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Search Publications

NIST Authors in Bold

Displaying 10576 - 10600 of 73697

Some generating functions for q-polynomials

December 15, 2018
Author(s)
Howard Cohl, Roberto Costas-Santos, Tanay Wakhare
We obtain $q$-analogues of the Sylvester, Cesaro, Pasternack, and Bateman polynomials. We also derive generating functions for these polynomials.

Comprehensive Inelastic Neutron Scattering Study of the Multiferroic Mn 1-x Co x WO 4

December 14, 2018
Author(s)
Jinchen Wang, R. S. Fishman, Yiming Qiu, J. A. Fernandez-Baca, Georg Ehlers, K.-C. Liang, Yaqi Wang, Bernd Lorenz, C. W. Chu, Feng Ye
Using high-resolution inelastic neutron scattering, we examine the spin dynamics of Mn 1-xCo xWO 4 in the collinear AF1, the ac-b spiral AF2, and the ac spiral AF5 phases. The spin wave excitations are well described by a Heisenberg model with competing

Quantum optimal control of the dissipative production of a maximally entangled state

December 14, 2018
Author(s)
Karl P. Horn, Florentin Reiter, Yiheng Lin, Dietrich Leibfried, Christiane P. Koch
Entanglement generation can be robust against noise in approaches that deliberately incorporate dissipation into the system dynamics. The presence of additional dissipation channels may, however, limit fidelity and speed of the process. Here we show how

Scalable method to find the shortest path in a graph with circuits of memristors

December 14, 2018
Author(s)
Alice Mizrahi, thomas Marsh, Brian D. Hoskins, Mark D. Stiles
Finding the shortest path in a graph has applications to a wide range of optimization problems. However, algorithmic methods scale with the size of the graph in terms of time and energy. We propose a method to solve the shortest path problem using circuits

Spin-mechanical coupling of an InAs quantum dot embedded in a mechanical resonator

December 14, 2018
Author(s)
S G. Carter, A S. Bracker, Garnett W. Bryant, M Kim, C S. Kim, M Zalalutdinov, M. K. Yakes, C Czarnocki, J Casara, M Scheibner, D Gammon
We demonstrate strain-induced coupling between a hole spin in a quantum dot and mechanical motion of a cantilever. The optical transitions of quantum dots integrated into GaAs mechanical resonators are measured synchronously with the motion of the driven

Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRh 3 Si 7

December 13, 2018
Author(s)
Binod K. Rai, S. Chikara, Xiaxin Ding, Iain W. H. Oswald, R. Schonemann, V. Loganathan, A. M. Hallas, H. B. Cao, Macy Stavinoha, T. Chen, Haoran Man, Scott Carr, John Singleton, Vivien Zapf, Katherine A. Benavides, Julia Y. Chan, Q. R. Zhang, D. Rhodes, Y. C. Chiu, Luis Balicas, A. A. Aczel, Qingzhen Huang, Jeffrey W. Lynn, J. Gaudet, D. A. Sokolov, H. C. Walker, D. T. Adroja, Pengcheng Dai, Andriy H. Nevidomskyy, C.-L. Huang, E. Morosan
We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh 3Si 7. Electrical transport, magnetization, and specific heat measurements reveal antiferromagnetic order at Τ N = 7.5 K. Neutron diffraction

Diagonal Slice Four-Wave Mixing: Natural Separation of Coherent Broadening Mechanisms

December 13, 2018
Author(s)
Travis M. Autry, Geoffrey M. Diederich, Mark E. Siemens
We present an ultrafast coherent spectroscopy data acquisition scheme that samples slices of the time domain used in multidimensional coherent spectroscopy to achieve faster data collection than full spectra. We derive analytical expressions for resonance

ENABLING CONTROL SYSTEM AND CLOUD-BASED SIMULATION SERVICE INTEROPERABILITY

December 12, 2018
Author(s)
Albert W. Jones, Guodong Shao, Frank H. Riddick
The latest innovations in Information and Communication Technologies (ICT) will change manufacturing and simulation forever. Ideas such as Industry 4.0, Internet of Things, and Industrial Internet are dictating those changes. One of those changes involves

Super Charge Separation and High Voltage Phase in Na x MnO 2

December 12, 2018
Author(s)
Xi Chen, Yichao Wang, Kamila Wiaderek, Xiahan Sang, Olaf Borkiewicz, Karena Chapman, James LeBeau, Jeffrey W. Lynn, Xin Li
Na xMnO 2 shows Mnu3+^ and Mn^ 4+ charge separation with charge stripe ordering upon Na de-intercalation at x=5/8, similar to many colossal magnetoresistance materials. We show in this paper that, surprisingly, at lower Na compositions of 5/8 >x less than

The Effects of Long Range Sidechain Ordering on Backbone Ordering and Optoelectronic Properties in Semiconducting Polymers

December 12, 2018
Author(s)
Joshua H. Carpenter, Masoud Ghasemi, Eliot Gann, Indunil Angunawela, Samuel Stuard, Liang Yan, Earl RItchie, Brendan O'Connor, Dean DeLongchamp, Harald Ade
Molecular ordering and packing greatly impacts the electronic and optoelectronic properties of semiconducting polymers. Despite much prior effort, the competing or synergistic ordering of the sidechains and aromatic cores has never been fully researched

Aflatoxin-guanine DNA Adducts and Oxidatively-induced DNA Damage in Aflatoxin-treated Mice in vivo as Measured by Liquid Chromatography-Tandem Mass Spectrometry with Isotope-dilution

December 11, 2018
Author(s)
Erdem Coskun, Pawel Jaruga, Vladimir Vartanian, Onur Erdem, Patricia Egner, John D. Groopman, R. S. Lloyd, Miral M. Dizdar
Dietary exposure to aflatoxin (AFB1) is a significant reason for the incidence of hepatocellular carcinomas globally. AFB1-exposure leads to the formation of AFB1-N7-guanine (AFB1-N7-Gua) and two diastereomers of 8,9-dihydro-8-(2,6-diamino-4-oxo-3,4

Axisymmetric scalable magneto-gravitational trap for diamagnetic particle levitation

December 11, 2018
Author(s)
Kristine A. Bertness, John P. Houlton, Max L. Chen, Matthew D. Brubaker, Charles T. Rogers
We report an axisymmetric magnetic trap design for levitating diamagnetic particles. The magnetic traps each consist of two iron pole pieces passively driven by a neodymium iron boron (NdFeB) permanent magnet. The magnetic field configuration between the

Mechanical properties and off gassing characteristics of new and legacy SCBA facepieces

December 11, 2018
Author(s)
Richard Kesler, Constandinos Mitsingas, Adam G. Quiat, Tonghun Lee, Daniel Madrzykowski, Gavin Horn
In today’s structure fires, evolving fire loads and higher heat release rates mean that fires grow larger and faster than ever before. Firefighting personal protective equipment (PPE) can be subjected to these severe thermal conditions repeatedly during

Multi-pulse fitting of transition edge sensor signals from a near-infrared continuous-wave source

December 11, 2018
Author(s)
Thomas Gerrits, Adriana E. Lita, Sae Woo Nam, Jianwei Lee, Lijiong Shen, Alessandro Cere, Christian Kurtsiefer
Transition-edge sensors (TESs) are photon-number resolving calorimetric spectrometers with near unit efficiency. Their recovery time, which is on the order of microseconds, limits the number resolving ability and timing accuracy in high photon-flux
Displaying 10576 - 10600 of 73697
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