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IR Laser and Heat‐induced Changes in Annulus Fibrosus Collagen Structure

Natalia Ignatieva、О. Л. Захаркина、И. В. Андреева 等 8 位作者2007-05-01Photochemistry and Photobiology

The purpose of this study was to characterize essential changes in the structure of annulus fibrosus (AF) after hydrothermal and infrared (IR) laser treatment and to correlate these results with alterations in tissue state. Polarization-sensitive optical coherence tomography imaging was used to measure collagen birefr…

Tendon Structure and TreatmentLaser Applications in Dentistry and MedicineCollagen: Extraction and Characterization

Stability of Organically Modified Montmorillonites and Their Polystyrene Nanocomposites After Prolonged Thermal Treatment

David J. Frankowski、Michael D. Capracotta、James D. Martin 等 5 位作者2007-05-01Chemistry of Materials

Melt intercalation of montmorillonite (MMT) into polymeric matrices to improve the mechanical properties of polymers has evolved into a subject of tremendous fundamental and technological interest. The thermal treatment experienced during processing or end use can substantially affect the clay and diminish the target…

Polymer crystallization and propertiesPolymer Nanocomposites and Propertiesbiodegradable polymer synthesis and properties

N-Type Field-Effect Transistors Using Multiple Mg-Doped ZnO Nanorods

Sanghyun Ju、Jianye Li、N. Pimparkar 等 6 位作者2007-05-01IEEE Transactions on Nanotechnology

Nanorod field-effect transistors (FETs) that use multiple Mg-doped ZnO nanorods and a SiO2gate insulator were fabricated and characterized. The use of multiple nanorods provides higher on-currents without significant degradation in threshold voltage shift and subthreshold slopes. It has been observed that the on-curre…

ZnO doping and propertiesGaN-based semiconductor devices and materialsGa2O3 and related materials

Synthesis and Characterization of Bismuth Titanate by an Aqueous Sol–Gel Method

Xianfeng Du、Youlong Xu、Hanxiao Ma 等 5 位作者2007-05-01Journal of the American Ceramic Society

A highly stable, reproducible and water‐based bismuth titanate (BTO) sol system has been synthesized by an aqueous sol–gel method. First bismuth nitrate was dissolved in acetic acid, and then it was mixed with a solution of lactic acid dissolved tetra‐ n ‐butyl titanate, subsequently, water was added to adjust sol con…

Bone Tissue Engineering MaterialsFerroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics Synthesis

MRI observation of the light-induced release of a contrast agent from photo-controllable polymer micelles

Martin Lepage、Jinqiang Jiang、Jérôme Babin 等 6 位作者2007-05-01Physics in Medicine and Biology

The encapsulation of molecules into nanocarriers is studied for its potential in delivering a high dose of anticancer drugs to a tumor, while minimizing side effects. Most systems either release their content in a non-specific manner or under specific environmental conditions such as temperature or pH. We have synthes…

Nanoplatforms for cancer theranosticsLanthanide and Transition Metal ComplexesMRI in cancer diagnosis

Diamond Synthesis from Graphite in the Presence of Water and SiO2: Implications for Diamond Formation in Quartzites from Kazakhstan

L. Dobrzhinetskaya、Harry W. Green2007-05-01International Geology Review

Recent studies of microdiamonds from orogenic belts related to continental collisions induced experimentalists to explore new crystallization media possible for diamond synthesis. This has led to considerable progress in diamond-synthesis experiments under high pressures and high temperatures. Diamond was found to gro…

Geological and Geochemical AnalysisHigh-pressure geophysics and materialsDiamond and Carbon-based Materials Research

Control of the cation occupancies of MnZn ferrite synthesized via reverse micelles

Michael D. Shultz、Matthew Allsbrook、Everett E. Carpenter2007-05-01Journal of Applied Physics

Variations in cation occupancy in mixed metal ferrite systems can affect their electronic and magnetic properties. It is known that different synthesis parameters can lead to various cation distributions and the ability to tune these distributions is of great interest. This study uses the extended x-ray-absorption fin…

ZnO doping and propertiesMultiferroics and related materialsMagnetic Properties and Synthesis of Ferrites

Mechanical and Environmental Influences on Stress Corrosion Cracking of an X-70 Pipeline Steel in Dilute Near-Neutral pH Solutions

Bin Fang、En–Hou Han、J. Wang 等 4 位作者2007-05-01CORROSION

Slow strain rate tests (SSRT) were used to investigate stress corrosion cracking (SCC) behavior of an X-70 pipeline steel in a soil solution and NS-4 solution, both saturated with 5% carbon dioxide (CO2)/balance N2 gas mixture at different potentials and strain rates. It was found that transgranular SCC occurred in th…

Corrosion Behavior and InhibitionHydrogen embrittlement and corrosion behaviors in metalsNon-Destructive Testing Techniques

Characterization of a nematic mixture by reversed‐phase HPLC and UV spectroscopy: an application to phase behaviour studies in liquid crystal–CO2systems

Ana R. Brás、Sara Carolina Henriques、Teresa Casimiro 等 8 位作者2007-05-01Liquid Crystals

In the present work a simple but selective reversed‐phase high performance liquid chromatographic method (HPLC) was developed for the analysis of the nematic liquid crystal mixture E7 to determine precisely the composition of the liquid crystal mixture used in PDLC film preparation. Ultraviolet absorption spectrophoto…

Liquid Crystal Research AdvancementsSurfactants and Colloidal SystemsPhotochemistry and Electron Transfer Studies

Room temperature deposition of p-type arsenic doped ZnO polycrystalline films by laser-assist filtered cathodic vacuum arc technique

Clement Yuen、S. F. Yu、Eunice S. P. Leong 等 7 位作者2007-05-01Journal of Applied Physics

The use of combined filtered cathodic vacuum arc (FCVA) technique and laser ablation to fabricate high-quality As doped ZnO (ZnO:As) films at room temperature is proposed. This is possible because FCVA technique is capable of realizing high-quality undoped ZnO films with extremely high resistivity (i.e., extremely low…

ZnO doping and propertiesGa2O3 and related materialsElectronic and Structural Properties of Oxides

Prediction of Yarn Shrinkage using Neural Nets

Jeng-Jong Lin2007-05-01Textile Research Journal

In this study, the shrinkages of warp and weft yarn in the finished woven fabrics can be estimated by neural net. The shrinkages of warp and weft yarn in woven fabrics are affected by various factors such as loom setting, fabric type, and the properties of warp and weft yarns, which are hard to be defined and estimate…

Dyeing and Modifying Textile FibersTextile materials and evaluationsIndustrial Vision Systems and Defect Detection

Azodyes as Photoalignment Materials for Polymerizable Liquid Crystals

O. Yaroshchuk、J. Ho、Vladimir G. Chigrinov 等 4 位作者2007-05-01Japanese Journal of Applied Physics

We demonstrate the excellent photoalignment capability of sulfuric azodyes for polymerizable liquid crystals (PLC) whose anisotropic films are extensively studied as basic elements of many passive optical devices (e.g., retardation films, polarizers, and color filters). These dyes exhibit a high affinity to various su…

Liquid Crystal Research AdvancementsPhotonic Crystals and ApplicationsAdvanced optical system design

27.12 MHz plasma generation in supercritical carbon dioxide

Ayato Kawashima、Hiromichi Toyota、Shinfuku Nomura 等 7 位作者2007-05-01Journal of Applied Physics

An experiment was conducted for generating high-frequency plasma in supercritical carbon dioxide; it is expected to have the potential for applications in various types of practical processes. It was successfully generated at 6−20 MPa using electrodes mounted in a supercritical cell with a gap of 1 mm. Emission spectr…

Carbon Nanotubes in CompositesDiamond and Carbon-based Materials ResearchPlasma Applications and Diagnostics

rf oxygen plasma assisted molecular beam epitaxy growth of BiFeO3 thin films on SrTiO3 (001)

Jiri Vojtech Kabelac、Sujoy Kumar Ghosh、P. S. Dobal 等 4 位作者2007-05-01Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures Processing Measurement and Phenomena

Bi Fe O 3 (BFO) thin films were grown epitaxially by rf oxygen plasma assisted molecular beam epitaxy on SrTiO3 (001) substrates with and without SrRuO3 (SRO) thin film electrodes. BFO thin films show excellent crystalline quality and x-ray diffraction studies show the presence of only one phase. Polarized Raman spect…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAdvanced Condensed Matter Physics

Synthesis and mesomorphic properties of 7‐acyloxy‐3‐(4‐acyloxyphenyl)‐4H‐1‐benzopyran‐4‐one

Guan‐Yeow Yeap、Wan‐Sinn Yam、Masato M. Ito 等 9 位作者2007-05-01Liquid Crystals

A new homologous series of 7‐acyloxy‐3‐(4‐acyloxyphenyl)‐4H‐1‐benzopyran‐4‐ones was synthesized and characterized by elemental analysis and spectroscopic techniques along with thermal behaviour study using differential scanning calorimetry. Texture observation was performed under the polarizing optical microscope from…

Liquid Crystal Research AdvancementsPhotochromic and Fluorescence Chemistry

Grain‐Boundary Diffusion of Cr in Pure and Y‐Doped Alumina

Kwamina Bedu-Amissah、J. M. Rickman、Helen M. Chan 等 4 位作者2007-05-01Journal of the American Ceramic Society

The diffusive transport of chromium in both pure and Y‐doped fine‐grained alumina has been investigated over the temperature range 1250°–1650°C. From a quantitative assessment of the chromium diffusion profile in alumina, as obtained from electron microprobe analysis, it was found that yttrium doping retards cation di…

Advanced ceramic materials synthesisIntermetallics and Advanced Alloy PropertiesAdvanced materials and composites

Spin polarization of Ni2MnIn and Ni80Fe20 determined by point-contact Andreev spectroscopy

Lars Bocklage、Jan M. Scholtyssek、U. Merkt 等 4 位作者2007-05-01Journal of Applied Physics

We present point-contact Andreev reflection (PCAR) spectroscopy on Permalloy (Ni80Fe20) and on the half-metallic Heusler alloy Ni2MnIn. The thin Permalloy films are deposited on Si, the Ni2MnIn films on Si as well as on in situ cleaved (110) surfaces of InAs. A highly conductive layer under the ferromagnetic film almo…

Magnetic properties of thin filmsMagnetic and transport properties of perovskites and related materialsHeusler alloys: electronic and magnetic properties

Bio-nanowebs Based on Poly(styrene-β-isobutylene-β-styrene) (SIBS) Containing Single-Wall Carbon Nanotubes

Yong Liu、Kerry J. Gilmore、Jun Chen 等 5 位作者2007-05-01Chemistry of Materials

Conductive and electroactive nanofibers of SIBS/SWNT can be obtained from SIBS/SWNT dispersions by electrospinning. This useful combination of properties, combined with the compatibility of the SIBS/SWNT fibers with L-929 cells, opens up the possibility of using these materials for studies of the effects of electrical…

Advanced Sensor and Energy Harvesting MaterialsConducting polymers and applicationsElectrospun Nanofibers in Biomedical Applications

Length Dependence of Thermal Conductivity of Single-Walled Carbon Nanotubes

Ruiqin Pan、Zijian Xu、Zhiyuan Zhu2007-05-01Chinese Physics Letters

Dependence of the thermal conductivity on the length of two armchair single-walled carbon nanotubes (SWNTs) is studied by the nonequilibrium molecular dynamics (MD) method with Brenner II potential. The thermal conductivities are calculated for (5, 5) and (7, 7) SWNTs with lengths ranging from 22 to 155 nm. The result…

Carbon Nanotubes in CompositesGraphene research and applicationsThermal properties of materials

Characterization of a Mixed Salt of 1-Hydroxypyridin-2-one Pu(IV) Complexes

Anne E. V. Gorden、Jide Xu、G. Szigethy 等 6 位作者2007-05-01Journal of the American Chemical Society

A single-crystal X-ray diffraction analysis of the mixed salt of hydroxypyridonate Pu(IV) complexes is presented; [Pu(1,2-HOPO) 3 (H 2 O) 2 ·ClO 4 ] [Pu(1,2-HOPO) 4 ] crystallizes in P 2 1 with the asymmetric unit containing two distinct eight-coordinate Pu(IV) complexes, one tris(bidentate) and the other tetrakis(bid…

Metal complexes synthesis and propertiesLanthanide and Transition Metal Complexes