An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Claude Weil, Chriss A. Jones, Y. Kantor, John H. Grosvenor Jr
We examine the sccuracy of the air-filled stripline cavity in measuring the dielectric and magnetic properties of bulk materials in the frequency range of 150
In a previous paper, we have presented a method for evaluating the performance of anechoic chambers by analyzing the S-parameters of a system comprising two
Using Brillouin scattering, we have determined the five independent elastic constants of Β-Si 3N 4 single crystals. They are (in units of GPa) c 11 = 433(3), C
A R. Moodenbaugh, B Nielson, S Sambasivan, Daniel A. Fischer, T Friessnegg, S Aggarwal, R Ramesh, B Pfeffer
The oxygen K near edge x-ray absorption fine structure (NEXAFS) of polycrystalline and film La1-xSrxCoO3-d at room temperature was studied using fluorescence
Julia Y. Chan, Igor Levin, Terrell A. Vanderah, Richard G. Geyer, Robert S. Roth
Subsolidus phase equilibria in the SrO-Al 2O 3-Nb 2O 5 system were determined by synthesis of 75 compositions in air in the temperaturerange 1200-1600 C. Phase
Jan Genzer, E Sivaniah, E K. Kramer, J G. Wang, H Koerner, K Char, Christopher K. Ober, B M. DeKoven, Robert A. Bubeck, Daniel A. Fischer, S Sambasivan
Near-edge X-ray absorption fine structure is used to investigate the temperature dependence of molecular orientation of semi-fluorinated liquid crystalline (SF
Wen-Li Wu, William E. Wallace, Eric K. Lin, G W. Lynn, Charles J. Glinka, E T. Ryan, H M. Ho
A new methodology based on a novel combination of a high-resolution specular x-ray reflectivity and small-angle neutron scattering has been developed to
P Bloss, A S. DeReggi, G M. Yang, G M. Sessler, H Schafer
We report complementary studies of space charge distributions in electron-beam irradiated fluoroethylene propylene (FEP) thicknesses of 13 and 26 m) using the
Electronic, steric and thermodynamic factors governing the reaction of O[ 3P) with alkyl iodides to yield HOI are probed by time-resolved Fourier transform
In recent least-squares fits of torsion-rotation spectra of acetaldehyde and methanol it was found possible to adjust more fourth-order parameters than would be
The spectral cross-corrrelation method [Jacobson et al., J Chem. Phys. 107, 8349 (1997)], developed for the identification and extraction of spectroscopic
M Kuno, D P. Fromm, H F. Hamann, Alan Gallagher, David Nesbitt
We have studied the fluorescence intermittency of single CdSe quantum dots (17-29 radius) overcoated with ZnS. Optical measurements were made using a confocal
A J. Glemza, K L. Mardis, A A. Chaudhry, M K. Gilson, G F. Payne
This study examines the molecular basis for para/ortho selectivity in the adsorption of two phenol derivatives from a nonpolar solvent onto an acrylic ester
Electrokinetic analysis is a family of techniques for estimating the charge on solid surfaces, macroscopic particles, colloidal species, and macromolecular
This invited article reviews the nature of the pluralistic standards system in the United States and its important relationships to product development, global
The source of the data is the collection of thermal conductivity data produced by NIST from 1933 to 1983 using their 200 mm guarded-hot-plate apparatus. During
Ubiquitous computing (a.k.a. pervasive computing) is ill-defined due to its novelty and the community's current emphasis on its technological aspects. This can
Valerian I. Nikitenko, V S. Gornakov, Alexander J. Shapiro, Robert D. Shull, K Liu, S M. Zhou, C L. Chien
Real-time magneto-optical indicator film images reveal distinct asymmetry in the motion of a single domain wall in a wedged-NiFe/uniform-FeMn bilayer due to the
We describe the use of scanning confocal fluorescence microscopy to probe the structure and temporal dynamics of unsupported planar lipid bilayer membranes. At
We have computed the frequencies of selected normal modes in perovskite PbZrO 3 (PZ) as a function of lattice parameter using local density functional theory
We present a columnar cluster with 46 atoms per repeat distance which forces a quasicrystal when space is filled by interpenetrating copies of itself. The
M Widom, I Al-Lehyani, Yijun Wang, Eric J. Cockayne
We perform ab-initio total energy calculations for approximants to a model of decagonal A1CoCu. These calculations support previously proposed chemical ordering
A M. Gabelnick, A T. Capitano, D J. Burnett, Daniel A. Fischer, J L. Gland
The catalytic oxidation of propylene with both propylene and oxygen in the gas phase has been characterized on the Pt(111) surface. In situ soft x-ray kinetic