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H Y. Lee, Eric K. Lin, Haonan Wang, Wen-Li Wu, W Chen, T A. Deis
A novel methodology using a combination of ion scattering, x-ray reflectivity (SXR), and small angle neutron scattering was used to characterize the structure
velopment of a calibration facility for spectroradiometric, colorimetric, and goniometric measurements of displays, display colorimeters, and spectroradiometers
Thomas Udem, J Reichert, R Holzwarth, Scott Diddams, D J. Jones, Jun Ye, S T. Cundiff, T W. Hansch, John L. Hall
A suitable femtosecond (fs) laser system can provide a broad band comb of stable optical frequencies and thus can serve as an rf/opticalcoherent link. In this
X-ray methods can provide measurements that, for certain parameters of great technological importance, are the most accurate and sensitive available. Their
State-selective coherent phase control using single shaped femtosecond laser pulses is implemented to achieve forward and backward shifts in time (up to a
P P. Chow, J J. Klaassen, Robert E. Vest, J M. VanHove, A Wowchak, C Polley
High performance ultraviolet (UV) detectors have been fabricated using plasma-enhanced molecular beam epitaxy (MBE). The realized AlGaN Schottky detectors
E Charron, Eite Tiesinga, F H. Mies, Carl J. Williams
We Study an implementation of a two-qubit universal quantum gate with neutral 87Rb atoms trapped in a far-detuned two-color optical lattice. The qubit states
Evaluating groupware usability can be a difficult problem. Many researchers believe that groupware can only be evaluated by studying real collaborators in their
Gene C. Hilton, Steven Deiker, Kent D. Irwin, Sae Woo Nam, John M. Martinis, David A. Wollman
High performance detectors utilizing transition-edge sensors (TES) have been demonstrated for photon energies ranging from the infrared to the x-ray. In the
Wavelength calibration of equipment in the 1500 nm region is essential to ensure channel stability and characterize optical components for wavelength division
Trioxane, a weakly bound polymer of formaldehyde (C3H6O3, melting point 61 deg C, boiling point 115 deg C), is a uniquely suited compound for studying material
Fumiaki Takahashi, Gregory T. Linteris, Vishwanath R. Katta
A fire, whether in a spacecraft or in occupied spaces on extraterrestrial bases, can lead to mission termination or loss of life. While the fire-safety record
A Josephson junction is a perfect frequency to voltage converter, that is, V=f/K j where K j = 483597.9 GHz/V. This unique property has been used to convert a
John S. Suehle, Eric M. Vogel, Monica D. Edelstein, Curt A. Richter, Nhan Van Nguyen, Igor Levin, Debra Kaiser, Hanchang F. Wu, J B. Bernstein
As the feature sizes of complementary metal-oxide-semiconductor (CMOS) devices are scaled downward, the gate dielectric thickness must also decrease to maintain
T M. Regan, D C. Harris, R M. Stroud, J R. White, D W. Blodgett, K C. Baldwin, J A. Miragliotta, M E. Thomas, M J. Linevsky, J W. Giles, T A. Kennedy, M Fatemi, David R. Black
Neutron irradiation of sapphire with 1 1022(=1 MeV)/m2 increases the c-axis compressive strength by a factor of 3 at 600 C. The mechanism of strength
An oscillation-based built in self-test (BIST) method is presented for functional testing of mixed signal devices. An integral component of this method of on
Mark W. Davis, Arthur H. Fanney, Brian P. Dougherty
A barrier to the widespread application of building integrated photovoltaics (BIPV) is the lack of validated predictive performance tools. Architects and
The impact-echo method is a technique for flaw detection in concrete. It is based on monitoring the surface motion resulting from a short-duration mechanical
The maturity method is a technique to account for the combined effects of time and temperature on the strength development of concrete. The method provides a
The Congressional emergency appropriation resulting from the January 17, 1994, Northridge earthquake provided the Building and Fire Research Laboratory (BFRL)
John L. Gross, M D. Engelhardt, Chia-Ming Uang, K Kasai, N Iwankiw
The Congressional emergency appropriation resulting from the January 17, 1994, Northridge earthquake provided the Building and Fire Research Laboratory (BFRL)
The presence of non-ideal flow profiles is known to cause significant metering inaccuracies in conventional pipelines. The characteristics of secondary flows
We review a century of metrology research and development in the U.S. that paralleled the birth of radio/wireless and other electromagnetic field technologies
The kilogram is the only remaining base unit in the International System of Units (SI) whose definition is based on a single physical artifact rather than on
J P. Snyder, Jon R. Pratt, Matthew A. Davies, S J. Smith
This paper describes a new device that uses a non-contact force actuator in conjunction with spindle rotation to produce an impulsive periodic driving force on
Sensors are used in various industries, ranging from aerospace, automotive, biomedicine, building, industrial automation, manufacturing, and process control to
Hui-Min Huang, Elena R. Messina, Harry A. Scott, James S. Albus, Frederick M. Proctor, William P. Shackleford
We describe a generic architecture that is applicable to the engineering of many real-time control problems. We further describe how UML is used to apply the
One of the potential benefits of describing software architecture is the ability to provide greater clarity and understanding than what is possible in program
John E. Bonevich, Robert D. McMichael, Chang H. Lee, P J. Chen, W Wyatt Miller, William F. Egelhoff Jr.
Anisotropy fields in excess of 120 KA/m (1500 Oe) have been produced in 3 nm to 5 nm thick polycrystalline films of Co by oblique sputtering of Ta underlayers
Over the last five years, we have developed optical technologies for in-line monitoring of extrusion. We review two areas where we have succeeded in uncovering