Materials Literature
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The cooling of hydrocarbon‐rich gases in industrial processes often leads to severe fouling, which impedes heat recovery, restricts operative conditions, and increases maintenance costs. The present work investigates whether self‐cleaning surfaces represent a possible solution to overcome this technological bottleneck…
N (CNO) network derived from metal-organic framework (HKUST-1) was innovatively synthesized by a rapid and green microwave irradiation method. This method can produce CNO multilayers efficiently, which paves a way for practical application of the nanosheets. Structural characterization and synthesis processes of CNO n…
Abstract A lead‐free piezoelectric material whose performance is comparable to that of market‐dominant lead‐based ones has been strongly desired for the development of environmentally friendly piezoelectric devices. In spite of intensive research activities, however, few effective alternatives have been found due to s…
Understanding the responses of ionic block copolymers to applied electric fields is crucial when targeting applications in areas such as energy storage, microelectronics, and transducers. This work shows that the identity of counterions in ionic diblock copolymers substantially affects their responses to electric fiel…
We study the Landau levels in curved graphene sheets by measuring the discrete energy spectrum in the presence of a magnetic field. We observe that in rippled graphene sheets, the Landau energy levels satisfy the same square root dependence on the energy quantum number as in flat sheets, [Formula: see text]. Though, w…
Abstract Dense Ti 3 SiC 2 ‐SiC, Ti 4 SiC 3 ‐SiC, and Ti 3 SiC 2 ‐Ti 4 SiC 3 ‐SiC ceramic composites were fabricated through carbosilicothermic reduction of TiO 2 under vacuum, followed by hot pressing of the as‐synthesized products under 25 MPa at 1600°C. In the reduction step, SiC either alone or in combination with…
The paper addresses the swelling of polyelectrolyte multilayers (PEMs) at varying humidity. In particular, a new model will be presented, which takes the gradual filling of voids into account. Absorption of water results in PEM swelling. This absorbed water can be distinguished into swelling and void water. Swelling w…
The influence of high energy ion beam [swift heavy ion (SHI)] on CdS quantum dots that are used as a sensitizer in a solar cell is studied in this letter. A 100-MeV copper ion beam is selected for irradiation experiment with doses of 1 × 1011and 3 × 1011ions/cm2. With an increase in the dose, the optical absorption ed…
The lack of inversion symmetry in semiconducting transition metal dichalcogenide monolayers (TMDMs) enables a considerable intrinsic piezoelectricity, which opens prospects for atomically thin piezotronics and optoelectronics. Here, based on the tight-binding (TB) approach and Berry phase expression for electronic pol…
Several ruffled β-to- ortho -phenyl monofused metalloporphyrins (M II MFPs) with 1,3-indanedione functionality have been synthesized by oxidative fusion of free base trans -chlorins via nickel insertion followed by the skeletal rearrangement of macrocycle. The synthesized monofused porphyrins exhibited red-shifted ele…
We numerically investigate the phase diagram of the giant-piezoelectric $(1\ensuremath{-}x)\mathrm{Ba}({\mathrm{Zr}}_{0.2}{\mathrm{Ti}}_{0.8}){\mathrm{O}}_{3}\ensuremath{-}x({\mathrm{Ba}}_{0.7}{\mathrm{Ca}}_{0.3}){\mathrm{TiO}}_{3}$ system, treating the ions either as classical objects (via classical Monte Carlo or CM…
Here we report an optimized hot-injection method and a phase transfer strategy for the synthesis of water-soluble CuInS2 QDs with desired properties. The structure and morphology studies demonstrate that the resulting QDs are CuInS2 tetragonal phase with well-defined facets. It is also found that the crystal size grad…
By far the most important members of carbon-based materials family, are graphene, Carbon Nanotube (CNT) and Carbon Nanohorn (CNH). Thanks to their outstanding features and effective applications, have been broadly researched in recent times. Numerous ways have been proposed to synthesize graphene, CNT and CNH. This pa…
It is important to accurately predict the band gaps of crystals, including organic crystals, with low computational cost. Despite the significant underestimation of the crystal band gap by the density functional theory (DFT), a recently proposed Wannier-Koopmans method (WKM) based on DFT calculations seems to yield ac…
This work reports the electrochemical anodization of low-doped n-type silicon in aqueous hydrofluoride (HF) solution without the use of external illumination to generate macroporous silicon with a thin mesoporous transition layer. We have shown that pore formation during the electrochemical anodization of low-doped n-…
The spectrum of a Coulomb impurity in bilayer graphene is investigated as function of the strength of a perpendicular magnetic field for different values of the angular quantum number $m$ and for different values of the gate voltage. We point out fundamental differences between the results from the two-band and four-b…
Wood-based activated carbon microspheres (WACMs) were successfully prepared from Chinese fir. However, the weak thermal stability of the precursors resulted in melting at high activation temperatures, which led to a lower yield and poor adsorption properties. To promote the thermal stability of the precursors in the p…
We present an approach to control resistive switching in metal-ferroelectric contacts using a radially symmetric electric field. In ferroelectrics with significant polarization along the corresponding field lines, the field above a critical threshold will induce polarization discontinuity, a corresponding nanoscale vo…
Cassia absus is used for medicinal purposes for a long time all over the world. In this study, the authors report the antimicrobial potential of C. absus extracts obtained with different solvents. The extract(s) obtained with ethyl acetate yielded the best antibacterial effects because of a rich supply of oxalates and…
Abstract Hierarchical three dimensional (3D) microstructures integrated with low‐dimensional nanomaterials can realize novel properties or improved performance. We report a unique conductive and highly ordered 3D silicon micro‐mesh structure, which is fabricated by standard lithography using a modified plasma etch pro…