Hua Wei、Cheng Cheng、Cong Chang 等 7 位作者2008-03-19Langmuir
Shell cross-linked (SCL) thermoresponsive hybrid micelles consisting of a cross-linked thermoresponsive hybrid hydrophilic shell and a hydrophobic core domain were synthesized from poly(N-isopropylacrylamide-co-3- (trimethoxysilyl)propyl methacrylate)-b-polymethyl methacrylate (P(NIPAAm-co-MPMA)-b-PMMA) amphiphilic bl…
Hydrogels: synthesis, properties, applicationsNanoparticle-Based Drug DeliveryAdvanced Polymer Synthesis and Characterization
Masahiro Fujita、Tomoharu Sawayanagi、Hideki Abe 等 8 位作者2008-03-19Macromolecules
The annealing behavior of poly( l -lactic acid) (PLLA) and poly( d -lactic acid) (PDLA) single crystals was investigated in order to reveal the mechanism of chain diffusion in their solid states, below their melting points. The structural changes of the sedimented single-crystal mats on continuous heating were followe…
biodegradable polymer synthesis and propertiesMicroplastics and Plastic PollutionCarbon dioxide utilization in catalysis
Sheng‐Huei Hsiao、Guey‐Sheng Liou、Yi‐Chun Kung 等 4 位作者2008-03-19Macromolecules
A series of electroactive aromatic polyamides with 4-(dimethylamino)triphenylamine [(NMe 2 )TPA] units in the backbone were prepared from a newly synthesized diamine monomer, 4,4′-diamino-4′′-(dimethylamino)triphenylamine, and various aromatic dicarboxylic acids via the phophorylation polyamidation reaction. These pol…
Organic Electronics and PhotovoltaicsConducting polymers and applicationsTransition Metal Oxide Nanomaterials
I. G. Bostrem、Jun-ichiro Kishine、A. S. Ovchinnikov2008-03-19arXiv
We show that the bulk transport magnetic current is generated by the moving magnetic kink crystal (chiral soliton lattice) formed in the chiral helimagnet under the static magnetic field applied perpendicular to the helical axis. The current is caused by the non-equilibrium transport momentum with the kink mass being…
Strongly Correlated ElectronsMaterials Science
T. Proslier、J. F. Zasadzinski、L. Cooley 等 8 位作者2008-03-19arXiv
Tunneling spectroscopy was performed on Nb pieces prepared by the same processes used to etch and clean superconducting radio frequency (SRF) cavities. Air exposed, electropolished Nb exhibited a surface superconducting gap delta=1.55 meV, characteristic of clean, bulk Nb. However the tunneling density of states (DOS)…
SuperconductivityMaterials Science
K. V. Thadani、G. Finocchio、Z. -P. Li 等 9 位作者2008-03-19arXiv
We measure the microwave signals produced by spin-torque-driven magnetization dynamics in patterned magnetic multilayer devices at room temperature, as a function of the angle of a magnetic field applied in the sample plane. We find strong variations in the frequency linewidth of the signals, with a decrease by more t…
Materials Sciencecond-mat.other
A. P. Sorini、J. J. Rehr、Zachary H. Levine2008-03-19Physical Review B
Recently, it has been demonstrated that a careful treatment of both longitudinal and transverse matrix elements in electron energy loss spectra can explain the mystery of relativistic effects on the magic angle. Here, we show that there is an additional correction of order ${(Z\ensuremath{\alpha})}^{2}$, where $Z$ is…
Atomic and Molecular PhysicsX-ray Spectroscopy and Fluorescence AnalysisElectron and X-Ray Spectroscopy Techniques
K. Ebata、M. Takizawa、Kikuo Maekawa 等 7 位作者2008-03-19Physical Review B
We have studied the chemical potential shift as a function of temperature in ${\mathrm{Nd}}_{1\ensuremath{-}x}{\mathrm{Sr}}_{x}\mathrm{Mn}{\mathrm{O}}_{3}$ by measurements of core-level photoemission spectra. For ferromagnetic samples ($x=0.4$ and 0.45), we observed an unusually large upward chemical potential shift w…
Magnetic and transport properties of perovskites and related materialsSolid-state spectroscopy and crystallographyAdvanced Condensed Matter Physics
Dong Sun、Zong-Kwei Wu、Charles Divin 等 8 位作者2008-03-19arXiv
We investigate the ultrafast relaxation dynamics of hot Dirac fermionic quasiparticles in multilayer epitaxial graphene using ultrafast optical differential transmission spectroscopy. We observe DT spectra which are well described by interband transitions with no electron-hole interaction. Following the initial therma…
Materials ScienceStrongly Correlated Electrons
D. Wagner、O. Devisme、F. Patisson 等 4 位作者2008-03-19arXiv
To reduce the emission of greenhouse gases by the steel industry, particularly for ironmaking, the production of DRI (Direct Reduced Iron) using hydrogen as the reducing gas instead of carbon monoxide is being considered. In this context, the reduction of pure hematite by hydrogen was studied at the laboratory scale,…
Materials Science
F. Patisson、B. Dussoubs、D. Ablitzer2008-03-19arXiv
One of the major issues with multiparticle reactors is to handle their multiscale aspect. For modeling, it usually comes to coupling a reactor model (describing the phenomena at the macroscopic scale) with a so-called grain model (simulating the behavior of a single grain or a particle). An interesting approach propos…
Materials Science
Atsushi Mori、Takamasa Kaito、Hidemitsu Furukawa2008-03-19arXiv
Birefringence measurements have been carried out on the Pb-doped silica hydrogels prepared under various magnetic fields up to 5T. The silica gels prepared at 5T were used as a medium of crystal growth of PbBr2, whose result implied the structural anisotropy; an aligned array of crystallites was obtained by transmissi…
Materials ScienceSoft Condensed Matter
Julien Toulouse、C. J. Umrigar2008-03-19arXiv
We pursue the development and application of the recently-introduced linear optimization method for determining the optimal linear and nonlinear parameters of Jastrow-Slater wave functions in a variational Monte Carlo framework. In this approach, the optimal parameters are found iteratively by diagonalizing the Hamilt…
Materials Sciencephysics.comp-phcond-mat.otherChemical Physics
Alexander Gruneis、Denis Vyalikh2008-03-19arXiv
We present an approach to monitor and control the strength of the hybridization between electronic states of graphene and metal surfaces. Inspecting the distribution of the $π$ band in a high-quality graphene layer synthesized on Ni(111) by angle-resolved photoemission, we observe a new "kink" feature which indicates…
Strongly Correlated ElectronsMaterials Science
Gilad Lerman、Uriel Levy2008-03-19Optics Express
We study the effect of polarization and aperture geometry on the focal spot size of a high numerical aperture (NA) aplanatic lens. We show that for a clear aperture geometry, illuminating the lens by linear or circular polarization is preferable over radial polarization for spot size reduction applications. For annula…
Near-Field Optical MicroscopyOptical Coatings and GratingsSuperconducting and THz Device Technology
I.S. Elashmawi、N. A. Hakeem2008-03-19Polymer Engineering and Science
Abstract Polyvinylidene fluoride and polymethylmethacrylate (PVDF/PMMA) films were blended with different concentrations by casting method. Structural, spectroscopic, and morphological characteristics of both the interface and the surface of the films have been investigated. The blends were characterized using X‐ray d…
Polymer Nanocomposite Synthesis and IrradiationPolymer Science and PVCPolymer Nanocomposites and Properties
Andrzej Pawlak、Andrzej Gałęski2008-03-19Macromolecules
The process of cavitation during tensile deformation of polypropylene was studied. It was shown that in injection-molded polypropylene samples cavities appear in the center of a sample shortly before yielding. With increasing deformation the cavities change their size, number, and orientation from elongated perpendicu…
Polymer crystallization and propertiesPolymer Nanocomposites and PropertiesPolymer Science and PVC
Rosendo Valero、R. Costa、Ibério de P. R. Moreira 等 5 位作者2008-03-19The Journal of Chemical Physics
The performance of the M06 family of exchange-correlation potentials for describing the electronic structure and the Heisenberg magnetic coupling constant (J) is investigated using a set of representative open-shell systems involving two unpaired electrons. The set of molecular systems studied has well defined structu…
Electron Spin Resonance StudiesAdvanced NMR Techniques and ApplicationsMagnetism in coordination complexes
Feng Jiao、A.H. Hill、Andrew Harrison 等 6 位作者2008-03-19OpenAlex
A mesoporous solid with crystalline walls and an ordered pore structure exhibiting a bimodal pore size distribution (3.3 and 11 nm diameter pores) has been synthesized. Previous attempts to synthesize solids with large ordered mesopores by hard templating focused on the preparation of templates with thick walls (the t…
Polyoxometalates: Synthesis and ApplicationsSupercapacitor Materials and FabricationMesoporous Materials and Catalysis
Xiao Wei Sun、Juan Huang、J. X. Wang 等 4 位作者2008-03-19OpenAlex
An inorganic/organic heterostructure light-emitting diode consisting of the hole-transporting layer N, N'-di(naphth-2-yl)- N, N'-diphenylbenzidine (NPB) and n-type ZnO nanorods fabricated by hydrothermal decomposition is reported. Poly(methyl methacrylate) was used to form a smooth surface on top of ZnO nanorod array…
Gas Sensing Nanomaterials and SensorsZnO doping and propertiesGaN-based semiconductor devices and materials