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Displaying 1901 - 1925 of 3842

Electron Enhanced Growth of Crystalline Gallium Nitride Thin Films at Room Temperature and 100 C Using Sequential Surface Reactions

July 1, 2016
Author(s)
Alexana Roshko, Jaclyn Sprenger, Andrew S. Cavanagh, Steven George, Huaxing Sun, Kathryn J. Wahl
… layer deposition (ALD). Trimethylgallium (Ga(CH3)3, TMG), hydrogen (H) radicals and ammonia (NH3) were employed as the … to result from the electron stimulated desorption (ESD) of hydrogen. Hydrogen ESD yields dangling bonds that facilitate TMG and …

Optical Metrology for Wavelength-Division-Multiplexed Fiber Communications

March 1, 2001
Author(s)
Sarah L. Gilbert, Shellee D. Dyer, Paul A. Williams, Allen Rose
In response to rapid changes in fiber-optic technology, the Optoelectronics Division of the National Institute of Standards and Technology has been developing techniques and standards to support the measurement of optical components and subsystems used in

Proton Dynamics of Two-Dimensional Oxalate-Bridged Coordination Polymers

August 28, 2014
Author(s)
Satoshi Miyatsu, Maiko Kofu, Atsushi Nagoe, Takeshi Yamada, Masaaki Sadakiyo, Teppei Yamada, Hiroshi Kitagawa, Madhu Sudan Tyagi, Victoria Garcia Sakai, Osamu Yamamuro
A two-dimensional porous coordination polymer (NH 4) 2HOOC(CH 2) 4COOH}[ZN 2(Co 2O 4) 3] (abbreviated to ZnADP), which accommodates water molecules between the [Zn 2(C 2O 4) 3] layers, is highly remarked as a new-type crystalline proton conductor. In order

Effects of the two-gap nature on the microwave conductivity of polycrystalline MgB2 films with a critical temperature of 39 K

December 1, 2002
Author(s)
James C. Booth, S. Y. Lee, J. H. Lee, Jung Hoon Han, S. H. Moon, H. N. Lee, John H. Claassen
… to have a "-band gap energy of #1.7 meV. For the MgB2 film ion milled down to the thickness of #320 nm, two coherence … "-band gap energy of #2.0 meV is higher than before ion milling. Reduced normalstate conductivity at TC and RS at temperatures below 15 K were found for the ion-milled film. Calculations based on the weak-coupling BCS …

Time Measurement at the Millennium

March 1, 2001
Author(s)
James C. Bergquist, Steven R. Jefferts, David J. Wineland
… The latest clocks use a single ion to measure time with an anticipated precision of on part …

Quantum harmonic oscillator spectrum analyzers

June 25, 2021
Author(s)
Jonas Keller, Panyu Hou, Katherine C. McCormick, Daniel Cole, Stephen Erickson, Jenny Wu, Andrew C. Wilson, Dietrich Leibfried
… drives with a qubit. Using the motion of a trapped ion, we experimentally demonstrate two different … our method to measure the intrinsic noise spectrum of an ion trap potential in a previously unaccessed frequency range. …

Quantum Monte Carlo for Difficult Systems

February 1, 2001
Author(s)
J A. Harkless, W A. Lester, Jr.
… studies of the propargyl radical, C 3 H 3 , peroxynitrite ion, ONOO-, nitrogen atom excited state transition energy, … nitrogen atom excited state transition, peroxynitrite ion, propargyl radical, QMC, quantum Monte Carlo, transition …

Spectroscopy of 2-aminopurine: An MCSCF Study

December 1, 1998
Author(s)
E L. Rachofsky, J B. Ross, Morris Krauss, R Osman
… shifts observed in water suggest that 2AP undergoes hydrogen bonding that better stabilizes the ground state than … potentials of these two states, the position at which this hydrogen bond forms was predicted. These results form a basis …
Displaying 1901 - 1925 of 3842
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