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Displaying 2751 - 2775 of 3759

Single-atom trapping in a metasurface-lens optical tweezer

August 1, 2022
Author(s)
Ting-Wei Hsu, Wenqi Zhu, Tobias Thiele, Mark Brown, Scott Papp, Amit Agrawal, Cindy Regal
Single neutral atoms in optical tweezers have become an important platform for quantum simulation, computing, and metrology [1-3]. With ground-up control similar to trapped ions, individual atoms can be prepared and entangled [2, 4, 5], and the scalability

Quantum entanglement between an atom and a molecule

May 20, 2020
Author(s)
Yiheng Lin, David Leibrandt, Dietrich Leibfried, Chin-wen Chou
… entanglement between internal states of a 40Ca+ atomic ion and states of the rotation of a 40CaH+ molecular ion. The qubit addressed in the molecule has a frequency of …

Complex Magnetic Incommensurability and Electronic Charge Transfer through the Ferroelectric Transition in Multiferroic Co 3 TeO 6

July 25, 2017
Author(s)
Chi-Hung Lee, Chin-Wei Wang, Yang Zhao, Wen-Hsien Li, Jeffrey W. Lynn, A. Brooks Harris, Kirrily Rule, Hung-Duen Yang, Helmuth Berger
Polarized and unpolarized neutron diffractions have been carried out to investigate the nature of the magnetic structures and transitions in monoclinic Co 3TeO 6. As the temperature is lowered: below T M1 = 26 K long range order develops, which is fully

Tungsten L Transition Line Shapes and Energy Shifts Resulting from Ionization in Warm Dense Matter

April 18, 2013
Author(s)
Lawrence T. Hudson, John F. Seely, Bruce V. Weber, D. G. Phipps, Nino R. Pereira, D Mosher, K. Slabkowska, M. Polasik, J Rzadkiewicz, S Hansen, Uri Feldman, Joseph W. Schumer
High resolution spectra of the W L transitions in the energy range 8 keV to 12 keV from warm dense plasmas generated by the Naval Research Laboratory’s Gamble III pulsed power machine were recorded by a transmission-crystal x-ray spectrometer with ± 2 eV

In situ Formation of Silver Nanoparticles in Photocrosslinking Polymers

February 2, 2011
Author(s)
Yajun Cheng, Diana N. Zeiger, John A. Howarter, Xinran Zhang, Nancy Lin, Joseph M. Antonucci, Sheng Lin-Gibson
… free radical polymerization with in situ silver ion reduction. A polymerizable methacrylate bearing a … infrared spectroscopy (FTIR) revealed that the silver ion reduction had no significant effect on the degree of …

Organic Semiconductor Donor Acceptor Blend Nanoparticle Photocatalysts for Highly Efficient Hydrogen Evolution from Water Under Visible Light

February 3, 2020
Author(s)
Jan Kosco, Matthew Bidwell, Hyojung Cha, Tyler Martin, Calvyn Howells, Michael Sachs, Dalaver Anjum, Weimin Zhang, Sandra Gonzalez Lopez, Lisheng Zhang, Frederic Laquai, Dean DeLongchamp, James Durrant, Iain McCulloch
… Blend Nanoparticle Photocatalysts for Highly Efficient Hydrogen Evolution from Water Under Visible Light …

Magnetic Order and Instability in Newly Synthesized CoSeAs Marcasite

May 13, 2020
Author(s)
Yiyao Chen, G. Yumnam, A. Dahal, Jose Rodriguez Rivera, Guangyong Xu, T. Heitmann, D. K. Singh
Marcasite class of compounds provide facile platform to explore novel phenomena of fundamental and technological importance, such as unconventional superconductivity or high performance electrocatalyst. We report the synthesis and experimental

Structural Calcium (Trypsin, Subtilisin)

February 19, 2017
Author(s)
G L. Gilliland, A Teplyakov
There are about 40 families of serine proteases defined by amino acid sequence similarities that can be further grouped into 7 clans on the basis of their tertiary structure and the order of the catalytic triad. 1 Members of clans SA and SB are

Electronic Nature of the Lock-in Magnetic Transition in CeXAl 4 Si 2

April 25, 2016
Author(s)
J. Gunasekera, Leland Harriger, A. Dahal, A. Maurya, T.W. Heitmann, Steven M.T. Disseler, A. Thamizhavel, S. Dhar, D. J. Singh, D. K. Singh
We have investigated the underlying magnetism in newly discovered single crystal Kondo lattices CeXAl 4Si 2, where X = Rh, Ir. We show that the compound undergoes an incommensurate-to- commensurate magnetic transition at Tc = 9.19 K (10.75 K in Ir). The

Quasilocal Critical Nature of Cooperative Paramagnetic Fluctuations in CaRuO 3 Metal

June 8, 2015
Author(s)
J. Gunasekera, Leland Harriger, T. Heitmann, A. Dahal, H. Knoll, D. K. Singh
We report new observation of cooperative paramagnetic fluctuations of Ru 4+ spins that coexist with the non-Fermi liquid state in CaRuO 3 perovskite below T22 K. Detailed electrical, magnetic and neutron scattering measurements reveal that the Ru R+ ions

Optically pumped semiconductor lasers for atomic and molecular physics

February 7, 2015
Author(s)
Dietrich G. Leibfried, Shaun Burd, Andrew C. Wilson, David J. Wineland
Experiments in atomic, molecular and optical (AMO) physics rely on lasers at many different wavelengths and with varying requirements on spectral linewidth, power and intensity stability. Optically pumped semiconductor lasers (OPSLs), when combined with
Displaying 2751 - 2775 of 3759
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