NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
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.
In this article we review the nature and mechanics of damage induced in ceramics by spherical indenters, from the classical studies of Hertz over a century ago
J.- M. Flaud, M Birk, G Wagner, J Orphal, S Klee, Walter J. Lafferty
The far infrared spectrum of HOC1 has been recorded at high resolution between 20 and 360 cm-1 by means of Fourier transform spectroscopy, and it was possible
Microdevices produced by machining silicon can offer a variety of control functionality on a miniature scale, 1.2 with general advantages connected to not only
Angela R. Hight Walker, David F. Plusquellic, Gerald T. Fraser, A Weber, Walter J. Lafferty
Three infrared diagnostic techniques are developed to characterize chemical contamination in wind tunnels and shock tubes which can affect the reliability of
We present a computationally efficient scheme to calculate the optical absorption of insulators from first principles, including the electron-hole interaction
C. S. Phinney, Karen E. Murphy, Michael J. Welch, P M. Ellerbe, Stephen E. Long, Kenneth W. Pratt, Lorna T. Sniegoski, M. S. Rearick, Thomas W. Vetter, Robert D. Vocke Jr.
The specific architecture of an A/D converter influences the code probability distributions that result from random input noise. In particular, the ouput codes
Donna C. Hurley, Davor Balzar, P T. Purtscher, K W. Hollman
We have determined the nonlinear ultrasonic parameter Β and the ultrasonic longitudinal phase velocity {upsilion}L for a series of martensitic steel specimens
The temperature dependence of the terahertz (THz) output power and spectra from biased photoconductive switches was measured for several antenna gap widths and
When a Ne:PF 5 or a Ne:PF 3 is codeposited a 5 K with a beam of neon atoms that have been excited in a microwave discharge, the infrared spectrum of the
J. P. Deyst, Nicholas Paulter, T. Daboczi, Gerard N. Stenbakken, T. M. Souders
A system is described for calibrating high-bandwidth oscilloscopes using pulse signals. The fast pulse oscilloscope calibration system (FPOCS) is to be used to
J O. Cross, W Elam, V G. Harris, J P. Kirkland, Charles E. Bouldin, L B. Sorensen
Diffraction anomalous fine-structure (DAFS) experiments measure Bragg peak intensities as continuous functions of photon energy near a core-level excitation
J Eng, Krishnan Raghavachari, L M. Struck, Y J. Chabal, B E. Bent, M M. Banaszak-Holl, F R. McFeely, A M. Michaels, G W. Flynn, S B. Christman, E E. Chaban, G P. Williams, K Radermacher, S Mantl
Motivated by an ongoing controversy regarding the proper interpretation of x-ray photoelectron spectra of Si/SiO 2 interfaces derived from the adsorption of H
P E. Thompson, C Silvestre, M E. Twigg, G Jernigan, David S. Simons
Previously atomic hydrogen has been shown to be effective in reducing the segregation of Ge on Si[100] during solid source molecular beam epitaxygrowth. In this
D Tulchinsky, Michael H. Kelley, Jabez J. McClelland, R Gupta, Robert Celotta
Arrays of magnetic nanowires are fabricated by using a corrugated surface, produced by chromium atoms laser-focused in a one-dimensional standing wave, as a
Monte Carlo simulations of the growth of Co/Cu(100) in the presence of steps, terraces, and kinks were performed. The beginning stages of Co growth enhance the
H Jianmei, D T. Raghavan, D Hoffman, Donald L. Hunston
The influence of toughener concentration on the fracture behavior of two-phase, rubber toughened epoxy is studied. To vary the concentration without altering
Femtosecond pump-probe near-field photoconductivity is used to investigate the time response of surface impurities on a GaAsP diffusion type photodiode. At the
Michael W. Cresswell, Richard A. Allen, William F. Guthrie, Rathindra Ghoshtagore, Loren W. Linholm, J. J. Sniegowski
The physical widths of reference features incorporated into electrical linewidth test structures patterned in films of mono-crystalline silicon have been