Materials Literature
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Carbon nanotubes are molecular structures of graphitic carbons, which are envisioned as hollow cylindrical bars with outstanding properties. They are the most popular ones among the stiffest and strongest fibers, and have remarkable electronic properties and many more unique characteristics. They are widely used in na…
Polymer composite materials have been prepared of multiwall carbon nanotubes synthesized by aerosol assisted chemical vapor deposition. To give them anisotropic properties, the obtained films have been subjected to tension. As a result of this deformation, the carbon nanotubes have been preferably oriented in the dire…
In this paper, we report quantitative features of the thermoluminescence (TL) responses of commercially available Ge- and Al-doped optical fibers subjected to low-dose electron irradiation. The TL response of Ge-doped optical fibers increases monotonically over the investigated dose range 0.02–0.24 Gy. The Ge-doped op…
The biosynthesis of nanoparticles is in the limelight in modern nanotechnology. Nanobiotechnology has emerged as an important branch of nanotechnology. The present study deals with a novel method for the biosynthesis of silver nanorods using the fungal culture Phoma sorghina. With the treatment of aqueous solution of…
The aim of the present investigation is to probe the influence of organically modified layered silicates (o-montmorilonite, o-MMT) content on mechanical and thermal behaviors of vinyl ester/o-MMT (organoclays) nanocomposites. Polyvinyl ester nanocomposites were synthesized with o-MMT by in-situ polymerization techniqu…
The preparation and properties of Ba–Si–O–N glasses are reported. These oxynitride glasses were prepared by melting mixtures of BaH 2 , SiO 2 , and Si 3 N 4 powders in a nitrogen atmosphere at 1550°–1700°C. The glasses were characterized by X‐ray powder diffraction, differential thermal analysis, and scanning electron…
The nanomechanical response for a nanobeam under thermal effects is investigated by using the nonlocal elasticity field theory, which was first proposed by Eringen in the early 1970s. The nonlocal constitutive relation is adopted to determine the strain energy density which considers the history of nonlinear straining…
The behavior of perovskite-like NaNdTiO4 complex oxide in acid aqueous solutions was studied. By the X-ray and thermogravimetry analyses the instability of NaNdTiO4 in aqueous solutions was found, which is determined by the sodium cation exchange for protons and by water molecules intercalation into the interlayer spa…
Electrical detection of specific proteins was demonstrated using aptamer-modified graphene field-effect transistors (G-FETs). Immunoglobulin E (IgE) aptamers were immobilized onto the graphene surface with 1-pyrenebutanoic acid succinimidyl ester as a linker. From an atomic-force microscopy image, the height of the gr…
Abstract We report electron paramagnetic resonance (EPR) evidence of the antiferromagnetic ordering in pristine single‐layer graphene. Temperature dependences of the parameters of EPR spectra obtained for vacuum‐processed samples were studied within the temperature range of 4.2–300 K. Our experiment has confirmed rece…
We describe the layout and the capabilities of a new aberration-corrected low-energy electron microscopy (LEEM) and photoemission electron microscopy (PEEM) facility, which features real- and reciprocal-space spectroscopy. This new setup, named Electronic, Structural, and Chemical Nanoimaging in Real Time (ESCHER), wa…
Complementary but independent medium-energy and low-energy ion scattering studies of the (0001) surfaces of V(2)O(3) films grown on Pd(111), Au(111) and Cu(3)Au(100) reveal a reconstructed full O(3)-layer termination creating a VO(2) surface trilayer. This structure is fully consistent with previous calculations based…
Dendrimers are polymeric compounds with highly branched structures and functionally tunable peripheral groups. Because of their low polydispersity, high degree of molecular uniformity, and precisely controlled structure, dendrimers are excellent models for demonstrating a variety of biological activities. With the att…
It becomes necessary to change the surface morphology of natural fibers to improve the interfacial adhesion between matrix and fibers. To improve the compatibility between natural fibers and hydrophobic polymer matrices, various greener methods have been explored such as plasma treatment and treatments using fungi, en…
As nanomaterials are harnessed for medicine and other technological advances, an understanding of the toxicology of these new materials is required to inform our use. This toxicological knowledge will be required to establish the medical and environmental regulations required to protect consumers and those involved in…
Micrograin Superplasticity refers to the ability of fine-grained materials (1 µm < d < 10 μm, where d is the grain size) to exhibit extensive neck-free elongations during deformation at elevated temperatures. Over the past three decades, good progress has been made in rationalizing this phenomenon. The present p…
Polyhydroxyalkanoates (PHA) are biodegradable and biocompatible green thermoplastics, synthesized by wide variety of bacteria as an intracellular carbon and energy storage intermediate. They are used as an alternative to nonrenewable petroleum derived plastics. The current interest in these biopolyesters is stimulated…
The Si 2p x ray photoelectron spectra of SiOx with a different composition of 0 ≤ x ≤ 2 have been studied experimentally and theoretically. The SiOx films were prepared by low-pressure chemical vapor deposition from SiH4 and N2O source at 750 °C. Neither random bonding nor random mixture models can adequately describe…
The temporal evolution of a high pressure He arc producing nanotubes was considered and the Langmuir probe technique was applied for plasma parameter measurements. Two modes of arc were observed: cathodic arc where discharge is supported by erosion of cathode material and anodic arc which is supported by ablation of t…
The development of radiation-resistant materials to sustain the harsh fusion environment represents a challenging task for divertor designers. In recent years, advanced physics simulations of the power leaving the plasma with radiation and charged particles indicate much higher heat fluxes to the divertor than previou…