Materials Literature
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We investigated the thermal conductivity of InP nanowires with diameters $d=0.83$, 1.66, 2.49, 3.32, 4.15, and 4.97 nm by means of molecular-dynamics simulations using a potential with two-body and three-body contributions. In the temperature range of 100--700 K, thermal conductivities of approximately $1.0--2.5\text{…
We fabricated all solid electrochromic devices by connecting two kinds of cyanide thin films. We found that the magnitude of t R decreases with increase in the electric pressure | V | as t R ∝| V | -1 and with decrease in the device thickness d D as t R ∝( d D -2 d EDL ) 2 , where d EDL (=50–100 nm) is the effective t…
The cumulant expansion is one of the most powerful and useful methods for EXAFS data analysis, in which the higher-order cumulants allow to consider deviations from a simple Gaussian distribution. In this work, analytical expressions have been derived to show the effects of neglecting higher-order cumulants in EXAFS a…
The initial nucleation and growth processes of CdSe nanocrystals in a microfluidic reactor are studied by in situ extended X-ray absorption fine structure (EXAFS) in conjunction with UV−visible absorbance and photoluminescence spectra. On the basis of a surface reaction kinetics equation, the analytical expressions of…
A Langmuir film of a third-generation carbazole-terminated poly(benzyl ether) (G3-CtPBE) dendrimer was investigated at the air-water interface. Langmuir-Blodgett (LB) films were deposited on gold substrates and investigated by atomic force microscopy (AFM), followed by electrochemical and electronanopatterning studies…
Mixed metal-semiconductor clusters of the form Bi2Si(n-2) and Bi2Ge(n-2), n = 3-8, 12, are studied theoretically by ab initio methods including density functional theory with the hybrid B3LYP functional, second-order perturbation, and coupled cluster CCSD(T) theory using the doubly polarized TZV2P basis sets. These cl…
The coordination geometry adopted by the lanthanide complexes of DOTA-tetraamides is a critical factor in determining their water exchange kinetics. Controlling the water exchange kinetics of DOTA-tetraamide complexes, and by extension their coordination geometry, is of particular interest because of the potential app…
A resonance Raman study of ${\text{C}}_{10}{\text{H}}_{2}$ and ${\text{C}}_{12}{\text{H}}_{2}$ polyynes encapsulated in single-wall carbon nanotubes of different diameters is presented. We show that the energy of the optical transitions associated with excited dark states of the polyyne depends on the diameter of the…
A series of multistate redox-active architectures has been synthesized, structurally characterized, and their optical and redox properties investigated. Specifically, two redox-active ferrocene or cobalt-dithiolene moieties have been introduced to the "bay" region of perylene-bisimides. Three of these disubstituted pe…
Using absorbance, fluorescence, resonance light scattering, and circular dichroism spectroscopy, we studied the self-assembly of the anionic meso-tetra(4-sulfonatophenyl)porphine (TPPS(4)(2-/4-)) and a cationic 22-residue polypeptide. We found that three TPPS(4)(2-/4-) molecules bind to the peptide, which contains nin…
The topotactic reduction of the acentric phase YMnO 3 with CaH 2 in the temperature range 225 °C < T < 350 °C yields phases of composition YMnO 3− x ( x = 0 < x < 0.2). Oxide ions are deintercalated from the equatorial anion sites of the material, which induces increasing levels of structural disorder into the resulti…
In the multilayer structure, La0.7Sr0.3MnO3/depleted manganite layer/MnSi, the photovoltaic effect has been discovered. The depleted manganite layer in the structure is dielectric and serves as a potential barrier between the ferromagnetic conducting La0.7Sr0.3MnO3 and MnSi layers by the formation of a magnetic tunnel…
The solubilities of thiourea in ethanol or methanol + water from (289.75 to 330.85) K and the enthalpies of solution of thiourea in methanol, ethanol, or water had been determined with the suitable experimental methods and apparatus. The experimental data of solubilities were correlated with the modified Apelblat equa…
Simultaneous measurements of the specific heat, latent heat, light scattering, and polarization microscopy were carried out in 8CB liquid crystal confined in Aerosil and Millipore membranes networks, to assess the different properties of the nematic material nucleating over the nematic-isotropic transition under diffe…
We demonstrate a method, employing prepatterns based on hydrogen silsesquioxane (HSQ) resist, for fabricating highly dense dot arrays of perpendicular block copolymer (BCP) cylinders with improved quality or increased density multiplication factors compared to conventional SiO(x)-based chemical prepatterns (dot arrays…
Anisotropic nanoparticles with precisely controlled chemical functionality are attractive building blocks for the assembly of sophisticated new materials and devices. Metal nanoparticles protected by self-assembled organic monolayers (MPCs) have drawn increasing attention due to potential applications in biosensing, c…
Published research is reviewed for purposes of establishing baseline performance expectations for the direct conversion of carbon in a molten carbonate fuel cell. Examination of data from several sources supports the possibility of direct carbon conversion at a total efficiency of 80% (HHV) and peak power of at least…
The fundamental characteristics of a textile fabric intended for the vehicle interior is presented. Chemical and physical-mechanical properties of artificial leather with bonded textile fabric on the back side are analyzed. The most important parameters for leather durability are: breaking force and elongation-at-brea…
We report laser induced self-assembly of silver nanoparticles via plasmonic interactions. By focusing a near-infrared laser in silver nanoparticle suspension, nanoparticle assembly is formed as a result of optical trapping. The shape of Rayleigh scattering spectra of the nanoassembly strongly depends on the polarizati…
The condensation of DNA by poly(amido amine) dendrimers of generation 1, 2, and 4 has been followed by time-resolved cryogenic transmission electron microscopy (cryo-TEM). The recorded images show that significant morphological rearrangement occurs for DNA condensed with the lower generation dendrimers leading to the…