Esfandiar Behravesh、Kyriacos Zygourakis、Antonios G. Mikos2003-03-20Journal of Biomedical Materials Research Part A
Marrow-derived osteoblasts were cultured on poly(propylene fumarate-co-ethylene glycol) (P(PF-co-EG)) based hydrogels modified in bulk with a covalently linked RGDS model peptide. A poly(ethylene glycol) spacer arm was utilized to covalently link the peptide to the hydrogel. Three P(PF-co-EG) block copolymers were syn…
Bone Tissue Engineering MaterialsPolymer Surface Interaction StudiesSilk-based biomaterials and applications
Stefan Tsonchev、George C. Schatz、Mark A. Ratner2003-03-20Nano Letters
We present a new approach to the problem of finding the minimum-energy structures resulting from the self-assembly of amphiphile nanoparticles possessing a hydrophobic “tail” and a hydrophilic “head”. When the repulsive interactions between the “heads” are of hard-sphere type, the approach is rigorous and is reduced t…
Advanced Polymer Synthesis and CharacterizationSurfactants and Colloidal SystemsSupramolecular Self-Assembly in Materials
Christine Tedeschi、Joëlle Azéma、Heinz Gornitzka 等 5 位作者2003-03-20Dalton Transactions
Four lanthanide complexes of 1-hydroxy-2-pyridinone (HOPO) have been synthesised from aqueous solution at pH ≈ 7 and their structures and luminescent properties have been established. This ligand coordinates to lanthanide(III) ions as an anionic bidentate chelate (1-oxy-2-pyridinonate, OPO−) and crystallographic analy…
Metal complexes synthesis and propertiesMagnetism in coordination complexesLanthanide and Transition Metal Complexes
Gaetano Lamberti、Valerio Brucato2003-03-20Journal of Polymer Science Part B Polymer Physics
Abstract A method based on Fourier transform infrared (FTIR) transmission spectra is proposed to measure the crystallinity of isotactic polypropylene (iPP) samples. The method parameters were tuned as compared with wide‐angle X‐ray scattering measurements performed on test samples characterized by different crystallin…
Polymer crystallization and propertiesSpectroscopy and Chemometric AnalysesCultural Heritage Materials Analysis
Shufang Yu、Naichao Li、John E. Wharton 等 4 位作者2003-03-20Nano Letters
The template method is a general approach for preparing nanomaterials, in particular nanowires and nanotubes. The ability to control the dimensions of the nanowires and tubes obtained is an important feature of the template method. Diameter can be controlled at will by varying the diameter of the pores in the template…
Nanowire Synthesis and ApplicationsNanopore and Nanochannel Transport StudiesAnodic Oxide Films and Nanostructures
Zheng Jiao、Minghong Wu、Qin Zheng 等 4 位作者2003-03-20Nanotechnology
In this work, NiO thin film was prepared by the sol–gel technique and analysed by thermogravimetry, x-ray diffractometry and x-ray photoelectron spectroscopy. The electrochromic characteristics were studied by ultraviolet spectroscopy. NiO thin film shows electrochromic characteristics. Its colour changes from transpa…
Gas Sensing Nanomaterials and SensorsConducting polymers and applicationsTransition Metal Oxide Nanomaterials
P. Murugavel、Ju Hyoung Lee、Myunglae Jo 等 7 位作者2003-03-20Applied Physics Letters
The possibility of controlling transport properties of colossal magnetoresistance manganite films using substrate-induced strain has attracted great interest. We have investigated transport properties of La0.9Ca0.1MnO3, La0.92Ba0.08MnO3, La0.8Ba0.2MnO3, and LaMnO3 films. When the films were post-annealed at proper con…
Magnetic and transport properties of perovskites and related materialsAdvanced Condensed Matter PhysicsElectronic and Structural Properties of Oxides
R. Casalini、Marian Paluch、C. M. Roland2003-03-20The Journal of Chemical Physics
The physics underlying the dynamics of molecules near their glass temperature, Tg, comprises one of the major unsolved problems in condensed matter. Of particular interest are the striking changes in relaxation properties observed at temperatures ∼1.2 times higher than Tg. Herein, we describe experiments in which thes…
Material Dynamics and PropertiesThermodynamic properties of mixturesSpectroscopy and Quantum Chemical Studies
Hao Wu、Huifang Xu、Qiang Su 等 5 位作者2003-03-20Journal of Materials Chemistry
Yttrium orthovanadate (YVO4) crystals have been prepared hydrothermally in both strongly acidic and basic media. The effects of vanadium source, acid, addition of sodium hydroxide, chelating reagent, and even solvent on the crystalline size and shape were explored using X-ray powder diffraction (XRD), scanning electro…
Luminescence Properties of Advanced MaterialsGlass properties and applicationsCrystal Structures and Properties
G. Y. Zhang、E. G. Wang2003-03-20Applied Physics Letters
Carbon nanotubes are filled with copper by means of chemical vapor deposition. Control of the density of copper in the plasma is crucial and is accomplished by adjusting the length of the copper electrodes that are exposed to the tungsten heating filament. Both simple and branched Cu-filled nanotubes were grown. Most…
Carbon Nanotubes in CompositesGraphene research and applicationsThermal properties of materials
Anthony Grbic、George V. Eleftheriades2003-03-20Applied Physics Letters
We show the enhancement of evanescent waves by a realizable negative-refractive-index (NRI) medium consisting of a periodic 2-D L,C loaded transmission-line (TL) network. This network is referred to as a dual TL structure. Growing evanescent waves within the dual TL structure are predicted analytically and demonstrate…
Metamaterials and Metasurfaces ApplicationsPhotonic Crystals and ApplicationsAdvanced Antenna and Metasurface Technologies
Rupei Tang、Yumin Du、Lihong Fan2003-03-20Journal of Polymer Science Part B Polymer Physics
Abstract For improved mechanical and water‐swelling properties of chitosan films, a series of transparent films were prepared with dialdehyde starch as a crosslinking agent. Fourier transform infrared and X‐ray analysis results demonstrated that the formation of Schiff's base disturbed the crystallization of chitosan.…
Nanocomposite Films for Food Packagingbiodegradable polymer synthesis and propertiesStudies on Chitinases and Chitosanases
M. Jain、S. B. Majumder、Ram S. Katiyar 等 5 位作者2003-03-20Applied Physics Letters
Highly (100) textured graded manganese (Mn) doped Ba0.5Sr0.5TiO3 [BST (50/50)] thin films were deposited on lanthanum aluminate substrates using sol-gel technique. We have demonstrated that the graded acceptor doping is a promising technique to reduce the temperature coefficient of capacitance (TCC), loss tangent, and…
Ferroelectric and Piezoelectric MaterialsMicrowave Dielectric Ceramics SynthesisElectronic and Structural Properties of Oxides
Joël J. E. Moreau、Luc Vellutini、Michel Wong Chi Man 等 4 位作者2003-03-20Chemistry - A European Journal
A new approach for the morphological control of bridged silsesquioxanes has been achieved by the hydrolysis of silylated organic molecules bearing urea groups. The urea groups are responsible for the auto-association of the molecules through intermolecular hydrogen-bonding interactions. The self-assembly leads to supr…
Mesoporous Materials and CatalysisSilicone and Siloxane ChemistryInorganic Fluorides and Related Compounds
Jung‐Il Hong、Linda S. Schadler、Richard W. Siegel 等 4 位作者2003-03-20Applied Physics Letters
ZnO/low density polyethylene (LDPE) nanocomposites were prepared using melt mixing with good dispersion of the ZnO nanoparticles. The electrical properties (dc resistivity and breakdown strength) of the composite with various concentrations of ZnO up to the percolation limit were measured and compared to the correspon…
Polymer Nanocomposites and PropertiesDielectric materials and actuatorsPolymer Nanocomposite Synthesis and Irradiation
Heesun Yang、Paul H. Holloway2003-03-20Applied Physics Letters
Enhanced photoluminescence (PL) is reported from Mn2+-doped CdS nanocrystals capped with ZnS (CdS:Mn/ZnS core/shell) that were prepared using a reverse micelle route. Compared to organically (n-dodecanethiol) capped CdS:Mn nanocrystals, CdS:Mn/ZnS core/shell nanocrystals exhibited much stronger and sharper Mn2+ 4T1–6A…
Quantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanocluster Synthesis and Applications
Yujie Xiong、Yi Xie、Zhengquan Li 等 4 位作者2003-03-20Chemistry - A European Journal
A new coordination-polymer-precursor route has been developed to synthesize nanowires under hydrothermal conditions. In the present work, well-aligned gamma-MnO(2) nanowires, growing along the [0 0 2] axis, have successfully been prepared by selecting an appropriate coordination polymer [[Mn(SO(4))(4,4'-bpy)(H(2)O)(2)…
Supercapacitor Materials and FabricationConducting polymers and applicationsTransition Metal Oxide Nanomaterials
Raffaele Mezzenga、Janne Ruokolainen、Glenn H. Fredrickson 等 7 位作者2003-03-20Science
A route for producing semiconducting polymer blends is demonstrated in which a doped pi-conjugated polymer is forced into a three-dimensionally continuous minor phase by the self-assembly of colloidal particles and block copolymers. The resulting cellular morphology can be viewed as a high-internal phase polymeric emu…
Organic Electronics and PhotovoltaicsAdvanced Sensor and Energy Harvesting MaterialsConducting polymers and applications
B. Zorman、Richard A. Friesner2003-03-20The Journal of Chemical Physics
Excitation energies for wurtzite spherical ZnS and CdSe quantum dots in the range of 40–4000 atoms were calculated using empirical pseudopotentials and a real-space basis. The energies are compared to experiments and other pseudopotential models. For ZnS quantum dots, squared transition dipole sums were computed effic…
Quantum Dots Synthesis And PropertiesMolecular Junctions and NanostructuresNear-Field Optical Microscopy
I. Cabria、J. W. Mintmire、C. T. White2003-03-20Physical review. B, Condensed matter
We report local-density-functional results that show that narrow nanotubes with optimized diameters between about 0.34 and 0.5 nm can be either semiconducting or metallic, but with electron structures near the Fermi level that often cannot be understood starting from the graphene sheet model, successful in the study o…
Carbon Nanotubes in CompositesGraphene research and applicationsFullerene Chemistry and Applications