Materials Literature
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Abstract The ZnO films were fabricated on the surface of n-Si(1 1 1) substrate using the sol-gel method, and the graphene was then transferred to its surface for the fabrication of the graphene/ZnO Schottky contact. The results showed that ZnO films presented a strong (0 0 2) preferred direction, and that the particle…
Abstract The electrostriction and strain response of lead‐free Bi 0.5 Na 0.5 TiO 3 –BaTiO 3 piezoceramics with La and Nb [(Bi 0.47 Na 0.47 Ba 0.06 ) 1− x La x Ti 1− y Nb y O 3 ] were modified by optimizing the depolarization temperature. The influences of La and Nb on their phase structure and electrical properties we…
Abstract Zn 2 GeO 4 , as an open-framework structure compound, exhibits negative thermal expansion (NTE) below room temperature. In this work, we investigated the structural stability and phonon modes employing the x-ray diffraction and Raman spectroscopy under high pressure up to 23.0 GPa within a diamond anvil cell,…
The crystallization behavior of poly(butylene adipate) (PBA) in the sheared PBS/PBA blend, as well as on highly orientated poly(butylene succinate) (PBS) substrate, was studied by means of DSC, POM, Raman microscopy, and XRD. The results showed that the pre-existing orientated PBS crystals exhibit a very strong nuclea…
Abstract In thermal reactions of methane with diatomic metal oxides [MO] .+ of the zinc triad (M=Zn, Cd, Hg), protonated formaldehyde [CH 2 OH] + is generated as the major product only for the [HgO] .+ /CH 4 couple. Mechanistic insight is provided by high‐level quantum‐chemical calculations, and relativistic effects a…
Herein active manganese dioxide was prepared by different methods using KMnO 4 and MnSO 4 ·H 2 O as inorganic precursors. The impact of preparation methods on morphology and adsorption performance of the synthesized products was investigated. The experimental results show that the reaction temperature and pressure had…
Single-molecule tracking was used to characterize the mobility of poly(ethylene glycol) chains at a solid–liquid interface over a wide range of surface coverage. Trajectories exhibited intermittent motion consistent with a generalized continuous time random walk (CTRW) model, where strongly confined “waiting times” al…
With nitric acid (HNO 3 ) being at the core of nuclear technology through actinides separation and extraction processes, achieving a complete characterization of the complex processes involving concentrated HNO 3 solutions under ionizing radiation equates bringing efficiency and safety into their operation. In this wo…
A transflective polymer-stabilised blue-phase liquid crystal display (BP-LCD) with partitioned wall-shaped electrodes is proposed. The etched polymer layer contributes to balance the optical phase retardation between transmissive (T) and reflective (R) regions. The partitioned wall-shaped electrodes generate uniform a…
Here we present theoretical results for estimation of electromagnetic field energy density and absorbed energy in dispersive lossy chiral single-component metamaterials which consist of an ensemble of identical helical resonators as inclusions. The shape of the helical resonator can vary over a wide range, from a stra…
Developing methodologies that can efficiently decorate carbon nanotube surfaces with various molecular structures while avoiding damage to nanotube optoelectronic properties is an ongoing challenge. Here, we outline a methodology to perform chemistry on the nanotube surface without perturbing optoelectronic properties…
We have carried out correlated super-resolution and SEM imaging studies of clusters of CdSe/ZnS nanoparticles containing up to ten particles to explore how the fluorescence behavior of these clusters depends on the number of particles, the specific cluster geometry, the shell thickness, and the technique used to produ…
Extending the lifetime of the charge-separated states generated during photoinduced electron transfer in a covalently linked high-potential zinc porphyrin-fullerene dyad, (F 15 P)Zn–C 60, was accomplished by metal–ligand axial coordination of pyridine-functionalized tetrathiafulvalene (TTF) via a dual-electron-transfe…
Abstract A new type of composite based on phenolic foams reinforced with red mud microparticles was prepared using a thermal foaming method. Red mud was ground into ultrafine particles with grain diameters ranging from 1 to 1.5 μm. Silane coupling agent γ ‐ureidopropyltriethoxysilane was used to modify the red mud mic…
In this paper, we report the design, fabrication, and demonstration of a compact, V-band, zero-bias, and linear-in-dB power detector based on our in-house metal–insulator–graphene diode fabricated on a glass substrate. The presented circuit is optimized for the frequency band of 40–75 GHz. The measured prototype shows…
At the same time that two-dimensional (2D) systems open possibilities for new physics and applications, they present a higher challenge for electronic structure calculations, especially concerning excitations. The achievement of a fast and accurate practical model that incorporates approximate quasiparticle correction…
Copolymer composed of two poly(2-vinylpyridine) blocks and one polystyrene block ((P2VP) 2 –PS) with a PS volume fraction (Φ PS ) of 0.44 was synthesized, and their morphologies in bulk and thin films were compared to linear block copolymers (BCPs) having a similar Φ PS (PS- b -P2VP). For the symmetric diblock copolym…
Experiments in gated bilayer graphene with stacking domain walls present topological gapless states protected by no-valley mixing.Here we research these states under gate voltages using atomistic models, which allow us to elucidate their origin.We find that the gate potential controls the layer localization of the two…
Abstract Upconversion emission dynamics have long been believed to be determined by the activator and its interaction with neighboring sensitizers. Herein this assumption is, however, shown to be invalid for nanostructures. We demonstrate that excitation energy migration greatly affects upconversion emission dynamics.…
Diamond is an ideal material for a broad range of current and emerging applications in tribology, quantum photonics, high-power electronics, and sensing. However, top-down processing is very challenging due to its extreme chemical and physical properties. Gas-mediated electron beam-induced etching (EBIE) has recently…