An atomic-scale view of cyclocarbon synthesis
Combining organic synthesis with microscopy addresses long-standing bottlenecks in cyclocarbon production
Materials Literature
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Predicting remaining lifetime of drill pipes basing upon the fatigue crack kinetics within a pre-critical period
Purpose is to determine regularities of the development of corrosive fatigue cracks in terms of high-strength drill pipes.
Effect of Wetting and Dewetting Dynamics on Atomic Force Microscopy Measurements
Water bridge dynamics between an atomic force microscopy (AFM) tip and a flat substrate is studied by using a multibody dissipative particle dynamics (MDPD) model. First, the numerical model is validated by comparing the present results of droplet contact angles and liquid bridges with those reported in the literature…
Surface Alloying of a Magnesium Alloy with Zinc Oxide by Taking Advantage of the Permeability of the Magnesium Oxide Film
MgO films would naturally form on a magnesium alloy matrix in the air. They are loose and porous, and the corrosion resistance of magnesium alloys is limited. Here, we demonstrate that such a loose MgO film is not merely useless in the protection of magnesium alloys, as metallic atoms could penetrate the MgO film to f…
Exciton states and absorption spectra in freestanding monolayer transition metal dichalcogenides: A variationally optimized diagonalization method
The comprehensive analyses of exciton states and absorption spectra from freestanding monolayer transition metal dichalcogenides such as ${\mathrm{MoS}}_{2}, {\mathrm{MoSe}}_{2}, {\mathrm{MoTe}}_{2}, {\mathrm{WS}}_{2}$, and ${\mathrm{WSe}}_{2}$ are theoretically presented in the Wannier\ensuremath{-}Mott exciton theor…
Effects of the Projectile Geometries on Normal and Oblique Penetration Using the Finite Cavity Pressure Method
In this work, the penetration depth of a projectile with various geometries was analyzed using the cavity pressure method. The finite cavity method combines an analytical method and the finite element method and considers the deformation of the projectile only. This simulation method was implemented to ABAQUS/Explicit…
Perpendicular magnetic anisotropy in La1−xSrxCoO2.5+δ/La2/3Sr1/3MnO3/La1−xSrxCoO2.5+δ trilayers (x=0.05–0.5)
Perpendicular magnetic anisotropy (PMA) of magnetic materials has received much attention because of its potential application to spintronics devices. In general, the tensely strained $(001)\text{\ensuremath{-}}\mathrm{L}{\mathrm{a}}_{2/3}\mathrm{S}{\mathrm{r}}_{1/3}\mathrm{Mn}{\mathrm{O}}_{3}$ (LSMO) layer is easy pl…
Electromagnetically induced transparency-like effect with circular polarization selectivity in bilayered metamaterial
We propose a metamaterial of triple-arc resonator (TAR) to realize electromagnetically induced transparency-like (EIT-like) effect with circular polarization selectivity. The metamaterial is composed of single-arc resonator (SAR) and a double-arc resonator (DAR) as two bright modes. EIT-like transmission with circular…
Design for Sustainability with Biodegradable Composites
Many of the petroleum-based materials and products are causing problems with sustainability of resources and disposal at the end of their lives. Such problems can be solved if biodegradable materials from renewable resources are used in product design. For a material to be fully biodegradable, all its constituents mus…
Coupled Plasma-Catalytic System with Rang 19pr Catalyst for Conversion of Tar
Abstract A coupled plasma-catalytic system (CPCS) for the conversion of toluene was investigated and compared to the homogeneous system of gliding discharge plasma. Toluene was used as a model compound, which is present in tars. The study was carried out at atmospheric pressure, in a gas composition similar to the one…
Doped Zinc Oxide Nanostructures for Photovoltaic Solar Cells Application
Zinc oxide and doping effects of Cu on its structural, morphological, optical, and surface wettability properties and the consequent influence on photoelectrochemical solar cell performance has been reviewed. Cu dopant in the doping solution is varied in the range of 1 to 5 at.% which significantly affected the proper…
Investigating the Interaction of Nanodiamonds with Human Serum Albumin and Induced Cytotoxicity
Nanodiamonds (NDs) have been recognized as emerging carbon-based delivery vehicles due to their biocompatibility. NDs were reported to be nontoxic and suited for biomedical applications in the complete cell culture medium. However, in this study, the cytotoxicity of NDs in serum-free medium was studied and indicated t…
Thermochemistry of the ZrO 2 –SrO System: From enthalpies of formation and heat capacities of the compounds to the phase diagram
Abstract The thermodynamics of the ZrO 2 –SrO system is of interest for the optimization of synthesis and applications of functional materials and high‐temperature structural ceramics. Earlier data on phase relationships and thermodynamic properties of the system are unfortunately scattered and inconsistent. In this s…
Epitaxial Growth of Thin Films
Epitaxial thin film heterostructures are critical for integrating multi-functionality on a chip and creating smart structures for next-generation solid-state devices. Here, we discuss the traditional lattice matching epitaxy (LME) for small lattice misfit and domain matching epitaxy (DME), which handles epitaxial grow…
Peculiar Wetting of N,N-Dimethylformamide: Expansion, Contraction, and Self-Running
The nonvolatile N, N -dimethylformamide (DMF) droplet can display peculiar wetting behavior on some substrates such as poly(methyl methacrylate), flame-treated brass, and sapphire. Similar to the expansion of a water drop on a total wetting surface, the DMF droplet shows a spontaneous spreading initially but its sprea…
Influence of Gd doping on the visible-light photocatalytic activity and magnetic properties of BiFeO3 particles
In the present study, Gd-doped BiFeO 3 (GBFO) particles were synthesized using the sol-gel technique. The influence of Gd doping on the structural, morphological, photocatalytic, and magnetic properties of the GBFO particles was then investigated. Structural analyses revealed that a gradual crystal symmetry transition…
Fabry-Pérot Huygens' metasurfaces: On homogenization of electrically thick composites
Realization of the anomalous refraction effects predicted by Huygens' metasurfaces (HMS) has required tedious and time-consuming trial-and-error numerical full-wave computations. It is shown herein that these requirements can be alleviated for transverse magnetic propagation by a periodic dielectric-based HMS consisti…
Functional Models of the Nickel Pincer Nucleotide Cofactor of Lactate Racemase
A novel nickel pincer cofactor was recently discovered in lactate racemase. Reported here are three synthetic nickel pincer complexes that are both structural and functional models of the pincer cofactor in lactate racemase. DFT computations suggest the ipso-carbon atom of the pyridinium pincer ligands act as a hydrid…
Vibrationally Broadened Optical Spectra of Selected Radicals and Cations Derived from Adamantane: A Time-Dependent Correlation Function Approach
Diamondoids are hydrogen-saturated molecular motifs cut out of diamond, forming a class of materials with tunable optoelectronic properties. In this work, we extend previous work on neutral, closed-shell diamondoids by computing with hybrid density functional theory and time-dependent correlation functions vibrational…
Quantum nanoconstrictions fabricated by cryo-etching in encapsulated graphene
We report on a novel implementation of the cryo-etching method, which enabled us to fabricate low-roughness hBN-encapsulated graphene nanoconstrictions with unprecedented control of the structure edges; the typical edge roughness is on the order of a few nanometers. We characterized the system by atomic force microsco…