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Displaying 1576 - 1600 of 3087

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 …

Calibration of Ultra-Low Infrared Power at NIST

July 20, 2010
Author(s)
Solomon I. Woods, Stephen M. Carr, Adriaan C. Carter, Timothy M. Jung, Simon G. Kaplan, Raju V. Datla
… thermometer employs the superconducting transition of a tin (Sn) core and has demonstrated nano-Kelvin capability. …

Equi-Axed Grain Formation in Electrodeposited Sn-Bi

December 29, 2007
Author(s)
E Sandnes, Maureen E. Williams, Mark D. Vaudin, Gery R. Stafford
Sn is widely used as a coating in the electronics industry because it provides excellent solderability, ductility, electrical conductivity and corrosion resistance. However, Sn whiskers have been observed to grow spontaneously from Sn electrodeposits and

Whisker Formation on Electroplated Sn-Cu

June 1, 2002
Author(s)
Maureen E. Williams, C E. Johnson, Kil-Won Moon, Gery R. Stafford, C A. Handwerker, William J. Boettinger
… The probability of whisker growth on as-deposited tin (Sn) electrodeposits has been measured as a function of …

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 …

Sheath Model for Radio-Frequency-Biased, High-Density Plasmas, Valid for all O/O Iota

December 1, 2000
Author(s)
Mark A. Sobolewski
… (rf) bias applied at frequencies ω comparable to ω i , the ion plasma frequency at the edge of the sheath. The model treats ion dynamics using fluid equations, including all … than that obtained by models that neglect time-dependent ion dynamics. In particular, differences of as much as 40-50% …

Nitration of alkyl substituted 4-aryl(benzoyl)pyridynes

May 1, 1982
Author(s)
Anzor I. Mikaia, Nikolay A. Prostakov, Anatolyi Soldatenkov, AP Krapivko, AA Fomichev, AA Ustenko
… Peri-effect leading to a base peak of [M-NO2] ion in the spectra of dinitro diarenes is described along …

Chapter: Structure and phase behavior of polyampholytes and polyzwitterions

March 4, 2022
Author(s)
Phillip Pickett, Yuanchi Ma, Vivek Prabhu, Michael Lueckheide, Nicholas Posey
… the entire polymer structure. These special classes of ion-containing polymers have many applications enabled by … the unique solution-responsive behaviors of these ion-containing polymers and how their chemistry is used to …
Displaying 1576 - 1600 of 3087
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