Heiko Hartmann、Wolfgang Kaim、Matthias Wanner 等 8 位作者2003-09-30Inorganic Chemistry
The reactions of [fac-Re(CO)(3)(bpy)(MeOH)](PF(6)), bpy = 2.2'-bipyridine, with the TCNX ligands (TCNE = tetracyanoethene, TCNQ = 7,7,8,8-tetracyano-p-quinodimethane, and TCNB = 1,2,4,5-tetracyanobenzene) in CH(2)Cl(2) gave very different results. No reaction was observed with TCNB whereas TCNE produced very labile in…
Magnetism in coordination complexesMolecular Junctions and NanostructuresOrganic and Molecular Conductors Research
S. Ganesh、Sangeeta Prakash、R. Jayakumar2003-09-30Biopolymers
The conformational studies of peptide derivatives A and B in a gel state were studied by using circular dichroism (CD), Fourier transformed infrared (FTIR), and fluorescence spectroscopic techniques. Birefringence and electron microscopic studies were carried out to characterize the morphological aspects of the fibril…
Phytoestrogen effects and researchSeaweed-derived Bioactive CompoundsSupramolecular Self-Assembly in Materials
Susanne Bierbaum、René Beutner、Thomas Hanke 等 6 位作者2003-09-30Journal of Biomedical Materials Research Part A
Studies in developmental and cell biology have established the fact that responses of cells are influenced to a large degree by morphology and composition of the extracellular matrix. Goal of this work is to use this basic principle to improve the biological acceptance of implants by modifying the surfaces with compon…
Proteoglycans and glycosaminoglycans researchConnective tissue disorders researchCollagen: Extraction and Characterization
Takuya Sawada、Akira Ando、Yukio Sakabe 等 5 位作者2003-09-30Japanese Journal of Applied Physics
A study was conducted on the effects of compositional modifications on the temperature coefficient of resonance frequency (TCF) in the disc planar vibration mode for the bismuth layer-structured compound SrBi 2 Nb 2 O 9 (SBN)-based ceramics. The substitution of the strontium site by divalent and trivalent ions improve…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis
Takashi Hayashi、Tomoyuki Hasegawa、Jun Tomizawa 等 4 位作者2003-09-30Japanese Journal of Applied Physics
Low-temperature sintering of LiBiO 2 -coated 0.375Pb(Mg 1/3 Nb 2/3 )O 3 -0.25PbZrO 3 -0.375PbTiO 3 (PMN-PZT) powders was investigated with surface modification through the hydrolysis of lithium ethoxide and bismuth tri-t-amiloxide on the surface of PMN-PZT powders, and their microstructure and piezoelectric properties…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis
Jin Won Seo、E. Couteau、Polona Umek 等 10 位作者2003-09-30New Journal of Physics
This paper reviews recent results in the field of carbon nanotube (CNT) research obtained at our institute at EPFL. We show in particular that CNTs can be synthesized by the catalytic vapour deposition (CVD) technique with high efficiency and purity. Furthermore, we present recent examples of advances in the large-sca…
Carbon Nanotubes in CompositesGraphene research and applicationsNanotechnology research and applications
D. Ködderitzsch、W. Hergert、Z. Szotek 等 4 位作者2003-09-30Physical review. B, Condensed matter
We report on vacancy induced half-metallicity in the prototype Mott-insulating substances MnO and NiO. By embedding a cation vacancy into a magnetic system a new road opens up to the construction of half-metallic antiferromagnets. For ${\mathrm{Ni}}_{0.97}\mathrm{O}$ we find a half-metallic antiferromagnet, a system h…
Magnetic properties of thin filmsZnO doping and propertiesMagnetic and transport properties of perovskites and related materials
Fouzia Boulmedais、M. Bozonnet、Pascale Schwinté 等 5 位作者2003-09-30Langmuir
Polyelectrolyte multilayers constructed from polypeptides present secondary structures similar to those found in proteins (α-helices and β-sheets). These secondary structures are used as a tool to investigate the buildup and internal stability of multilayer films by means of Fourier transform infrared spectroscopy. Sp…
Polymer Surface Interaction StudiesDendrimers and Hyperbranched PolymersMarine Biology and Environmental Chemistry
Madhu Menon、Antonis N. Andriotis、Deepak Srivastava 等 5 位作者2003-09-30Physical Review Letters
Using tight-binding molecular dynamics we simulate the formation of single wall carbon nanotube T junctions via the fusing of two nanotubes. We propose energetically efficient pathways for this process in which all atoms maintain their sp(2) arrangements throughout. Recent experimental advances have greatly increased…
Carbon Nanotubes in CompositesGraphene research and applicationsForce Microscopy Techniques and Applications
Ken‐ichi Kakimoto、Izumi Masuda、Hitoshi Ohsato2003-09-30Japanese Journal of Applied Physics
Dense KNbO 3 ceramics have been successfully synthesized by pressure-less sintering under optimized heat-treatment conditions using a small amount of La 2 O 3 and Fe 2 O 3 additives. KNbO 3 forms (K 1- x La x )(Nb 1- x Fe x )O 3 solid solutions and changes in the crystal system, depending on the additive content, from…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies
Anthony Gonçalvès、A.C. Braud、F. Viret 等 9 位作者2003-09-30PubMed
PURPOSE: To determine the maximum tolerated dose of the combination of Carboplatin and Caelyx, a pegylated liposomal doxorubicin, with promising activities in various solid tumors. PATIENTS AND METHODS: Twenty-two patients with various advanced solid tumors were included. Three dose levels of Caelyx were explored: 30,…
Nanoparticle-Based Drug DeliveryProtease and Inhibitor MechanismsCancer Treatment and Pharmacology
A. Fernandez Fernandez、B. Brichard、Francis Berghmans2003-09-30IEEE Photonics Technology Letters
We propose a technique to measure in situ the refractive index changes induced by ionizing radiation in single-mode optical fibers. This change can be derived from the channel drift appearing in narrow channel wavelength-division-multiplexing couplers exposed to gamma radiation. We measured a radiation-induced refract…
Advanced Fiber Optic SensorsGlass properties and applicationsPhotonic Crystal and Fiber Optics
Morinobu Endo、B J Lee、Yoong Ahm Kim 等 9 位作者2003-09-30New Journal of Physics
Here we investigate the stabilization process on the active outer/inner surfaces (or the end plane of a graphene sheet) for shortened cup-stacked-type carbon nanotubes caused by annealing, utilizing both analytic and electrochemical techniques. The suggested schematic procedure for loop formation is as follows: (a) fo…
Carbon Nanotubes in CompositesGraphene research and applicationsForce Microscopy Techniques and Applications
Yukie Nakano、Takeshi Nomura、Tadashi Takenaka2003-09-30Japanese Journal of Applied Physics
The residual stress of multilayer ceramic capacitors (MLCCs) has been studied. The capacitance decreased significantly under external compressive stress applied to MLCCs in the thickness direction, on the other hand, the capacitance increased under external stress in the width direction. These capacitance changes depe…
Ferroelectric and Piezoelectric MaterialsSemiconductor materials and devicesCopper Interconnects and Reliability
George E. Froudakis、Melanie Schnell、Max Mühlhäuser 等 7 位作者2003-09-30Physical review. B, Condensed matter
Effects of oxygen adsorption on the structural and transport properties of single wall carbon nanotubes (SWCN's) are investigated in detail using ab initio and generalized tight-binding molecular-dynamics methods. We find that the oxygen-SWCN interaction depends strongly on the spin configuration which, in turn, speci…
Carbon Nanotubes in CompositesGraphene research and applicationsBoron and Carbon Nanomaterials Research
Masatake Takahashi、Yuji Noguchi、Masaru Miyayama2003-09-30Japanese Journal of Applied Physics
Electrical conduction behaviors of bismuth titanate (BiT) and vanadium-doped bismuth titanate (V-BiT) single crystals were investigated by the complex impedance method at high temperatures. Oxygen partial pressure dependence of the electrical conductivity revealed that both BiT and V-BiT showed oxide ionic and p -type…
Ferroelectric and Piezoelectric MaterialsMagnetic and transport properties of perovskites and related materialsElectronic and Structural Properties of Oxides
Huan Xie、А. Г. Ткаченко、Wilhelm R. Glomm 等 8 位作者2003-09-30Analytical Chemistry
Protocols for modifying gold nanoparticles with peptide-bovine serum albumin (BSA) conjugates are described within. The resulting constructs were characterized using a number of techniques including static fluorescence spectroscopy and time-correlated single photon counting spectroscopy (TCSPC) in order to quantify pe…
Gold and Silver Nanoparticles Synthesis and ApplicationsAnalytical chemistry methods developmentMass Spectrometry Techniques and Applications
Takahiro Wada、Kenji Tsuji、Takehisa Saito 等 4 位作者2003-09-30Japanese Journal of Applied Physics
High-density ceramic samples of NaNbO 3 (NN) have been successfully fabricated by spark plasma sintering (SPS), which is a process that uses microscopic electrical discharge between particles under pressure. The obtained NN ceramic shows a hysteresis loop characteristic of ferroelectrics. The coercive electric field,…
Ferroelectric and Piezoelectric MaterialsAcoustic Wave Resonator TechnologiesMicrowave Dielectric Ceramics Synthesis
Colin W. G. Fishwick、Andrew J. Beevers、Lisa M. Carrick 等 6 位作者2003-09-30Nano Letters
Molecular Dynamics (MD) simulations have been used to obtain a molecular insight into the origins of the twist, bend, and helix pitch of the tape-like and ribbon (double tape)-like β-sheet aggregates formed by the self-assembling peptides P 11 -I (CH 3 CO-QQRQQQQQEQQ-NH 2 ) and P 11 -II (CH 3 CO-QQRFQWQFEQQ-NH 2 ). P…
Supramolecular Self-Assembly in MaterialsAdvanced Materials and MechanicsPolydiacetylene-based materials and applications
Abhishek K. Singh、Tina M. Briere、Vijay Kumar 等 4 位作者2003-09-30Physical Review Letters
Using first-principles density functional calculations, we show that hexagonal metallic silicon nanotubes can be stabilized by doping with 3d transition metal atoms. Finite nanotubes doped with Fe and Mn have high local magnetic moments, whereas Co-doped nanotubes have low values and Ni-doped nanotubes are mostly nonm…
Graphene research and applicationsBoron and Carbon Nanomaterials ResearchSemiconductor materials and interfaces