Materials Literature
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The identification of relevant collective coordinates is crucial for the interpretation of coherent nonlinear spectroscopies of complex molecules and liquids. Using an $\hbar$ expansion of Liouville space generating functions, we show how to factorize multitime nonlinear response functions into products of lower-order…
We have studied how two- and three-dimensional systems made up of particles interacting with finite range, repulsive potentials jam (i.e., develop a yield stress in a disordered state) at zero temperature and zero applied stress. At low packing fractions phi, the system is not jammed and each particle can move without…
D.J. Stokes; Low Vacuum Scanning Electron Microscopy: A Review of Progress & Applications, Microscopy and Microanalysis, Volume 9, Issue S02, 1 August 2003,
In this paper, we present the fabrication and experimental results of impedance-graded composites containing carbon nanotubes, carbon fibers, microballoons along with Frequency Selective Surface (FSS). Samples with different FSS patterns were used along with these composites and experiments were carried out to find th…
Kenneth Williams, Robert Bennett, Alan Brooker, Richard Bormett, Tim Prusnick; New Methods in Raman Spectroscopy – Combining Other Microscopes, Microscopy
We investigate an annealed hard sphere fluid in contact with a rigid, random fiber network modeled by quenched, vanishingly thin hard needles. For this model a quenched-annealed density functional theory is presented that treats arbitrary spatially inhomogeneous situations, in particular anisotropic and spatially vary…
M Colella, Z Zhang, KS Finnie, Y Zhang, KL Smith, EJ Buck; Determination of U-oxidation states in the brannerite structure by electron energy-loss (EELS),
Fine-crystalline diamond particles are grown on standard Si atomic force microscopy tips, using hot filament-assisted chemical vapor deposition. To optimize the conditions for diamond deposition, first a series of experiments is carried out using silicon substrates covered by point-topped pyramids as obtained by wet c…
Kazuo Ishizuka, Koji Kimoto, Yoshio Bando; Improving Energy Resolution of EELS Spectra by Deconvolution using Maximum-Entropy and Richardson-Lucy Algorithm
Abstract Compounds 1,1‐di‐( N ‐pyrrolyl)methane hydroxamic acid ( II ), 1,1‐di‐( N ‐indolyl)methane hydroxamic acid ( IV ), 1,1‐di‐( N ‐carbazolyl)methane hydroxamic acid ( VI ), 1‐( N ‐pyrrolyl)‐1‐( N ‐carbazolyl)methane hydroxamic acid ( VIII ), and 1‐( N ‐pyrrolyl)‐1‐( N ‐indolyl)‐methane hydroxamic acid ( X ) were…
Magnetocaloric effect and specific heat of a La0.845Sr0.155MnO3 sample were measured over a temperature range of 4.2–300 K, to verify whether large entropy changes induced by magnetic field make possible the use of manganites for magnetic refrigeration and whether a magnetostrictive contribution to magnetocaloric effe…
A detailed analysis of nanotube (NT) nucleation from graphitic nanofragments by thermal vibration is given, outlining the role of activation energy barriers which may be significantly decreased by the interaction with amorphous carbon, fullerene-like, and carbonized metal catalyst nanoparticles. This analysis predicts…
Molecular dynamics simulations have been carried out to study the structure of a model liquid crystalline dendrimer (LCDr) in solution. A simplified model is used for a third generation carbosilane LCDr in which united atom Lennard-Jones sites are used to represent all heavy atoms in the dendrimer with the exception o…
Electron paramagnetic resonance measurements were carried out to probe the structure of Mn2+ in ZnO nanocrystals with different surface conditions, modified by an annealing process. Changes in the spectra by the annealing treatment indicate the existence of three Mn2+ centers. The first is a sextet signal SI with g=2.…
The structure of praseodymium germanium sulfide, Pr4Ge3S12, has been determined in the course of the determination of the amount of contamination of the title compound by the starting products. Its structure was assumed to be isostructural with the structure of La4Ge3S12. One Pr atom lies on a threefold axis.
Single crystals of K1−xTi1−xNbxOPO4 and K1−xTi1−xSbxOPO4 solid solutions are grown and their dielectric properties, electrical conductivity, and nonlinear optical properties are studied. Maximal content of these dopants x is found to be 0.11 for Nb and 0.23 for Sb. This doping leads to the creation of the additional p…
To clarify the factors that determine the structural relaxations in silica glass, the influence of fictive temperature on the relaxation process was investigated. It was found that the relaxations at different heat-treatment temperatures are enhanced with a rise in the fictive temperature. The structural relaxation is…
Journal Article Is SEM Noise Gaussian? Get access M Satya Prasad, M Satya Prasad EM Facility, University of Tennessee, Knoxville, TN 37996-0810 Search for other works by this author on: Oxford Academic Google Scholar David C Joy David C Joy Oak Ridge National Laboratory, Oak Ridge, TN 37831-6064 Search for other works…
Die Einführung organischer Substituenten ist eine wichtige Voraussetzung für den biologischen Einsatz von Polyoxometallaten. Modelle hierfür sind die Organozinnderivate α1- und α2-[P2W17O61{Sn(CH2)2CO2H}]7− (siehe Bild), die mit Alkoholen, Aminen sowie C-geschützten Aminosäuren gekuppelt werden können.
Er 3+ – Yb 3+ codoped TiO2 films were prepared on fused silica by sol–gel processes. The Yb3+ codoping effect on the physical characteristics and ∼1.54 μm photoluminescence (PL) properties of Er3+-doped TiO2 films was investigated. Maximum ∼1.54 μm PL intensity occurs in Er3+ (5 mol %)–Yb3+(30 mol %) codoped TiO2 samp…