U.S. flag

An official website of the United States government

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.

Search Publications

NIST Authors in Bold

Displaying 2626 - 2650 of 4635

Green Fluorescent Protein in Inertially Injected Aqueous Nanodroplets

January 30, 2008
Author(s)
Jianyong Tang, Ana Jofre, Geoffrey Lowman, Rani Kishore, Joseph E. Reiner, Kristian Helmerson, Lori S. Goldner, M E. Greene
We inertially inject and study the contents of optically trappable aqueous nanodroplets (hydrosomes) emulsified in a perfluorinated matrix. A new piezoelectric actuated device for production of single hydrosomes on demand is introduced. Hydrosomes

Intramural comparison of NIST laser and optical fiber power calibrations

March 1, 2004
Author(s)
John H. Lehman, Igor Vayshenker, David J. Livigni, Joshua A. Hadler
… document, ISO 17025. The check standards are two optical-trap detectors: one based on silicon and the other on indium … and fiber coupled laser light; (4) the pyroelectric wedge trap detector, which measures light from a lamp source and …

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 …

NMR and Metabolomics -A Roadmap for the Future

July 23, 2022
Author(s)
Tracey Johnston, David Wishart, Leo Cheng, Valerie Copie, Arthur Edison, Hamid Eghbalnia, Jeffrey Hoch, Goncalo Gouveia, Wimal Pathmasiri, Robert Powers, Llyod Sumner, Mario Uchimiya
… no need for chemical derivatization, and it is the "gold standard" for the identification of novel compounds. … that readily ionize, which is further diminished by ion-suppression common to complex, heterogenous mixtures. …

Imaging the Phase of an Evolving Bose-Einstein Condensate Wave Function

September 1, 2000
Author(s)
J E. Simsarian, J Denschlag, M Edwards, Charles W. Clark, Lu Deng, Edward W. Hagley, Kristian Helmerson, S L. Rolston, William D. Phillips
… phase. After releasing the BEC from the magnetic trap, the phase develops a quadratic form which we measure. …

Elastic and Inelastic Collisions of Cold Spin-Polarized 133 Cs Atoms

August 1, 1998
Author(s)
P J. Leo, Eite Tiesinga, Paul S. Julienne, D K. Walter, S Kadlecek, T G. Walker
We present theoretical calculations of thermally averaged elastic cross sections and spin-relaxation rate coefficients in the temperature range 0.1 to 300 K for Magnetically trapped doubly polarized cesium atoms. The calculations reproduce the recent

Polyelectrolyte association and solvation

July 10, 2018
Author(s)
Alexandros Chremos, Jack F. Douglas
There has been significant interest in the tendency of highly charged particles having the same charge to form dynamic clusters in solution, but an accepted theoretical framework that can account for this ubiquitous phenomenon has been slow to develop. The

Temperature dependent 29Si incorporation during deposition of highly enriched 28Si films

November 16, 2017
Author(s)
Kevin J. Dwyer, Hyun S. Kim, David S. Simons, Joshua M. Pomeroy
… into highly enriched 28Si films deposited by hyperthermal ion beams at elevated temperatures in the dilute presence of … in situ beyond 99.99998 % 28Si onto Si(100) using an ion beam deposition system and seek to systematically vary … measure the impact on quantum coherence. We use secondary ion mass spectrometry to measure the residual 29Si isotope …

Interpretation of Effects at the Static Fatigue Limit of Soda-Lime-Silicate Glass

December 1, 2005
Author(s)
Theo Fett, J -. Guin, Sheldon M. Wiederhorn
… layer is built up on the crack surface as a consequence of ion exchange at the crack tip. This model extends the one presented earlier by Bunker and Michalske. Ion exchange between hydronium (H3O+) in the solution and … by the basic solutions that form as a consequence of ion exchange; for the fact that crack tip bifurcation is …

2,5-Dihydroxybenzoic Acid: Laser Desorption/Ionisation as a Function of Elevated Temperature

March 1, 2005
Author(s)
William E. Wallace, Mark Arnould, R Knochenmuss
… dependence of laser desorption/ionization (LDI) ion yields has been measured for 2,5-dihydroxybenzoic acid … C using time-of-flight mass spectrometry. A steep rise in ion production occurs at 90 C, achieving a maximum between … of the sample into the vacuum. The overall trend in ion production is well described by a comprehensive two-step …

Progress Toward Corrugated Feed Horn Arrays in Silicon

December 16, 2009
Author(s)
Joseph W. Britton, Ki W. Yoon, James A. Beall, Daniel T. Becker, Hsiao-Mei Cho, Gene C. Hilton, Michael D. Niemack, Kent D. Irwin
… consist of hundreds of platelet feed horns assembled from gold coated stacks of micromachined silicon wafers. As a …
Displaying 2626 - 2650 of 4635
Was this page helpful?