The chemistry of nitroxide radicals in the molecular design of magnets
The state of the art of the chemistry of nitroxide radicals promising for the design of molecular magnets is considered.
Materials Literature
文献浏览
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。
Morphology and Refractive Index Sensitivity of Gold Island Films
The growing interest in recent years in gold island films prepared by vapor deposition on transparent substrates is largely attributed to the prominent localized surface plasmon (SP) extinction associated with nanostructured metal films. In the present study, two types of evaporated Au island films were investigated:…
The interlayer screening effect of graphene sheets investigated by Kelvin probe force microscopy
We report on the interlayer screening effect of graphene using Kelvin probe force microscopy (KPFM). By using a gate device configuration that enables the supply of electronic carriers in graphene sheets, the vertical screening properties were studied from measuring the surface potential gradient. The results show lay…
Hazards and Risks of Engineered Nanoparticles for the Environment and Human Health
The objectives of this article are to: (1) investigate the current state of knowledge of the risks of engineered nanoparticles for the environment and human health, (2) estimate whether this knowledge is sufficient to facilitate their comprehensive and effective risk assessment and (3) provide recommendations on futur…
High-Pressure Routes in the Thermoelectricity or How One Can Improve a Performance of Thermoelectrics
High pressure has a strong impact on materials. In regards to thermoelectrics, pressure is able to significantly improve their thermoelectric (TE) performance (i.e., power factor and figure of merit), and for this reason, pressure is a powerful tool for energy conversion technologies. This paper reviews studies on the…
Well-Aligned ZnO Nanowire Arrays Prepared by Seed-Layer-Free Electrodeposition and Their Cassie−Wenzel Transition after Hydrophobization
We report a facile electrochemical route for the one-step fabrication of ZnO nanowire (NW) arrays. The method is seed-layer-free, and the NWs are directly attached to a fluorine-doped tin oxide (FTO) substrate. The effects of growth temperature, precursor concentration, substrate etching, and deposition time on the la…
Hemocompatible Mixed-Charge Copolymer Brushes of Pseudozwitterionic Surfaces Resistant to Nonspecific Plasma Protein Fouling
In this work, the hemocompatibility of a sulfobetaine-like copolymer brush resulting from a mixed-charge copolymerization of the positively charged 11-mercapto-N,N,N-trimethylammonium chloride (TMA) and negatively charged 11-mercaptoundecylsulfonic acid (SA) was studied. Mixed charge distribution in the prepared poly(…
Graphite based Schottky diodes formed on Si, GaAs, and 4H-SiC substrates
We demonstrate the formation of semimetal graphite/semiconductor Schottky barriers where the semiconductor is either silicon (Si), gallium arsenide (GaAs), or 4H-silicon carbide (4H-SiC). Near room temperature, the forward-bias diode characteristics are well described by thermionic emission, and the extracted barrier…
Lattice Boltzmann Computation of Plasma Jet Behaviors : part II Argon-Nitrogen Mixture
. Plasma jets are a high temperature flows, then all physical parameters are temperature dependent. This work aims to address the issue of simulating plasma-jet from the point of view of extending the applications to simulating flows with temperature-dependent diffusion parameters (viscosity and diffusivity), focusing…
Magnetization of graphane by dehydrogenation
Using first principles calculations, we show that each hydrogen vacancy created at graphane surface results in a local unpaired spin. For domains of hydrogen vacancies the situation is, however, complex and depends on the size and geometry of domains, as well as whether the domains are single or double sided. In singl…
High-pressure stability and compressibility of APO4 (A = La, Nd, Eu, Gd, Er, and Y) orthoposphates: A synchrotron powder x-ray diffraction study
Room temperature angle-dispersive x-ray diffraction measurements on zircon-type YPO4 and ErPO4, and monazite-type GdPO4, EuPO4, NdPO4, and LaPO4 were performed in a diamond-anvil cell up to 27 GPa using neon as pressure-transmitting medium. In the zircon-structured oxides we found evidence of a reversible pressure-ind…
Half integer quantum Hall effect in high mobility single layer epitaxial graphene
The quantum Hall effect, with a Berry’s phase of π is demonstrated here on a single graphene layer grown on the C-face of 4H silicon carbide. The mobility is ∼20 000 cm2/V⋅s at 4 K and 15 000 cm2/V⋅s at 300 K despite contamination and substrate steps. This is comparable to the best exfoliated graphene flakes on SiO2 a…
Magnetization reversal in amorphous Fe/Dy multilayers: a Monte Carlo study
The Monte Carlo method in the canonical ensemble is used to investigate magnetization reversal in amorphous transition metal - rare earth multilayers. Our study is based on a model containing diluted clusters which exhibit an effective uniaxial anisotropy in competition with random magnetic anisotropy in the matrix. W…
Adsorption on a Surface with Varying Properties
We propose a self-consistent model taking into account variations in adsorption properties of the adsorbent surface in the process of adsorption--desorption of molecules of gas on it. We introduce a dimensionless coupling parameter that characterizes the interaction of an adsorbed molecule with polarized medium. It is…
Calculation of Cu/Ta interface electron transmission and effect on conductivity in nanoscale interconnect technology
Resistivity augmentation in nanoscale metal interconnects is a performance limiting factor in integrated circuits. Here we present calculations of electron scattering and transmission at the interface between Cu interconnects and their barrier layers, in this case Ta. We also present a semiclassical model to predict t…
Nonlocal Electronic Spin Detection, Spin Accumulation and the Spin Hall effect
In recent years, electrical spin injection and detection has grown into a lively area of research in the field of spintronics. Spin injection into a paramagnetic material is usually achieved by means of a ferromagnetic source, whereas the induced spin accumulation or associated spin currents are detected by means of a…
The Spontaneous Generation of Magnetic Moment of Beryllium Dimer on Graphene
Graphene has various potential applications in electronics and scientists are seeking to introduce magnetic properties on graphene. Here we report our theoretical findings that a local magnetic moment as large as 1 $μ_B$ can be generated from the adsorption of the diamagnetic beryllium dimer on perfect diamagnetic gra…
Direct and indirect CeO2nanoparticles toxicity forEscherichia coliandSynechocystis
Physico-chemical interactions between nanoparticles and cell membranes play a crucial role in determining the cytotoxicity of nanoparticles, which may thereby vary depending on the nature of the target microorganisms. We investigated the responses of two different models of unicellular bacteria to cerium oxide (CeO2)…
Random close packing of disks and spheres in confined geometries
Studies of random close packing of spheres have advanced our knowledge about the structure of systems such as liquids, glasses, emulsions, granular media, and amorphous solids. In confined geometries, the structural properties of random-packed systems will change. To understand these changes, we study random close pac…
Infrared Radiative Properties of Heavily Doped Silicon at Room Temperature
This paper describes an experimental investigation on the infrared radiative properties of heavily doped Si at room temperature. Lightly doped Si wafers were ion-implanted with either boron or phosphorus atoms, with dosages corresponding to as-implanted peak doping concentrations of 1020 and 1021 cm−3; the peak doping…