Materials Literature
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Low cost, large area, lightweight, stretchable piezoelectric films, based on space-charge electret with a foam structure (i.e., ferroelectrets or piezoelectrets), have been fabricated by using commercially available irradiation cross-linked poly(propylene) (IXPP) foam sheets. Piezoelectric d33 coefficients are as high…
An improved and eco‐friendly procedure has been developed to generate mesoporous silica‐supported palladium nanoparticles (SiO2@PdNP) that could be used as a sustainable heterogeneous Pd catalyst for phosphine‐free Suzuki–Miyaura and Heck coupling reactions with excellent turnover number and turnover frequency. The pr…
In this paper, we investigate the nonlinear observer designs to estimate the ammonia coverage ratio in the diesel engine selective catalytic reduction (SCR) systems. The ammonia coverage ratio is an important variable due to its critical role in the SCR NOx conversion and the ammonia slip. However, the ammonia coverag…
LiFePO 4 typically crystallizes in the olivine-type phase (denoted as α-phase hereafter). When high pressure (65 kbar) and elevated temperature (900 °C) are applied, the α-LiFePO 4 transforms into a high-pressure phase (denoted as β-phase hereafter). Here, we report a facile approach to directly tailor the two polymor…
Abstract This article reviews the current state of the art in understanding twinning-induced plasticity (TWIP) steels with an emphasis on linking microstructure to mechanical behavior by means of microstructure-aware constitutive models. A materials selection exercise is conducted to substantiate that TWIP steels are…
Solid polymer electrolytes have been prepared by solution casting technique. Carboxy methylcellulose (CMC)-ammonium nitrate (AN) films were studied with varied AN salt concentration from 5-50 wt.% at ambient temperature. X-ray diffraction (XRD) pattern shows the amorphous nature of polymer electrolyte samples. IR-spec…
In this study, aqueous emulsion polymerization of n-butyl acrylate is performed in batch conditions without surfactants using a poly(acrylic acid)-trithiocarbonate macro-RAFT agent to control the polymerization and to stabilize the emulsion. According to the polymerization-induced self-assembly (PISA) approach, well-d…
In this paper, we investigate the enhancement-mode (E-mode)${\rm LaLuO}_{3}$(LLO)-AlGaN/GaN metal-insulator-semiconductor high-electron mobility transistors (MIS-HEMTs) fabricated using fluorine (F) plasma ion implantation with a gate-dielectric-first planar process. The E-mode MIS-HEMTs exhibit a threshold voltage$(V…
Abstract A crystalline porous metal‐organic framework Cu2(BPDC)2(BPY) (BPDC=4,4′‐biphenyldicarboxylate, BPY=4,4′‐bipyridine) was synthesized and characterized by several techniques including XRD, SEM, TEM, thermogravimetric analysis, FTIR, atomic absorption spectrophotometry, hydrogen temperature‐programmed reduction,…
This work presents the synthesis of 1D aligned Pt–Ni nanostructures with ultrahigh aspect ratio (>1000) based on the anodic aluminum oxide (AAO) template and their composition- and aspect-ratio-dependent catalytic performances to methanol oxidation reaction (MOR). The 1D aligned Pt–Ni nanostructures were electrochemic…
Ring-opening metathesis polymerization of a series of 3-substituted cyclooctenes (3-MeCOE, 3-HexCOE, and 3-PhCOE) initiated by various Mo and W MAP complexes leads to cis,HT-poly(3-RCOE) polymers. The apparent rate of polymerization of 3-HexCOE by W(N-t-Bu)(CH-t-Bu)(Pyr)(OHMT) ( 1c; Pyr = pyrrolide; OHMT = O-2,6-Mesit…
NH 4 F is demonstrated to be a promising mineralizer for the acidic ammonothermal crystal growth of GaN. In comparison with other acidic mineralizers such as NH 4 Cl, NH 4 Br, and NH 4 I, NH 4 F behaves distinctively different. First, NH 4 F affords a negative temperature gradient for crystal growth of GaN in supercri…
Although polyazine extractants have been extensively studied as agents for partitioning trivalent actinides from lanthanides, an explanation for why certain azine compositions succeed and others fail is lacking. To address this issue, density functional theory calculations were used to evaluate fundamental properties…
We have prepared high-quality, densely packed, self-assembled monolayers (SAMs) of carboxy-terminated alkyl chains on Si(111). The samples were made by thermal grafting of methyl undec-10-enoate under an inert atmosphere and subsequent cleavage of the ester functionality to disclose the carboxylic acid end-group. X-ra…
Solar cells of which the efficiency is not limited by the Shockley-Queisser limit can be obtained by integrating a luminescent spectral conversion layer into the cell structure. We have calculated the maximum efficiency of state-of-the-art c-Si, pc-Si, a-Si, CdTe, GaAs, CIS, CIGS, CGS, GaSb, and Ge solar cells with an…
We present a computational simulation study of non-equilibrium streamer discharges in a coaxial electrode and a corona geometry for automotive combustion ignition applications. The streamers propagate in combustible fuel-air mixtures at high pressures representative of internal combustion engine conditions. The study…
The current study demonstrates that the pure-component critical temperatures generated by SAFT-type equations of state (EoS) are independent of the hard-core diameter (σ). This remarkable feature leads to the development of a simple tool, called a global map, for a comprehensive investigation of the sophisticated SAFT…
Nonspherical polymer particles have been efficiently prepared in different morphological crystals of porous coordination polymers (PCPs) by in situ radical polymerization of styrene and methylmethacrylate, followed by removal of the host PCP frameworks in aqueous tetrasodium ethylenediaminetetraacetate (Na-EDTA) solut…
Au-free GaN-based metal-insulator-semiconductor high electron-mobility transistors grown on 150-mm Si substrates are reported. The device characteristics for three different processes are compared: an ohmic-first and a gate-first process with Al2O3-only as gate dielectric and a novel approach with a bilayer gate diele…
A novel photo‐responsive drug carrier that doubles as a photothermal agent with a nanocookie‐like structure is constructed by coating amorphous carbon on a mesoporous silica support self‐assembled on a sheet of reduced graphene oxide. With a large payload (0.88 mmolg−1) of a hydrophobic anticancer drug, (S)‐(+)‐campto…