Materials Literature
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A simple approximation within the framework of the hybrid methods for the calculation of the electronic structure of solids is presented. By considering only the diagonal elements of the perturbation operator (Hartree-Fock exchange minus semilocal exchange) calculated in the basis of the semilocal orbitals, the comput…
BACKGROUND: Films made from different protein (P) or polysaccharide (PS) materials have widely different properties. The objective of this study was to determine whether whey protein isolate (WPI)-PS blended films possess a combination of properties intermediate and possibly superior to WPI or PS film alone. RESULTS:…
This study explored the potential of soluble dietary fiber (SDF) from agrowastes, okara (soybean solid waste), oil palm trunk (OPT), and oil palm frond (OPF) obtained via alkali treatment, in the nanoencapsulation of Lactobacillus acidophilus . SDF solutions were amended with 8% poly(vinyl alcohol) to produce nanofibe…
In contrast to the Pb-based magnetoelectric laminates (MELs), we find in the BaTiO 3 and NiFe 2 O 4 laminates (number of layers n =5–25) that the longitudinal magnetoelectric (ME) voltage coefficient α E33 becomes much larger than the transverse one due to preferential alignment of magnetic moments along the NiFe 2 O…
Various experimental results providing information on thermodynamic density of states in (Ga,Mn)As are analyzed theoretically assuming that holes occupy GaAs-like valence bands. Allowing for Gaussian fluctuations of magnetization, the employed model correctly describes a critical behavior of magnetic specific heat fou…
We numerically investigate, using the time evolving block decimation algorithm, the quantum transport of ultra-cold bosonic atoms in a double well optical lattice through slow and periodic modulation of the lattice parameters (intra- and inter-well tunneling, chemical potential, etc.). The transport of atoms does not…
Colossal negative magnetoresistance and the associated field-induced insulator-to-metal transition, the most characteristic features of magnetic semiconductors, are observed in n-type rare earth oxides and chalcogenides, p-type manganites, n-type and p-type diluted magnetic semiconductors (DMS) as well as in quantum w…
Superconductors are classified by their pairing mechanism and the coupling strength, measured as the ratio of the energy gap, $2\ensuremath{\Delta}$, to the critical temperature, ${T}_{\mathrm{c}}$. We present an extensive comparison of the $2\ensuremath{\Delta}/{k}_{\mathrm{B}}{T}_{\mathrm{c}}$ ratios among many sing…
We report ultrafast response of femtosecond photoexcited carriers in single layer reduced graphene oxide flakes suspended in water as well as few layer thick film deposited on indium tin oxide coated glass plate using pump-probe differential transmission spectroscopy at 790 nm. The carrier relaxation dynamics has thre…
Energy up-conversion is the process by which two absorbed photons are converted in one photon of higher energy. Such a process can be conveniently performed by low-power excitation through sensitized triplet-triplet annihilation and it is now an emerging technique with possible applications in different fields, includ…
Strongly enhanced thermoelectric properties are predicted for graphene nanoribbons (GNRs) with optimized pattern. By means of nonequilibrium Green's function atomistic simulation of electron and phonon transport, we analyze the thermal and electrical properties of perfect GNRs as a function of their width and their ed…
Carbon-based nanomaterials such as carbon nanotubes and graphene are excellent candidates for superhydrophobic surfaces because of their intrinsically high surface area and nonpolar carbon structure. This paper demonstrates that graphene aerogels with a silane surface modification can provide superhydrophobicity. Grap…
New calculations for vanadium dioxide, one of the most controversially discussed materials for decades, reveal that band theory as based on density functional theory is well capable of correctly describing the electronic and magnetic properties of the metallic as well as both the insulating M(1) and M(2) phases. Consi…
Nine in a line: A multifaceted approach, including a silylethylene functionalization strategy, to the synthesis of stable nonacene derivatives (see picture, F green, Si blue) allows an unprecedented level of characterization, including electrochemical, photophysical, and crystallographic studies. The nonacenes show a…
We present a theory for the lattice thermal conductivity ${\ensuremath{\kappa}}_{L}$ of multilayer graphene (MLG) and graphite, which is based on an exact numerical solution of the Boltzmann equation for phonons. Dominant contributions to ${\ensuremath{\kappa}}_{L}$ from out-of-plane or flexural phonons are found, whi…
During the last decade, biodegradable metallic stents have been developed and investigated as alternatives for the currently-used permanent cardiovascular stents. Degradable metallic materials could potentially replace corrosion-resistant metals currently used for stent application as it has been shown that the role o…
The magnetic electron objective lens is of a great importance which limit the resolving power of the electron microscope. The present work investigates the objective focal properties of a single polepiece magnetic electron lens of truncated cone polepiece shape of the selected geometrical dimensions for practical appl…
Based on the electrostatic interaction between carboxymethylated chitosan (CMCH) and negatively charged CdTe quantum dots, and the selective crosslinking of CMCH using glutaraldehyde(GA), we demonstrated the formation of Fe3O4/SiO2/CMCH/CdTe microspheres. The dense silicate shells of Fe3O4 nano-particles (NPs) protect…
Hoki (Macruronus novaezelandiae) and ling (Genypterus blacodes) are cold-water fish caught in New Zealand waters. Their skins are a major component of the post-processing waste stream. Valuable products could be developed from the skins, as they are primarily composed of collagen, which has many commercial application…
We propose a three-component reaction-diffusion system yielding an asymptotic logarithmic time dependence for a moving interface. This is naturally related to a Stefan problem for which both one-sided Dirichlet-type and von Neumann-type boundary conditions are considered. We integrate the dependence of the interface m…