Materials Literature
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A conceptually appealing and computationally economical course-grained molecular-orbital (MO) theory for extended quasilinear molecular heterostructures is presented. The formalism, which is based on a straightforward adaptation, by including explicitly the vacuum, of the envelope-function approximation widely employe…
We report observation of intrinsic inverse spin Hall effect in un-doped GaAs multiple quantum wells with a sample temperature of 10 K. A transient ballistic pure spin current is injected by a pair of laser pulses through quantum interference. By time-resolving the dynamics of the pure spin current, the momentum relaxa…
We report novel graphene nanoribbon (GNR)/semiconductor nanowire (SNW) heterojunction light-emitting diodes (LEDs) for the first time. The GNR and SNW have a face-to-face contact structure, which has the merit of bigger active region. ZnO, CdS, and CdSe NWs were employed in our case. At forward biases, the GNR/SNW het…
Hybrid plasmonic-magnetic nanoparticles possess properties that are attractive in bioimaging, targeted drug delivery, in vivo diagnosis, and therapy. The stability and toxicity, however, of such nanoparticles challenge their safe use today. Here, biocompatible, SiO 2 -coated, Janus-like Ag/Fe 2 O 3 nanoparticles are p…
Here we report a remarkable transformation of carbon nanotubes (CNTs) to nanoribbons composed of a few layers of graphene by a two-step electrochemical approach. This consists of the oxidation of CNTs at controlled potential, followed by reduction to form graphene nanoribbons (GNRs) having smooth edges and fewer defec…
Solution-phase photocatalytic reduction of graphene oxide to reduced graphene oxide (RGO) by titanium dioxide (TiO 2 ) nanoparticles produces an RGO-TiO 2 composite that possesses enhanced charge transport properties beyond those of pure TiO 2 nanoparticle films. These composite films exhibit electron lifetimes up to…
Metamaterial absorbers have attracted considerable attention for applications in the terahertz range. In this Letter, we report the design, fabrication, and characterization of a terahertz dual band metamaterial absorber that shows two distinct absorption peaks with high absorption. By manipulating the periodic patter…
While crystalline two-dimensional materials have become an experimental reality during the past few years, an amorphous 2D material has not been reported before. Here, using electron irradiation we create an sp2-hybridized one-atom-thick flat carbon membrane with a random arrangement of polygons, including four-member…
In this paper, we performed an insulation diagnosis technique for oil-immersed power transformers by an acoustic detection method. Electrode system such as needle to plane electrode was fabricated to simulate a defect of power transformers. In addition, the frequency spectrum of acoustic signals with partial discharge…
The surface condition of n-Si(111) exposed to an acidic fluoride solution under white light illumination is strongly influenced by the applied electrode potential. Photocurrent oscillations at n-Si(111) are investigated in-situ by ellipsometry and Fourier-transform infrared spectroscopy (FTIR). In-situ ellipsometric d…
Elementary kinetic modeling and experimental validation of CO electrooxidation on Ni/YSZ pattern anode
Grazing incidence X-ray diffraction and reflectometry are used to characterize chemically treated cadmium telluride single crystal (c-CdTe) surfaces, amorphous silicon (a-Si) thin films and amorphous oxygenated cadmium telluride( a-CdTe : O) thin layers. In the case of CdTe single crystal surface treated with an oxidi…
Hydroxytriazene compounds (HT) were synthesized and the purity of each hydroxytriazene was checked by physical characteristics and elemental analysis. The synthesized hydroxytriazenes were studied on some neuropharmacological paradigms on mice like behavior, locomotion, sleep, and convulsions using standard procedures…
Charge density wave (CDW) conductors exhibit a rich response to applied electric fields which involves many dynamical degrees of freedom. This complicated dynamics arises from competition between the random pinning of the CDW and the elasticity of the CDW itself. This paper gives an overview of the response of the CDW…
The asymmetric unit of the title heterometallic coordination polymer, {[Cu(3)Yb(2)(C(7)H(3)NO(4))(6)(H(2)O)(12)]·2H(2)O}(n), contains one Yb(III) and two Cu(II) atoms. The Cu(II) atom that is located on an inversion center is N,O-chelated by two pyridine-2,5-dicarboxyl-ate (pdc) anions in a square-planar geometry; the…
Abstract A series of CoFeB/MgO multilayers was fabricated by means of DC/RF magnetron sputtering. It is observed that the electromagnetic properties of the multilayers of CoFeB/MgO are closely related with the thickness of CoFeB sublayers, and the soft magnetic properties of discontinuous multilayers are affected by t…
We show that the distinct differences of low-lying THz-frequency dynamics between type-I clathrates with on-center and off-center guest ions naturally follow from a theoretical model taking into account essential features of the dynamics of rattling guest ions. Our model analysis demonstrates the drastic change from t…
We introduce a new algorithm, which we call the cascaded parameter scan method, to efficiently carry out the scan over magnet parameters in the safety analysis for top-off injection in synchrotron radiation storage rings. In top-off safety analysis, one must track particles populating phase space through a beam line c…
The requirement of high quality electric power supply from utility is a common practice today. Thus, no matter in planning, designing, or system dispatching, it is desired to give un-interrupted electric power to customers. However, when the loading of a distribution system power feeder is too high or the feeder needs…
A mistake was made in the cover picture text of ChemPhysChem 2010, Issue 17. The text should read: The cover picture represents how three chemistries can be readily patterned on a surface by using a combination of colloidal lithography, physical vapour deposition and self-assembled monolayers. Inspired by a ′layer cak…