Materials Literature
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The thermoelectric power factor of the narrow-gap semiconductor FeSb 2 is greatly enhanced in comparison to the isostructural homologues FeAs 2 and RuSb 2 . Comparative studies of magnetic and thermodynamic properties provide evidence that the narrow and correlated bands as well as the associated enhanced thermoelectr…
The Raman shift, broadening, and relative Raman intensities of bilayer graphene are computed as functions of the electron concentration. We include dynamic effects for the phonon frequencies and we consider the gap induced in the band structure of bilayer graphene by an external electric field. We show that from the a…
We present a theoretical description of phonon thermal transport and intrinsic lattice thermal conductivity in single-walled carbon nanotubes (SWCNTs). An exact solution of the phonon Boltzmann equation is implemented using an efficient scheme that allows consideration of SWCNTs with a wide range of radii and chiralit…
The strong non-nucleophilic base bis(dimethylamino)naphthalene (Proton Sponge, PS) has been found to promote the rate and extent of H(2)-release from ammonia borane (AB) either in the solid state or in ionic-liquid and tetraglyme solutions. For example, AB reactions in 1-butyl-3-methylimidazolium chloride (bmimCl) con…
Anodic aluminum oxide (AAO) with uniform straight nanochannels was completely coated with pure, N-doped, or B-doped carbon layer. Their electric double layer capacitances are measured in aqueous (1 M sulfuric acid) and organic (1 M Et4NBF4/polypropylene carbonate) electrolyte solutions in order to investigate the capa…
The controllable assembly behavior of diphenylalanine molecules to form nanowires (NWs) and nanotubes (NTs) and their structural details are presented (see figure). The nanoscale morphologies are closely related to molecular arrangements of diphenylalanine as revealed by Rietveld refinement of powder X-ray diffraction…
This study has investigated the wettability of forewings of 15 species of cicadas, with distinctly different wetting properties related to their nanostructures. The wing surfaces exhibited hydrophilic or weak to strong hydrophobic properties with contact angles ranging from 76.8 deg. to 146.0 deg. The nanostructures (…
As an important class of catalytic reactions, the reaction at solid/liquid interfaces is less understood at the atomic level. From a theoretical point of view, the difficulty lies at the simultaneous consideration of the extended solid surface and the dynamic liquid environment. In taking the oxidation of formic acid…
p -Mercaptoaniline (pMA, it is often called p -aminothiophenol (PATP)) can form self-assembled monolayer (SAM) through its thiol group on metal surfaces. It is also an important surface probe molecule in the surface-enhanced Raman spectroscopy (SERS). More recently, pMA has been used in molecular electronics as a sing…
Robust measurement of single quantum bits plays a key role in the realization of quantum computation and communication as well as in quantum metrology and sensing. We have implemented a method for the improved readout of single electronic spin qubits in solid-state systems. The method makes use of quantum logic operat…
Recent startling interest for lanthanide luminescence is stimulated by the continuously expanding need for luminescent materials meeting the stringent requirements of telecommunication, lighting, electroluminescent devices, (bio-)analytical sensors and bio-imaging set-ups. This critical review describes the latest dev…
Stressed liquid crystals are tested with two-wavelength sources and varying intensity inputs in order to further examine their functionality as phase modulating elements in Fourier transform spectroscopy.
INTRODUCTION In most of the discussion presented so far in this book, the quantum character of atoms and electrons has been ignored. The Ising spin models have been an exception, but since the Ising Hamiltonian is diagonal (in the absence of a transverse magnetic field!), all energy eigenvalues are known and the Monte…
A supramolecular assembly of [p-MePyNN]2[Au(CN)2]2 (1) (p-MePyNN+ = 2-(4-N-methylpyridinium)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazo-1-oxyl-3-oxide radical cation) has been synthesized from the combination of p-N-methylpyridinium nitronyl nitroxide radical cations and [Au(CN)2]− anions, and characterized structural…
Solidification processes are complex in nature, involving multiple phases and several length scales. The properties of solidified products are dictated by the microstructure, the macrostructure, and various defects present in the casting. These, in turn, are governed by the multiphase transport phenomena occurring at…
In recent years, use of inverter-driven induction motor in industries has continuously increased because of the demand for energy-saving, variable speed drives. However, these modern inverters introduce additional stresses into the motor's polymer insulation system. To prevent the premature motor failure, the new poly…
To ensure the adhesion of a coating to its substrate it is essential to form a mixture of chemical and physical (or mechanical) bonds between them. To achieve this, the substrate is often roughened or textured in a process known as surface modification (or adhesion promotion).
The feasibility of using activated carbon/nitrogen pair as an alternative to metal hydride–hydrogen combination in a compressor-driven sorption refrigerator (CDSR) has been studied in the present article. The motivation behind the selection of this particular adsorbent/adsorbate pair is due to its high heat of adsorpt…
This paper presents an investigation of the intrinsic magnetoresistance of a ferromagnetic shape memory alloy microactuator for position sensing. The microactuator is designed as a double-beam cantilever made of a polycrystalline Ni–Mn–Ga thin film, which exhibits both a martensitic transformation in the temperature r…
Abstract Rheological behavior was examined for biocomposites of rod‐like silk fibroin (SF) fiber and poly(ε‐caprolactone) (PCL) to investigate an effect(s) of the SF fiber network therein on the mechanical properties. At 160 °C where PCL was a homogeneous melt, linear viscoelastic tests revealed that the SF/PCL compos…