Bartosz A. Grzybowski、Xingyu Jiang、Howard A. Stone 等 4 位作者2001-06-21Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
This paper describes self-assembly of millimeter-sized, magnetized disks floating on a liquid-air interface, and rotating under the influence of a rotating external magnetic field. Spinning of the disks results in hydrodynamic repulsion between them, while the rotating magnetic field produces an average confining pote…
Micro and Nano RoboticsAdvanced Materials and MechanicsPickering emulsions and particle stabilization
Henk Huinink、M. A. van Dijk、J.C.M. Brokken-Zijp 等 4 位作者2001-06-21Macromolecules
A dynamic density functional theory for polymeric systems has been used to investigate the influence of surface fields on the morphology of thin films of asymmetric diblock copolymers, which form cylinders in a bulk system. We have found that noncylindrical structures become stable when one of the blocks is strongly a…
Theoretical and Computational PhysicsBlock Copolymer Self-AssemblyFluid Dynamics and Thin Films
M. A. Pimenta、Ado Jório、S. D. M. Brown 等 9 位作者2001-06-21Physical review. B, Condensed matter
Raman D-band spectra are reported for several different SWNTs using two different laser energies ${(E}_{\mathrm{laser}}=1.58$ and 2.41 eV). At a fixed ${E}_{\mathrm{laser}},$ individual isolated SWNTs exhibit different diameter-dependent D-band frequencies ${\ensuremath{\omega}}_{D}$ around an average value. For both…
Diamond and Carbon-based Materials ResearchMechanical and Optical ResonatorsCarbon Nanotubes in Composites
Wen-Tzong Liu、Chung‐Sung Tan2001-06-21Industrial & Engineering Chemistry Research
Kinetic data on the esterification of propionic acid with n -butanol catalyzed by Amberlyst 15, Amberlyst 35, Amberlyst 39, and HZSM-5 pellets were measured at the temperatures from 353 to 383 K in a stirred batch reactor. The data indicated that the Amberlyst series resins were all effective to carry out this esterif…
Analytical Chemistry and ChromatographyProcess Optimization and IntegrationCrystallization and Solubility Studies
Takayoshi Kawasaki、Maki Tokuhiro、Nobuo Kimizuka 等 4 位作者2001-06-21Journal of the American Chemical Society
Spontaneous formation of complementary hydrogen-bond pairs and their hierarchical self-assembly (reconstitution) into chiral supramolecular membranes are achieved in water by mixing amphiphilic pairs of glutamate-derived melamine 6 and ammonium-derivatized azobenzene cyanuric acid 4. Electron microscopy is used to obs…
Luminescence and Fluorescent MaterialsPhotoreceptor and optogenetics researchSupramolecular Self-Assembly in Materials
F. Much、M. Ahr、M. Biehl 等 4 位作者2001-06-21arXiv
We determine the critical layer thickness for the appearance of misfit dislocations as a function of the misfit between the lattice constants of the substrate and the adsorbate from Kinetic Monte Carlo (KMC) simulations of heteroepitaxial growth. To this end, an algorithm is introduced which allows the off-lattice sim…
Materials Science
J. L. Gavilano、D. Rau、Sh. Mushkolaj 等 6 位作者2001-06-21arXiv
We report the observation of an anomalous {27}Al-NMR response of a single grain Al_{72.4}Pd_{20.5}Mn_{7.1} icosahedral quasicrystal at low temperatures. In an external magnetic field of 6 T and upon decreasing temperature, we observe a sharp 100 % increase of the resonance linewidth at 2.5 K. No further changes of the…
Materials Science
Shang-Fen Ren、G. Qin2001-06-21arXiv
By means of a microscopic valence force field model, a series of novel microscopic interface phonon modes are identified in shell quantum dots(SQDs) composed of a GaAs quantum dot of nanoscale embedded in an AlAs shell of a few atomic layers in thickness. In SQDs with such thin shells, the basic principle of the conti…
Materials Science
Mark I. Shliomis2001-06-21arXiv
Comment on the paper "Novel Convective Instabilities in a Magnetic Fluid" by W. Luo, T. Du, and J. Huang, Phys. Rev. Lett., v.82, p.4134 (1999).
Soft Condensed MatterMaterials Science
Guisheng Xu、Haosu Luo、Haiqing Xu 等 4 位作者2001-06-21Physical review. B, Condensed matter
In the principle of optical crystallography and crystal symmetry, it is found that at room temperature, the 0.67 PMN-0.33 PT crystals near the morphotropic phase boundary composition present not only a rhombohedral $3m$ phase but also a monoclinic m phase with various angles of polarization rotation, the third ferroel…
Ferroelectric and Piezoelectric MaterialsMultiferroics and related materialsAcoustic Wave Resonator Technologies
A. Ozerov、I. Ispolatov、J. Lees2001-06-21arXiv
A model is proposed to explain temporal patterns of activity in a class of periodically exploding Strombolian-type volcanos. These patterns include major events (explosions) which follow each other every 10-30 minutes and subsequent tremor with a typical period of 1 second. This two-periodic activity is thought to be…
physics.geo-phMaterials Science
Alexei V. Tkachenko2001-06-21arXiv
We study theoretically a binary system in which an attraction of unlike particles is combined with a type-independent soft core repulsion. The possible experimental implementation of the system is a mixture of DNA-covered colloids, in which both the repulsion and the attraction may be induced by DNA solution. The syst…
Soft Condensed MatterMaterials Sciencecond-mat.stat-mechq-bio
Yasushi Honda、Tsuyoshi Horiguchi2001-06-21arXiv
We investigate an $S=1/2$ two-leg spin ladder with a cyclic four-spin exchange interaction whose interaction constant is denoted by $J_4$, by using the density matrix renormalization group method. The interchain and the intrachain interaction constant are denoted by $J_{rung}$ and $J_{\rm leg}$, respectively and assum…
Materials Sciencecond-mat.stat-mech
B. P. Binks、Simon O. Lumsdon2001-06-21OpenAlex
The preparation, type, and stability of emulsions of oil and water stabilized solely by spherical, monodisperse polystyrene latex particles of different size is described. Two types of behavior occur depending on whether particles remain intact (in the case of cyclohexane) or dissolve to give free polymer chains (in t…
Pickering emulsions and particle stabilizationProteins in Food SystemsSurfactants and Colloidal Systems
Qingxin Zhang、Zhishen Mo2001-06-20�߷��ӿ�ѧ
Analysis of isothermal and nonisothermal crystallization kinetics of nylon 66 was carried out using differential scanning calorimetry (DSC). The commonly used Avrami equation and that modified by Jeziorny were used, respectively, to fit the primary stage of isothermal and nonisothermal crystallizations of nylon 66. In…
Polymer crystallization and propertiesbiodegradable polymer synthesis and propertiesPolymer Nanocomposites and Properties
Peter Sondergeld、W. Schranz、A. Tröster 等 8 位作者2001-06-20Physical review. B, Condensed matter
The results of dielectric measurements $(f=10 \mathrm{kHz}--400 \mathrm{MHz})$ of the natural mineral lawsonite are presented in the region of the ferroelectric transition ${(T}_{2}\ensuremath{\approx}124 \mathrm{K}).$ The dielectric behavior is characterized by a small value of the Curie-Weiss constant ${(C}_{\mathrm…
Glass properties and applicationsMaterial Dynamics and PropertiesSolid-state spectroscopy and crystallography
Song‐Ho Chong、W. Götze、Matthias Mayr2001-06-20Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
The mean-squared displacement (MSD) of a hard sphere and of a dumbbell molecule consisting of two fused hard spheres immersed in a dense hard-sphere system is calculated within the mode-coupling theory for ideal liquid-glass transitions. It is proven that the velocity correlator, which is the second time derivative of…
Thermodynamic properties of mixturesMaterial Dynamics and PropertiesPhase Equilibria and Thermodynamics
Jan Swenson、Stefan Adams2001-06-20Physical review. B, Condensed matter
The reverse Monte Carlo RMC method has shown to be a useful tool for extracting structural properties from diffraction data of disordered systems, such as ion-conducting glasses. In this paper we investigate ion conduction in Ag-based superionic glasses by simple random-walk simulations based on the bond-valence infor…
Advanced Condensed Matter PhysicsMaterial Dynamics and PropertiesGlass properties and applications
Anna Machová2001-06-20Modelling and Simulation in Materials Science and Engineering
The paper examines different definitions of the local atomic stress at zero temperature for homogeneous and inhomogeneous strain across an interface. It is shown that if inhomogeneous straining occurs within the range of interatomic interaction, then the interplanar concept (based on force balance) describes better th…
Microstructure and mechanical propertiesHigh-pressure geophysics and materialsAdvanced ceramic materials synthesis
David E. Fleming、Wilhelm van Bronswijk、Rosemary L. Ryall2001-06-20Clinical Science
To assess the binding of individual amino acids to the principal calcium minerals found in human kidney stones, the adsorption of 20 amino acids on to calcium oxalate monohydrate, CaHPO4*2H2O, Ca3(PO4)2 and Ca5(PO4)3OH crystals was determined over the physiological urinary pH range (pH 5-8) in aqueous solutions. All a…
Calcium Carbonate Crystallization and InhibitionKidney Stones and Urolithiasis TreatmentsBone Tissue Engineering Materials