Materials Literature
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It is generally believed that superconductivity and magnetism are two antagonistic long-range phenomena. However, as it was preliminarily highlighted in D. Stamopoulos et al. [Phys. Rev. B 75, 014501 (2007)] and extensively studied in this work under specific circumstances these phenomena instead of being detrimental…
We report on the sensing mechanism of electrical detection of deoxyribonucleic acid (DNA) hybridization for Au- and Cr-contacted field effect transistors based on single-walled carbon nanotube (SWCNT) networks. Barrier height extraction via low-temperature electrical measurement provides direct evidence for the notion…
Abstract Fluorescent CdTe quantum dots (QDs) can be dispersed into poly(vinyl alcohol) (PVA) solid nanofibers by electrospinning of a QD–PVA blend solution. Although solution blending methods usually cause phase separation as the solvent evaporates; here, attractively, the QDs do not aggregate, on the contrary, they a…
We present and discuss the results of calculations of surface relaxations and rumplings for the (001) and (011) surfaces of $\mathrm{Ba}\mathrm{Ti}{\mathrm{O}}_{3}$ and $\mathrm{Pb}\mathrm{Ti}{\mathrm{O}}_{3}$ using a hybrid B3PW description of exchange and correlation. On the (001) surfaces, we consider both $A\mathr…
Experiments show that bubbles covered with monodisperse polystyrene particles, with particle to bubble radius ratios of about 0.1, evolve to form faceted polyhedral shapes that are stable to dissolution in air-saturated water. We perform Surface Evolver simulations and find that the faceted particle-covered bubble rep…
Recently, it was demonstrated that the quasiparticle dynamics, the layer-dependent charge and potential, and the c -axis screening coefficient could be extracted from measurements of the spectral function of few layer graphene films grown epitaxially on SiC using angle-resolved photoemission spectroscopy (ARPES). In t…
A simple strategy to tailor the surface of nanoparticles for their specific adsorption to and localization at block copolymer interfaces was explored. Gold nanoparticles coated by a mixture of low molecular weight thiol end-functional polystyrene (PS-SH) (Mn = 1.5 and 3.4 kg/mol) and poly(2-vinylpyridine) homopolymers…
A novel structure of catalyst, submonolayer Pt-decorated Au, has been synthesized with minimal use of Pt and shows markedly improved activity toward formic acid oxidation where it facilitates the direct oxidation of formic acid by suppressing the formation of poisonous species COads via the "ensemble" effect.
Tailoring the structure of nanocrystal superlattices is an important step toward controlled design of novel nanostructured materials and devices. We demonstrate how the long-range order and macroscopic dimensions of magnetic nanoparticle arrays can be controlled by the use of a modulated magnetic field. Inducing a dip…
The wetting character of surfactant based polymer brushes is examined. The unique ability for the brush surfaces to be both hydrophilic and oleophobic rendered self-cleaning materials.
Abstract This Review article ponders core/shell structured nanoparticles that can be prepared with features that combine properties of different materials, including ligands that enhance their biocompatibility. These nanocomposites are not classified in terms of synthesis, but rather by how these features are distribu…
We have constructed a fully functional, fully integrated radio receiver from a single carbon nanotube. The nanotube serves simultaneously as all essential components of a radio: antenna, tunable band-pass filter, amplifier, and demodulator. A direct current voltage source, as supplied by a battery, powers the radio. U…
Carbon nanotube (CNT) fibers that are many times stronger and stiffer per weight than the best existing engineering fibers and over twenty times better than other reported CNT fibers are described (see figure). Additionally, these CNT fibers are nonbrittle and tough, making them far superior to existing materials for…
We analyze the features of the graphene mono- and multilayer reflectance in the far-infrared region as a function of frequency, temperature, and carrier density taking the intraband conductance and the interband electron absorption into account. The dispersion of plasmon mode of the multilayers is calculated using Max…
Abstract Films of polymer metal oxide composites with poly(methyl methacrylate) and metallic powders (CuO, Ni, and brushed Fe 3 O 4 ) were prepared with a spin‐casting method. Electric transport studies indicated that the compositions surpassed the percolation threshold limit. Alternating current (AC) conductivity stu…
Amorphous Se70Te30–xCdx (x = 0, 10) are obtained by thermal evaporation under vacuum of bulk materials on pyrographite and glass substrates. The I – V characteristic curves for the two film compositions are typical for a memory switch. They exhibited a transition from an ohmic region in the lower field followed by non…
Experimental solubilities are reported for anthracene in six binary propyl acetate + alcohol solvent mixtures at 298.15 K. The alcohol solvents studied were 1-propanol, 1-butanol, 2-propanol, 2-butanol, 2-methyl-1-propanol, and 3-methyl-1-butanol. Results of these measurements were used to test a mathematical represen…
The low-temperature behavior of a diluted magnetic semiconductor (DMS) is studied theoretically in terms of low-energy effective spin excitations (spin waves), including randomness of the dopant distribution. Two branches of spin waves are found, and their dispersions are analytically expressed versus hole and dopant…
Abstract The aim of this work is the study of the foaming process of a commercial polyethylene in the presence of a crosslinking agent. Foams have been produced under nearly atmospheric pressure conditions, which commonly occur during polymer rotomolding. Different processingtemperatures and different combinations of…
This chapter contains sections titled: Introduction Polymer Blends Coarse-Grained Polymer Models A Coarse-Grained Model for Binary Polymer Blends Self-Consistent Field (SCF) Theory and Fluctuation Effects Identifying the Effective Flory–Huggins Parameter, ˜χ Single-Chain Conformations in the Bulk Interfaces Liquid–Vap…