matter Interactions and ApplicationsMolecular spectroscopy and chirality

THERMAL STABILIZATION OF HIGH MOLECULAR WEIGHT L-POLYLACTIDE

Jérôme Burlet、Marie‐Claude Heuzey、Charles Dubois2005-01-01OpenAlex

Polylactide (PLA) polymers are among the most promising plastic made from renewable resources. Thermal stablization of these polymers remains a challenging issue of their industrial processing. We have studied the effect of TNPP in the scope of preventing the molecular weight reduction of PLA at its processing tempera…

biodegradable polymer synthesis and propertiesAdditive Manufacturing and 3D Printing TechnologiesSilicone and Siloxane Chemistry

Trapped Ion Electron Diffraction and Density Functional Theory

Detlef Schooss、Martine N. Blom、Joel H. Parks 等 7 位作者2005-01-01OpenAlex

We report the experimental structure determination of cold, mass selected Ag55 +/- cluster ions using the recently developed technique of trapped ion electron diffraction. By comparison of experimental and theoretical molecular scattering functions and consideration of computed total energies, we show that Ag 55 + con…

Advanced Chemical Physics StudiesNanocluster Synthesis and ApplicationsX-ray Diffraction in Crystallography

Reliability improvement of Cu/low-k interconnects by integrating novel single pass single wafer wet clean

R. Shihman Chang、Jianshe Tang、Steven Verhaverbeke 等 6 位作者2005-01-01OpenAlex

A novel solvent-based single wafer clean process with megasonic feature and single pass fresh solvent spray has been developed This process mitigated the copper undercut problem which existed in the conventional system. The electrical parametric performance meets or outperforms that from the baseline bench process. Mo…

Semiconductor materials and devicesAdvancements in Photolithography TechniquesCopper Interconnects and Reliability

Theory of super-para-electric large polaron for gigantic photo-enhancements of dielectric constant and electronic conductivity in SrTiO3

Yu Qiu、Keiichirō Nasu2005-01-01Journal of Physics Conference Series

In connection with the recent experimental discoveries on gigantic photoenhancements of the electronic conductivity and the quasi-static dielectric susceptibility in SrTiO 3 , we theoretically study a photo-generation mechanism of a charged ferroelectric domain in this quantum dielectric. The photo-generated electron,…

Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesElectronic and Structural Properties of Oxides

XRay Studies of PdAg Membranes for Hydrogen Separation

Laurens C. Witjens、Johannes H. Bitter、A.J. van Dillen 等 6 位作者2005-01-01Physica Scripta

The homogeneity of typical electrolessly plated Pd/Ag membranes for H2 separation was investigated with XAFS and XPS depth profiling. Next the crucial mixing of the separate Pd and Ag layers, obtained after the two sequential plating steps, was followed in situ with XRD. The results show that some low temperature allo…

Advanced Physical and Chemical Molecular InteractionsChemical and Physical Properties of MaterialsMetallurgical and Alloy Processes

Low-Field Transport Model for Semiconducting Carbon Nanotubes

Gary Pennington、Akin Akturk、Neil Goldsman2005-01-01OpenAlex

Transport models for carrier transport in a semiconducting carbon nanotube are presented. Results encompass tubes of varying diameter and chirality. The focus is on transport in response to a small, axially applied electric field. Models for phonon-limited transport are developed whereby carriers scatter with stretchi…

Carbon Nanotubes in CompositesGraphene research and applicationsNanopore and Nanochannel Transport Studies

Research on computational model of iron losses in SPWM fed induction motors

Yunkai Huang、Kunpeng Li、Qiansheng Hu2005-01-01OpenAlex

The iron losses increase when induction motors were supplied by inverter. Based on separated iron losses model, an iron losses computational model considering harmonic component concerning induction motor fed by SPWM inverter was presented through harmonic analysis method. The parameters of the inverter were integrate…

Electric Motor Design and AnalysisMagnetic Properties and ApplicationsElectric Power Systems and Control

Relationship between corrosion behavior and microstructure in an AZ91 magnesium alloy

Masahiro Fukuzaki、Yosuke Tamura、Norio Kôno2005-01-01Journal of Japan Institute of Light Metals

Magnesium alloys are remarkably corroded in chloride environments. The corrosion behavior of the AZ91 alloy is mainly dependent on Fe/Mn ratio and size and distribution of the intermetallic Al-Mn-Fe phase and Mg17Al12 (β-phases) particles. Grain size and heat-treatment condition also influence both the microstructure…

Magnesium Alloys: Properties and ApplicationsAluminum Alloy Microstructure PropertiesAluminum Alloys Composites Properties

Nonlinear optical constants of polymers from molecular hyperpolarizabilities of donor–acceptor molecules

W.S. Verwoerd2005-01-01International Journal of Quantum Chemistry

Abstract A mathematical analysis previously developed to solve the quadratic tensor equations that relate molecular hyperpolarizability and bulk medium nonlinear optical constants is applied to donor–acceptor polyene molecules. The focus is on mutual polarization of spatially organized collections of molecules, e.g.,…

Nonlinear Optical Materials ResearchPhotorefractive and Nonlinear OpticsMolecular spectroscopy and chirality

THE ROLE OF COUPLING AGENTS IN THE FORMATION OF POLYPROPYLENE NANOCOMPOSITES

Shenggong Lei、M.‐T. Ton‐That、Suong V. Hoa 等 5 位作者2005-01-01Canadian Metallurgical Quarterly

The effect of the functionalization of polypropylene by different chemicals on the fabrication and properties of the resulting nanocomposites was studied. Different nanocomposites were prepared using different functionalized polypropylenes (PP) as coupling agents. In order to have better control of the interaction bet…

Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Nanocomposite Synthesis and Irradiation

XAS and XRD Studies on the Structural Changes of NiRaney Catalyst after a Hydrogenation Process

N. Watanabe、Aline Y. Ramos、J. A. M. Ferreira 等 4 位作者2005-01-01Physica Scripta

Ni-Raney catalysts have a sponge-like structure and are largely applied in reactions of organic hydrogenation. The industrial production has the advantages of low cost and simple process, however this catalyst has the inconvenient of the easy deactivation. The understanding of the deactivation mechanism has motivated…

Advanced Chemical Physics StudiesCatalytic Processes in Materials ScienceCatalysts for Methane Reforming

Film-forming Mechanism of Biodegradable Films Prepared from Fish Myofibrillar Proteins

Yusuke Shiku、Patricia Hamaguchi、Wuyin Weng 等 4 位作者2005-01-01NIPPON SHOKUHIN KOGYO GAKKAISHI

In our previous study, semi-transparent and flexible biodegradable films were successfully prepared from myofibrillar proteins of blue marlin meat. The objective of this study was to elucidate the mechanism of film formation. Effect of pH on the amount of surface hydrophobicity and surface SH group in the film-forming…

Meat and Animal Product QualityNanocomposite Films for Food PackagingSilk-based biomaterials and applications

Densification Behavior and Electrical Properties of K 3 Li 2 (Nb 1 - x Ta x ) 5 O 15 Ceramics

Myoung-Sup Kim、Joon‐Hyung Lee、Jeong-Joo Kim 等 5 位作者2005-01-01Integrated ferroelectrics

Tetragonal tungsten bronze structured K3Li2(Nb1 - xTax)5O15(KLNT) (0.0≤x≤1.0) ceramics was synthesized by the solid state reaction method. The sintering behavior, phase development and dielectric characteristics of KLNT ceramics as a function of x (Nb/Ta ratio) were examined. When the content of Ta increased the tempe…

Ferroelectric and Piezoelectric MaterialsAdvanced ceramic materials synthesisMicrowave Dielectric Ceramics Synthesis

THERMOELECTRIC CHARACTERIZATION OF N-TYPE (Bi2Te3)Se3 SEMICONDUCTORS IN A TEMPERATURE RANGE 11-373 K

Raşit Ahıska、Eyüp Güler、Selim Acar 等 4 位作者2005-01-01DergiPark (Istanbul University)

ABSTRACTThe two n-type (Bi2Te3)Se3 semiconductor samples were grown from Bi2Te3 and Bi2Se3 components using traveling heater and pulverized methods. Thermoelectric properties such as electrical conductivity and Seebeck coefficient have been measured in a temperature range 11-373 K using Harman technique. At the room t…

Advanced Thermoelectric Materials and DevicesChalcogenide Semiconductor Thin FilmsThermography and Photoacoustic Techniques

Cyclotron Resonance and Quasiparticles

Marvin L. Cohen2005-01-01AIP conference proceedings

This introductory paper contains personal perspectives about the importance of cyclotron resonance in forming our modern view of solids. The papers following this one will discuss the discovery, refinements, and some of the latest developments. Although I will touch on some of these subjects, I leave the details to th…

Microstructure and mechanical properties

Provenance changes and glauconite formation in the Broken River to Iron Creek/Waipara Greensand Formations marks the late Cretaceous-Eocene transgression.

David Kapoutsos2005-01-01UC Research Repository (University of Canterbury)

Detailed provenance analysis and glauconite morphology of the Broken River and Iron CreeklWaipara Formations and other correlatives were conducted at 6 localities: the MandamusDove River area, Waipara River, Avoca-Iron Creek, Castle Hill Basin, Malvern and Mt Somers. The basal Broken River Formation is a fluvial bould…

Clay minerals and soil interactions

Plasma Etching to Enhance Visibility of Nanoparticles in Nanocomposites

Kunigal Shivakumar、Shivalingappa Lingaiah、Robert Sadler 等 6 位作者2005-01-01OpenAlex

Air plasma etching followed by scanning electron microscope (SEM) imaging technique for visualizing the inorganic nanofillers in polymeric composites is a promising technique for quick screening of exfoliation and dispersion of nanofillers in nanocomposites in manufacturing and materials development environments. The…

Polymer Nanocomposites and PropertiesHigh voltage insulation and dielectric phenomenaPolymer Nanocomposite Synthesis and Irradiation

Effects of Fatty Acids on Growth and Poly-3-hydroxybutyrate Production in Bacteria

K. W. Lo、H. Chua、Hugh G. Lawford 等 5 位作者2005-01-01Humana Press eBooks

The effects of saturated and unsaturated fatty acids (lauric acid, palmitic acid, steric acid, oleic acid, linoleic acid, soybean oil) on Sphaerotilus natans, 0B17 ( Pseudomonas sp.), and recombinant Escherichia coli DH5(/pUC19/CAB were studied. Oleic acid enhances Poly-3-hydroxybutyrate (PHB) production in these thre…

biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionCarbon dioxide utilization in catalysis

Thermal Conductivity Measurements of Nylon 11-Carbon Nanofiber Nanocomposites

Antonette Cummings、Li Shi、Joseph H. Koo2005-01-01OpenAlex

Nylon 11, a popular material for commercial use, has been combined with low-percent loads of carbon nanofibers (CNFs) to tailor mechanical, fire retardancy, and thermal properties. Transmission electron microscopy images show that the CNFs are randomly aligned in the polymer matrix. We show that the thermal conductivi…

Carbon Nanotubes in CompositesThermal properties of materialsFiber-reinforced polymer composites