Materials Literature
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The oxidation of NO to NO 2 by oxygen and the influence of water have been investigated on a portion of the Fe−ZSM5 which contains 5 T atoms by using the density functional theory. The iron was considered to be a mononuclear species. For the main reaction pathway it is most likely that NO initially adsorbs on Z − [FeO…
Abstract A combined magnetic resonance, photoluminescence, photoconductivity, and Raman scattering study of ZnO is presented. Electron paramagnetic resonance (EPR) and electron‐nuclear double resonance (ENDOR) spectroscopy identify substitutional Al as a binding core of a shallow, effective‐mass‐like donor in ZnO. Bas…
We report a reversibly phototunable photonic crystal system whose reflectance at the stop band position can be modulated by alternating UV/visible (UV/Vis) irradiation. The phototunable system consists of Ag nanoparticles and TiO2 photonic crystal. The stop bands intensity of Ag loaded TiO2 photonic crystals were foun…
Lead‐free tetragonal Ba(Cu 1/3 Nb 2/3 )O 3 (BCN) was chosen to enhance the multiferroic characteristics of rhombohedral BiFeO 3 (BFO). When the aerosol‐deposited film with a composition of 0.9BFO–0.1BCN, chosen to be near that of the morphotropic phase boundary, was annealed at 600°C for 1 h, the film showed superior…
The response of concrete to transient dynamic loading has received extensive attention for both civil and military applications. Accordingly, thoroughly understanding the response and failure modes of concrete subjected to impact or explosive loading is vital to the protection provided by fortifications. Reactive powd…
A density functional tight binding (DFTB) scheme has been applied to functionalized silicon nanocrystals. Using an analytic functional representation of DFTB parameters, the scheme has been used to compute the adsorption energies in the organic functionalization of reconstructed Si(100) and H-terminated Si(111) surfac…
We describe the change of the spatial distribution of the state of polarization occurring during two-dimensional (2D) imaging through a multilayer and in particular through a layered metallic flat lens. Linear or circular polarization of incident light is not preserved due to the difference in the amplitude transfer f…
We investigate the photoresponse of field-effect transistors based on conjugated polymer electrospun fibers. The electrical performances of single fiber transistors are controlled by modulating the channel conductivity under white light illumination. We demonstrate a photoresponsivity up to 100 mA/W for a 500-nm chann…
We present an analytical description of $\ensuremath{\pi}$ electrons of a finite-size bilayer graphene within a framework of the tight-binding model. The bilayered structures considered here are characterized by a rectangular geometry and have a finite size in one or both directions with armchair- and zigzag-shaped ed…
Carbon nanotubes (CNT) possess many unique electrical and mechanical properties that make them useful for a variety of industrial and biomedical applications. They are especially attractive materials for biomedical applications since their dimensions are similar to components of the extracellular matrix. In this study…
INTRODUCTION: The existence of specific carbohydrates on the surface of a wide range of cells provides the opportunity for the development of highly targeted therapeutic agents. The potential applications of such agents are diverse, and include vaccines against pathogenic microorganisms, cancer and HIV, and anti-rejec…
Thin films of the conducting polymer poly(3,4-(1-azidomethylethylene)dioxythiophene) tosylate (PEDOT−N 3 ) can be functionalized by reaction with alkynated reagents in aqueous solutions. Reaction in pure water resulted in surface specific modification of PEDOT−N 3 films, whereas both surface and bulk reaction was achi…
In this letter, we report integration of magnetic and ultrafast-transition properties of VO2 films with antiferromagnetic (AFM) Cr2O3 template layer in the epitaxial VO2/Cr2O3/Al2O3 heterostructure The Cr2O3 is an AFM material, which can pin the spin momentum of ferromagnetic VO2, in addition to providing epitaxial te…
We report on photoluminescence in the 1.7-2.1 μm range of silicon doped with thulium. This is achieved by the implantation of Tm into silicon that has been codoped with boron to reduce the thermal quenching. At least six strong lines can be distinguished at 80 K; at 300 K, the spectrum is dominated by the main emissio…
Abstract Three‐dimensional plotting, a melt‐based technique that involves the guided deposition of extruded filaments, is a promising method for the manufacture of thermoplastic scaffolds for tissue engineering. However, the polymer degrades during processing because of a prolonged residence time at an elevated temper…
This paper describes the development of ultra-small-angle X-ray scattering–X-ray photon correlation spectroscopy (USAXS–XPCS). This technique takes advantage of Bonse–Hart crystal optics and is capable of probing the long-time-scale equilibrium and non-equilibrium dynamics of optically opaque materials with prominent…
A phenyl-based hybrid organic - inorganic coating has been synthesized and processed by hard X-ray lithography. The overall lithography process is performed in a two-step process only (X-rays exposure and chemical etching). The patterns present high aspect ratio, sharp edges, and high homogeneity. The coating has been…
Open‐cell silicon carbide (SiC) foams were fabricated using a newly developed process based on a steam chest molding and carbothermal reduction process. The fabrication process involved the following steps: (i) blending of a mixture of polysiloxane, carbon, hollow microsphere, and sintering additives (AlN–Y 2 O 3 ), (…
Innovative in-pile instrumentation is crucial for advanced experimental programs in research reactors. In this field, we developed a specific acoustic sensor to improve the knowledge of fission gas release in Pressurized Water Reactor (PWR) fuel rods when irradiated in Material Testing Reactors (MTR). In order to perf…
Abstract We discuss test methods and results for determining individual clay platelets shape, size, size distribution, elemental composition, and impurities. Commercial sodium salt varieties of natural, semisynthetic and synthetic clay (Cloisite®‐Na + , Somasif ME‐100, and Topy‐Na + , respectively) were analyzed. In t…