Materials Literature
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First-principles density functional theory coupled with deformation potential calculations indicate a strong width-dependent carrier mobility: for an armchair graphene ribbon whose width (i.e., number of carbons along the edge) is N = 3k, the room-temperature electron mobility is calculated to be approximately 10(6) c…
We show that strong photoluminescence (PL) can be induced in single-layer graphene using an oxygen plasma treatment. The PL is spatially uniform across the flakes and connected to elastic scattering spectra distinctly different from those of gapless pristine graphene. Oxygen plasma can be used to selectively convert t…
The effects of five nanomaterials (multiwalled carbon nanotubes [MWCNTs], Ag, Cu, ZnO, Si) and their corresponding bulk counterparts on seed germination, root elongation, and biomass of Cucurbita pepo (zucchini) were investigated. The plants were grown in hydroponic solutions amended with nanoparticles or bulk materia…
Abstract Blends of poly‐ε‐caprolactam (nylon6) and poly{2,6‐diimidazo[4,5‐b:4′5′‐e]pyridinylene‐1,4(2,5‐dihydroxy) phenylene} (PIPD/nylon 6) have been prepared via a controlled polymer solution crystallization method. The crystallization behavior of nylon 6 in the blends was investigated using differential scanning ca…
In this work, the possibility of applying the weighted sum of three cumulative Weibull distribution functions for the fitting of the kinetic conversion data of biomass oxidative pyrolysis has been investigated. The kinetic conversion data of the thermal decomposition of olive oil solid waste in oxygen atmosphere for d…
The anodic behavior of St3 steel in a neutral borate buffer solution containing various concentrations of 5-phenyl (PTA) and aggressive sodium chloride additives and the adsorption PTA on the surface of pure iron are studied. Ellipsometry is used to show that the adsorption of PTA begins at concentrations of less than…
Abstract In situ microfibrillar‐reinforced composites (MFC) based on blends from poly(ethyleneterephthalate) (PET) and low‐density polyethylene (LDPE) were prepared under industrial relevant conditions by melt extrusion, followed by continuous cold drawing in weight ratios of PET/LDPE equal to 50/50. Test specimens we…
An efficient and practical protocol in atmospheric and room-temperature conditions for the direct surface modification of PDMS is achieved using X-ray irradiation. This enables not only to “ablate” hydrophobic molecules from PDMS, rendering the surface hydrophilic, but also to “deposit” them on flat and nanostructure…
Abstract The alkali metal halide doping of gallium‐sulfide glasses yields improvements in the optical, thermal and glass forming properties. To understand these improvements, the short‐range order of x CsCl(1 − x )Ga 2 S 3 glasses was probed by Raman spectroscopy. Raman spectra have been interpreted using density func…
Meso-macro-porous monolithic Pt-Ni/Al(2)O(3) catalysts with platinum and nickel in interaction and in a highly dispersed state have been successfully prepared, and the obtained catalysts are highly efficient for CO removal from hydrogen rich gases via preferential oxidation; the results show that preparing catalysts t…
Magnesium/silicon carbide (Mg/SiC) multilayers have been fabricated with normal incidence reflectivity in the vicinity of 40% to 50% for wavelengths in the 25 to 50 nm wavelength range. However many applications, for example solar telescopes and ultrafast studies using high harmonic generation sources, desire larger b…
Performing molecular dynamics simulations for an all-atom model, we investigate the rotational and conformational dynamics of short poly(ethylene oxide) chains sandwiched between two parallel TiO 2 surfaces. In this nanocomposite, the polymer forms layers parallel to the solid interfaces. At the studied temperatures,…
Aligned ZnO nanorod arrays are grown on Zn foil using a simple and low cost solution chemistry approach. We have studied the effects of various growth parameters, including the temperature, solution composition and the concentration of individual components on the morphology, structural quality, and properties of the…
We present a thermal transport phenomenon, a unidirectional selection-rule blockade, and show how it produces unprecedented rectification of bosonic heat flow through molecular or mesoscopic quantum systems. Rectification arises from the quantization of energy levels of the conduction element and selection rules of re…
Novel multilayer thin films that consist solely of cross-linked single component layers are generated by a selective cross-linking of the poly(vinyl amine) (PVAm) layers in [PVAm/poly(acrylic acid) (PAA)](n) thin films constructed either on silica particles or silicon wafers, followed by the removal of PAA. The surfac…
Indium tin oxide (ITO) and Ag (1.2±0.1at.%)-ITO films with the thickness of 130nm were deposited on glass substrates at room temperature by dc magnetron sputtering and postannealed at the temperature range of 200–400°C. By calculating the x-ray diffraction data, the lattice constants of all samples were obtained and t…
Abstract The effects of different fillers on physical, mechanical, and optical properties of styrenic‐based thermoplastic elastomers were investigated by experimental study. Poly[styrene‐b‐(ethylene‐ co ‐butylene)‐b‐styrene] block copolymer (SEBS)‐based thermoplastic elastomer composites were prepared in a co‐rotating…
A theoretical and numerically study of dynamical properties in the sol-gel transition is presented. In particular, the complex phenomenology observed experimentally and numerically in gelling systems is reproduced in the framework of percolation theory, under simple assumptions on the relaxation of single clusters. By…
Abstract A novel method was attempted to reinforce a vinyl‐terminated polydimethylsiloxane (PDMS) with two commercially available clays, sodium montmorillonite and Cloisite ® 25A. The two clays were functionalized with bis(3‐triethoxysilylpropyl)tetrasulfide (TESPT) to prepare Na + MMTS 4 and C25AS 4 , respectively. I…
Injection of a mixture of HAuCl(4) and cellulose dissolved in the ionic liquid (IL) 1-butyl-3-methylimidazolium chloride [Bmim]Cl into aqueous NaBH4 leads to colloidal gold nanoparticle/cellulose hybrid precipitates. This process is a model example for a very simple and generic approach towards (noble) metal/cellulose…