Materials Literature
按标题、摘要、年份、主题和来源检索公开元数据。结果保留作者、摘要、分类与原始来源链接。
The structure of the oxygen-induced p(4 x 4) reconstruction of Ag(111) is determined by a combination of scanning tunneling microscopy, surface x-ray diffraction, core level spectroscopy, and density functional theory. We demonstrate that all previous models of this surface structure are incorrect and propose a new mo…
The dynamic effects, such as the steering and the screening effects during deposition, on an epitaxial growth (Cu/Cu(001)), is studied by kinetic Monte Carlo simulation that incorporates molecular dynamic simulation to rigorously take the interaction of the deposited atom with the substrate atoms into account. We find…
In order to improve the field emission properties of screen-printed carbon nanotube films, ZnO nanostructures were deposited on multiwall carbon nanotubes (MWNTs) using vapor phase transport method. Based on the combined effect of geometrical structure of MWNT/ZnO, a low turn-on field of ∼0.7V∕μm at current density of…
Here we study incoherent transport through molecular wire treated as a linear chain of absorbers, where the phase-breaking processes are modeled by the use of imaginary point-like potentials. The calculations are performed within a transfer-matrix method of the scattering theory. An analytic expression for the transmi…
Using an extensive series of first-principles density functional calculations, we have constructed a ``first-principles aluminum database'' of thermodynamic properties of binary Al-based alloys with 26 different solute elements, $X$. In all cases, first-principles results are critically compared to experimental data f…
Preface. The Editor. Contributors. Dedication. PART I: ESR FUNDAMENTALS. Chapter 1. Continuous-Wave and Pulsed ESR Methods (Gunnar Jeschke and Shulamith Schlick). Chapter 2. Double Resonance ESR Methods (Gunnar Jeschke). Chapter 3. Calculating Slow-Motion ESR Spectra of Spin-Labeled Polymers (Keith A. Earle and David…
It is shown that the ``hysteresis'' in a polaron model of electron transport through the molecule found by M.Galperin et al. [Nano Lett. 5, 125 (2005)] is an artefact of their ``mean-field'' approximation. The reason is trivial: after illegitimate replacement $\hat{n}^{2}=\hat{n}n_{0},$ where \hat{n} is the electron n…
We have explored the influence of different matrices on the emission line shape of individual homogeneously coated CdSe∕CdS∕ZnS nanocrystals. The results obtained corroborate previous observations of a correlation between blinking events and spectral diffusion, but in addition we have found that the extent of spectral…
We investigate the microwave electrodynamic properties of a single superconducting thin film split-ring resonator (SRR). The experiments were performed in an all-Nb waveguide, with Nb wires and Nb SRRs. Transmission data showed a high-Q stopband for a single Nb SRR ($Q \sim 4.5\times10^4$ at 4.2 K) below $T_c$, and no…
We have investigated the out-of-plane lattice strain related to the ferroelectric transitions in epitaxial BaTiO3 (BTO) films using synchrotron x-ray diffraction. Under either compressive strain or tensile strain, there is evidence for two structural phase transitions as a function of temperature. The transition tempe…
The stationary one-dimensional tight-binding Schredinger equation with a weak diagonal long-range correlated disorder in the potential is studied. An algorithm for constructing the discrete binary on-site potential exhibiting a hybrid spectrum with three different spectral components (absolutely continuous, singular c…
Individual β-Ga2O3 nanowires as solar-blind photodetectors are investigated. The detectors show encouraging advantages to 254nm light. The dark current is on the order of pA. The conductance of the nanowire increases by about three orders of magnitude under 254nm ultraviolet illumination. The upper limits of the respo…
We study the size dependence of thermal conductivity in nanoscale semiconducting systems. An analytical formula including the surface scattering and the size confinement effects of phonon transport is derived. The theoretical formula gives good agreements with the existing experimental data for Si and $\mathrm{GaAs}$…
The most favorable dopants for solid-state hydrogen-storage materials are still considered to be compounds of titanium in spite of intensive research on other catalysts. Here, we show that NaAlH4 doped with ScCl3 is a highly efficient dopant, both with respect to storage capacity and kinetics: 2 mol % ScCl3 exhibits a…
Abstract A novel sol–gel dip‐coating process to fabricate nanocrystalline TiO 2 photocatalytic membranes with a robust hierarchical mesoporous multilayer and improved performance has been studied. Various titania sols containing poly(oxyethylenesorbitan monooleate) (Tween 80) surfactant as a pore‐directing agent to ta…
Abstract Porphyrins, phthalocyanines, and perylenes are compounds with great potential for serving as components of molecular materials that possess unique electronic, magnetic and photophysical properties. In general, a highly specific communication between a large number of these chromophores is required in order to…
Electromigration is increasingly relevant to the physical design of electronic circuits. It is caused by excessive current density stress in the interconnect. The ongoing reduction of circuit feature sizes has aggravated the problem over the last couple of years. It is therefore an important reliability issue to consi…
A previously considered model interpreted a superconductor as an electron gas immersed in a medium with the dielectric constant $ε$ and a certain elasticity, which could be determined by measured sonic speed in the metal. The obtained expression of effective electron-electron interaction (EEI) potential unambiguously…
We consider theoretically liquid rise against gravity in capillaries with height-dependent cross-section. For a conical capillary made from a hydrophobic surface and dipped in a liquid reservoir, the equilibrium liquid height depends on the cone opening angle $α$, the Young-Dupré contact angle $θ$, the cone radius at…
We have investigated the inverted phase formation and the transition from inverted to normal phase for a cylinder-forming polystyrene- block -poly(methyl methacrylate) (PS- b - PMMA) diblock copolymer in solution-cast films with thickness about 300 nm during the process of the solution concentrating by slow solvent ev…