Materials Literature
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PURPOSE: To investigate physical and biophysical properties of proton tracks 1 keV-300 MeV using Monte Carlo track structure methods. MATERIALS AND METHODS: We present model calculations for cross sections and methods for simulations of full-slowing-down proton tracks. Protons and electrons were followed interaction-b…
We report on a direct comparison of the depth and lateral resolution of the current state-of-the-art laser-assisted atom probe microscopy analysis of single-crystalline silicon. The isotopic heterostructures composed of 5–15 nm-thick S28i- and S30i-enriched layers were measured to reconstruct three-dimensional images…
Synthesis of nanoparticles of TiO 2, Pt, CdS, and their binary and ternary combinations were made on zeolite Y starting from molecular precursors that are ion exchanged into the zeolite. Nanoclusters of TiO 2 in the anatase form were formed from titanyl ions at low loadings of Ti (1 per 2.5 supercages). CdS (hexagonal…
The ground state structure and frontier molecular orbital of newly synthesized carbazole-fluorene based D-π-A organic dyes, CFP1A, CFP2A, CFP1CA, and CFP2CA, were theoretically investigated using density functional theory (DFT) at B3LYP/6-31G(d,p) level. These dye molecules have been constructed based on carbazole-flu…
A cold radio frequency oxygen plasma treatment is demonstrated as a successful route to prepare clean, well-ordered, and stoichiometric PrO(2) layers on silicon. High structural quality of these layers is shown by x-ray diffraction. So far unobserved spectral characteristics in Pr 3d x-ray photoelectron (XP) spectra o…
Comparative Molecular Field Analysis (CoMFA) is a mainstream and down-to-earth 3D QSAR technique in the coverage of drug discovery and development. Even though CoMFA is remarkable for high predictive capacity, the intrinsic data-dependent characteristic still makes this methodology certainly be handicapped by noise. I…
In this work, the thermodynamic equilibrium and applying of PEG4000/Phosphate ATPS on the purification of bromelain extracted from pineapple was studied. A rigorous study of the equilibrium curves and tie-line length from PEG4000/phosphate ATPS were done for the pH 6-11 at 25ºC. Results showed that there was augment i…
Abstract Diamond/Cu‐ x Cr composites were fabricated by pressure infiltration process. The thermal conductivities of diamond/Cu‐ x Cr ( x = 0.1, 0.5, 0.8) composites were above 650 W/mK, higher than that of diamond/Cu composites. The tensile strengths ranged from 186 to 225 MPa, and the bonding strengths ranged from 4…
A coarse-grained molecular model, which consists of a spherical particle and an orientation vector, is proposed to simulate lipid membrane on a large length scale. The solvent is implicitly represented by an effective attractive interaction between particles. A bilayer structure is formed by orientation-dependent (til…
Folding of naturally occurring proteins has eluded a universal molecular level explanation till date. Rather, there is an abundance of diverse views on dominant factors governing protein folding. Through rigorous analyses of several thousand crystal structures, we observe that backbones of folded proteins display some…
This Perspective highlights studies of protein structure, stability, and folding kinetics that can now be carried out in prokaryotic and eukaryotic cells. The general features of cooperative folding transitions and kinetics remain the same as those in vitro, but the folding free-energy landscape and local viscosity va…
Power Quality means to maintain purely sinusoidal current wave form in phase with a purely sinusoidal voltage wave form. Power quality improvement using traditional compensation methods include many disadvantages like electromagnetic interference, possible resonance, fixed compensation, bulkiness etc. So power system…
Information relating to the biology, culture expansion, and mechanisms relating to adipose-derived cells has advanced significantly in the past decade. Both the heterogeneous stromal vascular fraction (SVF) and more homogeneous adipose-derived stem cells (ASC) offer unique opportunities as novel cell-based therapeutic…
The enthalpy of formation of 5,6-(3,4-furazano)-1,2,3,4-tetrazine-1,3-dioxide was determined, and the parameters of detonation, energetics, and performance characteristic were estimated.
We present full-band structure calculations of temperature- and wavelength-dependent two-photon absorption coefficients and free-carrier absorption cross sections in GaAs, InP, and 0.92 eV-band gap Ga64In36As and InP60As40 alloys. The calculated coefficient decreases with increasing wavelength and band gap but increas…
In the nanoscale beam, the effect of the coupling between temperature and strain rate becomes domineering. In the present study, a generalized solution for the vibration of gold nano-beam resonator induced by ramp type heating is developed in the context of the Green and Naghdi model of generalized thermoelasticity. T…
Single crystalline anatase TiO 2 tetragonal nanosheet‐array film on a transparent conductive fluorine‐doped tin oxide (FTO) substrate was successfully prepared by hydrothermal method. The products were characterized with XRD, SEM, and transmission electron microscopy measurements. The formation mechanism of the tetrag…
Drastic efforts have been realized these last years in order to develop comple mentary organic technology. This is the essential key to produce elementary low cost circuits for digital and analog applications. Different techniques are available nowadays to obtain both Nand/or P-type organic devices. Screen printing is…
The HELIOS zero-dimensional code (Version 1.0) is described in detail in the case of deuterium-tritium (D-T) plasmas.The part of the code described solves in a self-consistent way the thermal equilibrium equation of a D-T thermonuclear plasma coupled to the conservation equation of the helium ash with a τHe*/τE = cons…
One of the challenges in the field of organic photovoltaics is developing alternatives to the family of fullerene derivatives that are commonly used as acceptor material but that generally lack strong optical absorption coefficient. We describe the synthesis and optoelectronic properties of three new acceptor electron…