H. Aliaga、D. Magnoux、Adriana Moreo 等 6 位作者2003-09-04Physical review. B, Condensed matter
A comprehensive analysis of half-doped manganites is presented using Monte Carlo simulations applied to the double-exchange model with cooperative Jahn-Teller lattice distortions in two dimensions. A variety of results are reported. In particular (i) The phase diagram is established in the $\ensuremath{\lambda}\ensure…
Physics of Superconductivity and MagnetismAdvanced Condensed Matter PhysicsMagnetic and transport properties of perovskites and related materials
Marijke W. Edelman、Erik van der Linden、R. Hans Tromp2003-09-04Macromolecules
The phase behavior of aqueous mixtures of poly(ethylene oxide) (PEO) and dextran is studied as a function of the polymer concentration, the PEO molar mass, and temperature. The molar mass distributions of the two polymers in the coexisting phases are measured. From the temperature dependence we conclude that the phase…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesSurfactants and Colloidal Systems
Yali Li、K. G. Neoh、Lian Cen 等 4 位作者2003-09-04Biotechnology and Bioengineering
A surface modification technique was developed for the covalent immobilization of heparin onto electrically conductive polypyrrole (PPY) film. The PPY film was first graft copolymerized with poly(ethylene glycol) methacrylate (PEGMA) and then activated with cyanuric chloride (CC). Heparin was then immobilized onto the…
Electrospun Nanofibers in Biomedical ApplicationsAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications
Lin‐Shu Du、Jonathan F. Stebbins2003-09-04Chemistry of Materials
In a series of mono and mixed-alkali borosilicate glasses (∼0.7M 2 O·B 2 O 3 ·2SiO 2, M = Li, Na, K, ( 1 / 2 Li 2 O + ∼ 1 / 2 Na 2 O), ( 1 / 2 Li 2 O + 1 / 2 K 2 O), and (∼ 1 / 2 Na 2 O + 1 / 2 K 2 O)), we have applied triple-quantum magic-angle spinning (3QMAS) and 11 B and 17 O NMR to obtain high-resolution informat…
Luminescence Properties of Advanced MaterialsAdvanced Condensed Matter PhysicsGlass properties and applications
Steven P Higgins、Amy Solan、Laura E. Niklason2003-09-04Journal of Biomedical Materials Research Part A
Polyglycolic acid (PGA) is commonly used as a scaffold for tissue engineering. Recent studies utilized PGA as a scaffold for vascular tissue engineering using bovine and porcine smooth muscle cells (SMCs). In engineered vessels, the SMCs displayed high rates of mitosis and dedifferentiation in areas where PGA fragment…
Tissue Engineering and Regenerative MedicineElectrospun Nanofibers in Biomedical ApplicationsCardiac Ischemia and Reperfusion
J. Hlinka、V. Zelezny、I. Gregora 等 8 位作者2003-09-04arXiv
The paper presents infrared reflectivity and micro-Raman scattering spectra of LiBC powder pellets. The experiment allowed assignment of frequencies of all infrared and Raman active zone center modes. Results are compared with available ab-initio calculations; prediction of large Born effective charges on the nodes of…
SuperconductivityMaterials Science
M. P. López-Sancho、L. Brey2003-09-04Physical review. B, Condensed matter
We study the effect that the ferromagnetic order has on the electrical properties of diluted magnetic semiconductors. We analyze the temperature dependence of the dielectric constant and of the resistivity of ${\mathrm{Ga}}_{1\ensuremath{-}x}{\mathrm{Mn}}_{x}\mathrm{As}.$ In our treatment the electronic structure of t…
ZnO doping and propertiesMagnetic and transport properties of perovskites and related materialsTransition Metal Oxide Nanomaterials
R. Mahendiran、Y. Bréard、M. Hervieu 等 5 位作者2003-09-04Physical review. B, Condensed matter
We have investigated the magnetic properties of nanocrystalline ${\mathrm{LaCo}}_{0.5}{\mathrm{Mn}}_{0.5}{\mathrm{O}}_{3}.$ The temperature dependence of the imaginary part of the ac susceptibility shows a strongly frequency-dependent maximum at a temperature ${T}_{f},$ which is well below the ferromagnetic transition…
Rare-earth and actinide compoundsAdvanced Condensed Matter PhysicsMagnetic and transport properties of perovskites and related materials
Eric D. Chisolm、Scott D. Crockett、Duane C. Wallace2003-09-04arXiv
We propose a means for constructing highly accurate equations of state (EOS) for elemental solids and liquids essentially from first principles, based upon a particular decomposition of the underlying condensed matter Hamiltonian for the nuclei and electrons. We also point out that at low pressures the neglect of anha…
Materials Science
Yu Chang、Hua Chun Zeng2003-09-04Crystal Growth & Design
A full range of novel multipod frameworks of Cu 2 O microcrystals has been prepared in solution phase via manipulating synthetic parameters. More importantly, a new organization scheme for three-dimensional crystal aggregates has been elucidated in this work; faceted microcrystal subunits (6, 8, and 12 pieces) with si…
Supramolecular Self-Assembly in MaterialsCopper-based nanomaterials and applicationsZnO doping and properties
Robert W. J. Scott、Heechang Ye、Ronald R. Henriquez 等 4 位作者2003-09-04Chemistry of Materials
Here we report on the synthesis, physical and chemical properties, and stability of Pd nanoparticles encapsulated within poly(amidoamine) (PAMAM) dendrimers. Specifically, amine- and hydroxyl-terminated PAMAM dendrimers ranging in generation from 4 to 8 were studied. Under appropriate conditions, addition of K 2 PdCl…
Synthesis and properties of polymersAdvanced Polymer Synthesis and CharacterizationDendrimers and Hyperbranched Polymers
Eldon G. Emberly、Ranjan Mukhopadhyay、Chao Tang 等 4 位作者2003-09-04arXiv
Protein folds are built primarily from the packing together of two types of structures: alpha-helices and beta-sheets. Neither structure is rigid, and the flexibility of helices and sheets is often important in determining the final fold ({\it e.g.}, coiled coils and beta-barrels). Recent work has quantified the flexi…
Materials Scienceq-bio.BMSoft Condensed Matter
Geza Toth、Colin Denniston、J. M. Yeomans2003-09-04arXiv
We study the growth of aligned domains in nematic liquid crystals. Results are obtained solving the Beris-Edwards equations of motion using the lattice Boltzmann approach. Spatial anisotropy in the domain growth is shown to be a consequence of the flow induced by the changing order parameter field (backflow). The gene…
Soft Condensed Mattercond-mat.stat-mechMaterials Science
Achim Hartschuh、Hermeneglido N. Pedrosa、Lukáš Novotný 等 4 位作者2003-09-04OpenAlex
Single-molecule fluorescence spectroscopy was used to determine the electronic properties of individual single-walled carbon nanotubes. Carbon nanotube structure was determined simultaneously from Raman spectroscopy. Fluorescence spectra from individual nanotubes with identical structures have different emission energ…
Carbon Nanotubes in CompositesGraphene research and applicationsFullerene Chemistry and Applications
Yasuhiro Shimizu、Kazuya Miyagawa、Kazushi Kanoda 等 5 位作者2003-09-04OpenAlex
$^{1}\mathrm{H}$ NMR and static susceptibility measurements have been performed in an organic Mott insulator with a nearly isotropic triangular lattice, $\ensuremath{\kappa}\mathrm{\text{\ensuremath{-}}}(\mathrm{B}\mathrm{E}\mathrm{D}\mathrm{T}\mathrm{\text{\ensuremath{-}}}\mathrm{T}\mathrm{T}\mathrm{F}{)}_{2}{\mathrm…
Advanced Condensed Matter PhysicsOrganic and Molecular Conductors ResearchPhysics of Superconductivity and Magnetism
Jakob Schiøtz、Karsten W. Jacobsen2003-09-04OpenAlex
We used molecular dynamics simulations with system sizes up to 100 million atoms to simulate plastic deformation of nanocrystalline copper. By varying the grain size between 5 and 50 nanometers, we show that the flow stress and thus the strength exhibit a maximum at a grain size of 10 to 15 nanometers. This maximum is…
Metal and Thin Film MechanicsMicrostructure and mechanical propertiesHigh-Velocity Impact and Material Behavior
V. V. Kononenko、T. V. Kononenko、S.M. Pimenov 等 10 位作者2003-09-03Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Results are reported on the study of phase transformations in diamonds induced by nano- and picosecond pulses of KrF excimer laser (λ=248 nm) and second harmonic of a YAP:Nd laser (λ=539 nm). Main attention in the research was paid to i) laser-induced graphitization of high-quality CVD diamond plates and ii) laser-ind…
Diamond and Carbon-based Materials ResearchLaser Material Processing TechniquesLaser-induced spectroscopy and plasma
Jean-Claude Lasjaunias2003-09-03Comptes Rendus Physique
Thermal properties, such as thermal transport, heat capacity and its relation to elastic constants, and He adsorption, are presented by comparing theoretical predictions, in general for individual C-nanotubes (NT), to some typical experimental results commonly obtained not on individual NTs, but on larger collective a…
Thermal properties of materialsGraphene research and applicationsCarbon Nanotubes in Composites
Jinrong Yao、Dahui Xiao、Xin Chen 等 6 位作者2003-09-03Macromolecules
With the step-growth polymerization of bis(oligopeptides) and diisocyanates, two silk−proteinlike multiblock polymers ( P1, P2 ), containing −(Ala) 4 − and −(GlyAlaGlyAla)− sequence derived from the crystalline region of spider dragline silk and silkworm ( Bombyx mori) silk respectively, has been synthesized successfu…
Neurobiology and Insect Physiology ResearchAntimicrobial Peptides and ActivitiesSilk-based biomaterials and applications
Ph. Lambin2003-09-03Comptes Rendus Physique
This paper is a review of the theoretical and experimental studies devoted so far to the electronic structure of pure carbon nanotubes, including single-wall, multiwall, and ropes of single-wall nanotubes. A universal picture of the band structure of single-wall nanotubes is obtained by exploiting a particular helical…
Graphene research and applicationsMechanical and Optical ResonatorsCarbon Nanotubes in Composites