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Fabrication and Characterization of High‐ k Dielectric Nickel Titanate Thin Films Using a Modified Sol–Gel Method

Shiow‐Huey Chuang、Min-Lung Hsieh、Shih‐Chieh Wu 等 6 位作者2010-09-01Journal of the American Ceramic Society

This research produced high‐quality, single‐phase nickel titanate (NiTiO 3 ) thin films, a high‐ k material for gate dielectrics, by a modified sol–gel method. The precursor was prepared by reactions of nickel acetate tetrahydrate and titanium isopropoxide in 2‐methoxyethanol with a 1:1 ratio of Ni/Ti in the solution.…

Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesTransition Metal Oxide Nanomaterials

Electromagnetic wave absorption properties of carbon nanotubes-epoxy composites at microwave frequencies

Zhuocheng Ye、Z. Li、James A. Roberts 等 6 位作者2010-09-01Journal of Applied Physics

This paper focuses on the absorption properties of electromagnetic waves, both electric and magnetic, from multiwalled carbon nanotubes (MWCNTs)-epoxy composites. A microwave resonant cavity was utilized as a probe. Six groups of MWCNT-epoxy composite samples with different MWCNT outside diameters (ODs) were fabricate…

Electromagnetic wave absorption materialsAdvanced Antenna and Metasurface TechnologiesFiber-reinforced polymer composites

Polarization and Piezoelectric Properties of High Performance Bismuth Sodium Titanate Single Crystals Grown by High-Oxygen-Pressure Flux Method

Muneyasu Suzuki、Akifumi Morishita、Yuuki Kitanaka 等 5 位作者2010-09-01Japanese Journal of Applied Physics

(Bi 0.5 Na 0.5 )TiO 3 (BNT) single crystals were grown by flux method at a high oxygen pressure ( P O 2 ) of 1 MPa, and their polarization and piezoelectric properties were investigated. BNT single crystals exhibited a saturated polarization hysteresis with remanent polarizations ( P r ) of 31 µC/cm 2 along [100] c ,…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies

Alkoxy Tail Length Dependence of Gelation Ability and Supramolecular Chirality of Sugar-Appended Organogelators

Jiaxi Cui、Yijun Zheng、Zhihao Shen 等 4 位作者2010-09-01Langmuir

A series of sugar-appended organogelators, 4-(4'-alkoxyphenyl)phenyl-β-O-D-glucoside (GBCn, where n = 1-12 denotes the number of carbon atom in the tail), are synthesized to elucidate the effect of terminal chain length on their gelation and chiral expression abilities in gels. In the mixture of H(2)O/dioxane (60/40 v…

Carbohydrate Chemistry and SynthesisSupramolecular Self-Assembly in MaterialsPolydiacetylene-based materials and applications

Applications of Microstructured Silicon Wafers as Internal Reflection Elements in Attenuated Total Reflection Fourier Transform Infrared Spectroscopy

H. Ralph Schumacher、U. Künzelmann、B I Vasil'ev 等 5 位作者2010-09-01Applied Spectroscopy

A novel internal reflection element (IRE) for attenuated total reflection Fourier transform infrared (ATR-FT-IR) spectral acquisition is introduced and applied for several surface-sensitive measurements. It is based on microstructured double-side-polished (100) silicon wafers with v-shaped grooves of {111} facets on t…

Thin-Film Transistor TechnologiesSilicon and Solar Cell TechnologiesSilicon Nanostructures and Photoluminescence

Shape of the Q band in the absorption spectra of porphyrin nanotubes: Vibronic coupling or exciton effects?

Anna Stradomska、Jasper Knoester2010-09-01The Journal of Chemical Physics

Absorption and linear dichroism spectra of self-assembled tubular aggregates of TPPS(4) porphyrin are studied theoretically with special emphasis on the low energy part of the spectra (the Q band region) where the coupling with intramolecular vibrations is pronounced. The model Hamiltonian includes both the excitonic…

Organic Electronics and PhotovoltaicsPorphyrin and Phthalocyanine ChemistrySupramolecular Self-Assembly in Materials

Dielectric and piezoelectric properties of Ba(Zr xTi1-x)O3 lead-free ceramics

Wei Li、Zhijun Xu、Ruiqing Chu 等 5 位作者2010-09-01Brazilian Journal of Physics

Lead-free ceramics Ba(Zr xTi1-x)O3 (x = 0.02-0.2) were prepared using a solid-state reaction technique. The structural and electrical properties were systemically investigated. Crystalline structures and microstructures were analyzed by X-ray diffraction and scanning electron microscope (SEM) at room temperature. All…

Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis

Raman Spectra Study of K0.5Na0.5NbO3 Ferroelectric Thin Films

Chang Won Ahn、Hak-In Hwang、Kwang Sei Lee 等 10 位作者2010-09-01Japanese Journal of Applied Physics

We have fabricated K 0.5 Na 0.5 NbO 3 (KNN) thin films on Pt substrates by a chemical solution deposition method and investigated the effect of K and Na excess (0–30 mol %) for KNN thin film. The KNN film with 20 mol % excess K and Na was an optimized KNN perovskite phase. From the Raman spectra, a change in the scatt…

Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis

Specific features of the formation of the microstructure of titanium nickelide upon thermomechanical treatment including cold plastic deformation to degrees from moderate to severe

С. Д. Прокошкин、Vladimir Braïlovski、Andrey Korotitskiy 等 5 位作者2010-09-01The Physics of Metals and Metallography

X-ray diffraction, electron microscopy, microhardness measurements, and differential scanning calorimetry have been used to investigate the formation of the dislocation substructure and nanocrystalline and amorphous structures in Ti-Ni shape-memory alloys depending on the degree of cold deformation by rolling and post…

Shape Memory Alloy TransformationsTitanium Alloys Microstructure and Properties

Piezoelectricity of Poly(L-lactic Acid) Composite Film with Stereocomplex of Poly(L-lactide) and Poly(D-lactide)

Tetsuo Yoshida、Kenji Imoto、Komei Tahara 等 9 位作者2010-09-01Japanese Journal of Applied Physics

The piezoelectricity of a film of the eco-material poly(L-Lactic acid) (PLLA) with high transparency and flexibility has been noted for its possibility of application to new types of devices used in mobile equipment. However, for its application, there are many difficult problems to be solved, because the PLLA film ha…

Advanced Sensor and Energy Harvesting MaterialsNanocomposite Films for Food Packagingbiodegradable polymer synthesis and properties

Safety of Gadoterate Meglumine (Gd-DOTA) as a Contrast Agent for Magnetic Resonance Imaging

Tsuneo Ishiguchi、Shoki Takahashi2010-09-01Drugs in R&D

BACKGROUND: Safety is a primary concern with contrast agents used for MRI. If precautions could be taken before the repeated administration of gadolinium-based contrast media, then the awareness and management of adverse reactions would be more efficient. OBJECTIVES: To assess the safety and efficacy of gadoterate meg…

Advanced MRI Techniques and ApplicationsAcute Kidney Injury ResearchLanthanide and Transition Metal Complexes

Dust creation and transport in MAST

G. De Temmerman、M. Bacharis、J. Dowling 等 4 位作者2010-09-01Nuclear Fusion

In this contribution, we report on experiments performed in MAST to investigate dust creation, transport and influence on plasma performance. The exceptional diagnostic access of MAST allows stereoscopic imaging of dust particles' motion in both the divertor and the main chamber, utilizing fast infrared cameras. This…

Magnetic confinement fusion researchFusion materials and technologiesNuclear Materials and Properties

Luteinizing hormone-releasing hormone receptor-mediated delivery of mitoxantrone using LHRH analogs modified with PEGylated liposomes

Linhua Zhang2010-09-01International Journal of Nanomedicine

A sterically stabilized, mitoxantrone-loaded liposome, tailored to target luteinizing hormone-releasing hormone (LHRH) receptor overexpressing cells, was developed to promote the efficiency of intracellular delivery of mitoxantrone through receptor-mediated endocytosis. Liposomes were prepared by lipid film hydration…

Nanoparticle-Based Drug DeliveryLipid Membrane Structure and BehaviorRNA Interference and Gene Delivery

A new method for preparing alumina nanofibers by electrospinning technology

Weimin Kang、Bowen Cheng、Quanxiang Li 等 5 位作者2010-09-01Textile Research Journal

A new method for synthesizing alumina (Al 2 O 3 ) nanofibers through the electrospinning method was reported. The spinning solutions of anhydrous aluminium chloride/polyvinylpyrrolidone (AlCl 3 /PVP), which were prepared by the sol-gel process of the mixture of AlCl 3, PVP, ethanol and redistilled water, were electros…

Surface Modification and SuperhydrophobicityAdvanced Sensor and Energy Harvesting MaterialsElectrospun Nanofibers in Biomedical Applications

Investigation of shear banding in three-dimensional foams

Guillaume Ovarlez、K. Krishan、Sylvie Cohen‐Addad2010-09-01Europhysics Letters (EPL)

We study the steady flow properties of different three-dimensional aqueous foams in a wide-gap Couette geometry. From local velocity measurements through Magnetic Resonance Imaging (MRI) techniques and from viscosity bifurcation experiments, we find that these foams do not exhibit any observable signature of shear ban…

Fluid Dynamics and Turbulent FlowsEnhanced Oil Recovery TechniquesPickering emulsions and particle stabilization

COMPARISON OF MECHANICAL PROPERTIES OF DATE PALM FIBER- POLYETHYLENE COMPOSITE

Saeed Mahdavi、Hossein Kermanian2010-09-01DOAJ (DOAJ: Directory of Open Access Journals)

Date Palm Fiber (DPF) is one of the most available natural fibers in the Middle East, especially in Iran and the Persian Gulf region. This research provides a new insight into DPF, with consideration of morphological, chemical characteristics, and bulk density, as well as morphological and mechanical properties of DPF…

Wood Treatment and PropertiesNatural Fiber Reinforced CompositesAdvanced Cellulose Research Studies

Pyroelectric properties of barium strontium titanate films: Effect of thermal stresses

J. Zhang、M. W. Cole、S. P. Alpay2010-09-01Journal of Applied Physics

A nonlinear thermodynamic model is used to investigate the influence of thermal stresses on the room temperature (RT) pyroelectric properties of (001)-textured polycrystalline barium strontium titanate (BaxSr1−xTiO3, BST) films with four different compositions on three integrated circuit-friendly substrates: Si, (0001…

Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies

Quantum dots in biomedical applications: advances and challenges

Ludmila Otilia Cinteză2010-09-01Journal of Nanophotonics

In the past two decades, nanotechnology has made great progress in generating novel materials with superior properties. Quantum dots (QDs) are an example of such materials. With unique optical properties, they have proven to be useful in a wide range of applications in life sciences, especially as a better alternative…

Advanced biosensing and bioanalysis techniquesQuantum Dots Synthesis And PropertiesNanocluster Synthesis and Applications

Nanotechnology for Food Applications: More Questions Than Answers

Jean C. Buzby2010-09-01Journal of Consumer Affairs

This article highlights the scientific evidence to date on a variety of nanotechnology issues important to consumers with a focus on food applications. Nanotechnology is technology at the atomic or macromolecular levels on the scale of approximately 1–100 nm. There are unlimited potential applications of nanotechnolog…

Nanoparticles: synthesis and applicationsExtraction and Separation Processes

Preparation, characterization, and in vitro targeted delivery of folate-decorated paclitaxel-loaded bovine serum albumin nanoparticles

Dongmei Zhao、Xiuhua Zhao、Yuangang Zu 等 7 位作者2010-09-01DOAJ (DOAJ: Directory of Open Access Journals)

Dongmei Zhao, Xiuhua Zhao, Yuangang Zu, Jialei Li, Yu Zhang, Ru Jiang, Zhonghua ZhangKey Laboratory of Forest Plant Ecology, Northeast Forestry University, Ministry of Education, Harbin, Heilongjiang, ChinaAbstract: Paclitaxel (Taxol®) is an important anticancer drug in clinical use for treatment of a vari…

Nanoparticle-Based Drug Delivery