Materials Literature
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We demonstrate the generic value of a rigorous analysis of spike shapes observed in nanoimpact experiments. To this end, we investigate the electrochemical doping of insoluble nanoparticles impacting on a biased electrode surface and develop an analytical model of the doping process is developed that accounts for the…
The effects of hydrogen charging on the mechanical response of FCC Ni and Pd under nanoindentation are systematically investigated by molecular dynamics simulations. Simulations consider a random H distribution and time scales prevent any diffusion of H during the simulations. Hydrogen charging is then found to reduce…
To achieve uniform carbon coating on TiO2 nanomaterials, high temperature (>500 °C) annealing treatment is a necessity. However, the annealing treatment inevitably leads to the strong phase transformation from TiO2(B) with high lithium ion storage (LIS) capacity to anatase with low LIS one as well as the damage of nan…
The heats of formation and the normalized clustering energies (NCEs) for the group 4 and group 6 transition metal oxide (TMO) trimers and tetramers have been calculated by the Feller-Peterson-Dixon (FPD) method. The heats of formation predicted by the FPD method do not differ much from those previously derived from th…
Ta 3-x M x N y (M = Re, Fe, Co; x = 0, 0.25, 0.5, 1) materials with different microstructural features ( e.g. surface area) were successfully prepared using different synthesis techniques. The dependence of nitrogen transfer properties upon tantalum nitride microstructure and its chemical composition was evaluated usi…
Wearable electronics textiles are a new emerging phenomenon. These are textiles that incorporate electrical properties, for example heating, light emitting, sensing, etc., and are now being rapidly developed due to the creation of new types of fibers and fiber composites. The different ways that can be used to combine…
Novel organic pyridinium ylide sensitizers (NO109-111) consisting of various anchoring groups were synthesized and characterized for applications in dye sensitized solar cells. Compared with the pyridine-N-oxide dye (NO108), the ylide sensitizers with strong electron-withdrawing acceptors exhibited dominant ultraviole…
With the limited supply of fossil fuels and their adverse effect on the climate and the environment, it has become a global priority to seek alternate sources of energy that are clean, abundant, and sustainable. While sources such as solar, wind, and hydrogen can meet the world's energy demand, considerable challenges…
The three squaraines (SQs) here indicated as VG1-C8, VG10-C8, and VG11-C8 (Figure 1 ) have been synthesized and employed as dye sensitizers of p -type dye-sensitized solar cells ( p -DSCs) when screen-printed NiO is the nanoporous photocathode. The photoelectrochemical performance of the three differently sensitized p…
ABSTRACT A novel series of homo‐, bi‐, and mononuclear Ni(II)‐based catalysts (BNC n n = 1–4, MNC 4 ) were used for ethylene polymerization. The optimum conditions for the catalyst BNC 4 (the highest catalytic activity) was obtained at [Al]/[Ni]=2000/1, T p = 42 °C, and t p = 20 min that was 1073 g PE/mmol Ni h. In th…
ADVERTISEMENT RETURN TO ISSUECommunicationNEXTLow Cost and Solution Processed Interfacial Layer Based on Poly(2-ethyl-2-oxazoline) Nanodots for Inverted Perovskite Solar CellsWei Chen, Yudong Zhu, Yizhe Yu, Leiming Xu, Guining Zhang, and Zhubing He*View Author Information Department of Materials Science and Engineerin…
Electronic applications that offer flexibility and stretchability have attracted increasing interest over the past few years because of their potential applications in, for example, electronic skin and bio‐inspired devices, where electronics based on current wafer‐based technology are not suitable. Metal‐oxide‐based b…
Femtosecond broadband photoluminescence studies are presented for Ir(ppy) 3 ( Ir1 ), Ir(ppy) 2 (pic) ( Ir2 ), Ir(ppy) 2 (bpy)(PF 6 ) ( Ir3 ), Ir(ppz) 3 ( Ir4 ), and Ir(ppz) 2 dipy ( Ir5 ) (where ppy = 2-phenylpyridine, pic = picolinate, bpy = 2,2′-bipyridine, ppz = 1-phenylpyrazole, and dipy = 5-phenyldipyrrinato) in…
A strategy for increasing the conversion efficiency of organic photovoltaics has been to increase the VOC by tuning the energy levels of donor and acceptor components. However, this opens up a new loss pathway from an interfacial charge transfer state to a triplet exciton (TE) state called electron back transfer (EBT)…
The hydrogen evolution reaction (HER) on an electrodeposited a-MoS2 electrode was investigated by a surface-selective electrochemical titration technique by application of surface interrogation scanning electrochemical microscopy. In a mildly acidic (pH 4.6) environment, the saturated surface hydride coverage of MoS2…
We have investigated the structural, electronic, and magnetic properties of the pyrochlore iridates ${\mathrm{Eu}}_{2}{\mathrm{Ir}}_{2}{\mathrm{O}}_{7}$ and ${\mathrm{Pr}}_{2}{\mathrm{Ir}}_{2}{\mathrm{O}}_{7}$ using a combination of resonant elastic x-ray scattering, x-ray powder diffraction, and resonant inelastic x-…
The ferrocene/ferrocenium (Fc 0/+ ) redox couple is regarded as a kinetically facile process under voltammetric conditions. It also possesses a nearly “solvent independent” formal potential, and for this reason is commonly used as a “reference” redox system for electrochemical studies in nonaqueous electrolyte media.…
In vitro experiments provide a solid basis for understanding the interactions between particles and biological systems. An important confounding variable for these studies is the difference between the amount of particles administered and that which reaches the surface of cells. Here, we engineer a hydrogel-based nano…
Probes for monitoring protein aggregation with a variety of photophysical properties are of importance for the fundamental understanding of the aggregation process as well as for drug discovery. In this manuscript we report the photoluminescence response of the metal dipyridophenazine complex [Re(CO)3(dppz)(Py)](+) in…
The vinyl addition polymerization of norbornyl-based monomers bearing polar functional groups is often problematic, leading to low molecular weight polymers in poor yield. Herein, we provide proof-of-principle evidence that addition-type homopolymers of siloxane substituted norbornyl-based monomers may be readily synt…