Materials Literature
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Cogging torque is one of the emphases and difficulties of research on permanent magnet (PM) machines. In this paper, an improved analytical model, based on an exact subdomain model idea and Maxwell stress tensor, is applied for calculating a cogging torque of surface-mounted PM machines with auxiliary slots. It can ac…
The spin and orbital configuration of magnetic metal phthalocyanines (MPcs) deposited on metallic substrates are strongly influenced by the rehybridization of the molecular states with the underlying metal. FePc, CoPc, and CuPc isolated molecules are archetypal systems to investigate the interrelationship between magn…
The charge transport mechanism during metal-assisted chemical etching of Si nanowires with contiguous metal films has been investigated. The experiments give a better insight how the charges and reaction products can penetrate to the etching front. The formation of a layer of porous Si between the metal film and the b…
The Deacon process is a sustainable way to recover chlorine from HCl by its oxidation with molecular oxygen. Deacon catalysts need to fulfill both selection criteria: high activity and high stability. In this Review, we introduce and discuss simple descriptors for assessing activity and stability of catalyst materials…
Tridentate thioether ligands, 2–HO–4–R–C 6 H 3 –(C 6 H 4 )CHNH(CH 2 ) 3 SPh [R = H ( L1 ) or −OMe ( L2 )] react with Na 2 PdCl 4, giving palladacycles [PdCl(C –,N,S)] ( 1: (C –,N,S) = L1 –H; 2: (C –,N,S) = L2 –H). The 1 H and 13 C{ 1 H} NMR spectra of ligands and their palladacycles have been found to be characteristi…
Fullerene (Version 4.4) is a general purpose open-source program that can generate any fullerene isomer, perform topological and graph theoretical analysis, as well as calculate a number of physical and chemical properties. The program creates symmetric planar drawings of the fullerene graph and generates accurate mol…
Surface effect often plays a significant role in the pull-in performance of nano-electromechanical systems (NEMS) but limited works have been conducted for taking this effect into account. Herein, the influence of surface effect has been investigated on instability behavior of cantilever nano-actuator in the presence…
We examined the effects of changing the central bridging atom identity from carbon (d-CDT(PTTh 2 ) 2 ) to silicon (d-DTS(PTTh 2 ) 2 ) in the cyclopentadithiophene unit in a small molecule donor material. The substitution left the optical and electrical properties largely unchanged but significantly modified the meltin…
Reaction in aqueous solution of cadmium nitrate, succinic acid (H 2 suc), and one of four possible isomeric dipyridylamide coligands has afforded a series of two-dimensional (2-D) and three-dimensional (3-D) coordination polymers. All were structurally characterized by single-crystal X-ray diffraction. [Cd(suc)(4-pina…
Selective area growth of In(Ga)N/GaN nanocolumns was performed on GaN-buffered Si(111) substrates by plasma-assisted molecular beam epitaxy. Undoped and Si-doped GaN buffer layers were first grown on Si(111) substrates, showing photoluminescence excitonic emission without traces of other low energy contributions, in p…
Exceptional water oxidation (WO) turnover frequencies (TOF=17,000 h(-1)), and turnover numbers (TONs) close to 400,000, the largest ever reported for a metal-catalyzed WO reaction, have been found by using [Cp*Ir(III)(NHC)Cl2] (in which NHC=3-methyl-1-(1-phenylethyl)-imidazoline-2-ylidene) as the pre-catalyst and NaIO…
We demonstrate strong-to-perfect absorption across a wide range of mid-infrared wavelengths (5-12µm) using a two-layer system consisting of heavily-doped silicon and a thin high-index germanium dielectric layer. We demonstrate spectral control of the absorption resonance by varying the thickness of the dielectric laye…
Tissue engineering techniques using novel scaffolding materials offer potential alternatives for managing tendon disorders. An ideal tendon tissue engineered scaffold should mimic the three-dimensional (3D) structure of the natural extracellular matrix (ECM) of the native tendon. Here, we propose a novel electrospun n…
BACKGROUND: Long-term biodistribution of nanomaterials used in medicine is largely unknown. This is the case for alum, the most widely used vaccine adjuvant, which is a nanocrystalline compound spontaneously forming micron/submicron-sized agglomerates. Although generally well tolerated, alum is occasionally detected w…
Mass transfer in zeolite crystals can be enhanced by the introduction of a hierarchical network of auxiliary mesopores. To fully exploit pore engineering in the design of more efficient industrial catalysts, the benefit needs to be demonstrated over technically relevant forms. Here, the influence of shaping on the ads…
Abstract A new ionic current rectification device responsive to a broad range of pH stimuli is established using highly ordered nanochannels of porous anodic alumina membrane with abrupt surface charge discontinuity. The asymmetric surface charge distribution is achieved by patterning the nanochannels with surface ami…
We investigate tree tensor network states for quantum chemistry. Tree tensor network states represent one of the simplest generalizations of matrix product states and the density matrix renormalization group. While matrix product states encode a one-dimensional entanglement structure, tree tensor network states encode…
Soot particle (black carbon) morphology is of dual interest, both from a health perspective and due to the influence of soot on the global climate. In this study, the mass-mobility relationships, and thus effective densities, of soot agglomerates from three types of soot emitting sources were determined in situ by com…
Topological insulators (TIs) have an insulating bulk but a metallic surface. In the simplest case, the surface electronic structure of a three-dimensional (3D) TI is described by a single two-dimensional (2D) Dirac cone. A single 2D Dirac fermion cannot be realized in an isolated 2D system with time-reversal symmetry,…
Abstract New active and selective catalyst compositions for the hydrogenation of CO2 to mainly fuel‐type higher hydrocarbons were developed by application of an evolutionary strategy. It was shown that Fe and K supported on TiO2 and modified by Cu plus other modifiers resulted in highest selectivity for C5–C15 hydroca…