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Displaying 7351 - 7375 of 74205

Dynamic Equivalence between Soft Star Polymers and Hard Spheres

November 19, 2019
Author(s)
Zhe Wang, Antonio Faraone, Panchao Yin, Lionel Porcar, Yun Liu, Changwoo Do, Kunlun Hong, Wei-Ren Chen
We measure a series of star polymer dispersions to study the dynamics of soft colloidal liquids. We find that as the concentration increases, the slowing of the long-time self-diffusivity of the star polymer, normalized by the short-time self-diffusivity

Eutectic Formation, V/III Ratio and Controlled Polarity Inversion in Nitrides on Silicon

November 19, 2019
Author(s)
Alexana Roshko, Matthew D. Brubaker, Paul T. Blanchard, Todd E. Harvey, Kristine A. Bertness
The crystallographic polarity of AlN grown on Si(111) by plasma assisted molecular beam epitaxy is intentionally inverted from N-polar to Al-polar at a planar boundary. The position of the inversion boundary is controlled by a two-step growth process that

Forced Edges and Graph Structure

November 19, 2019
Author(s)
Brian D. Cloteaux
For a degree sequence, its set of forced edges are the edges that appear in every realization of that sequence, while its forbidden edges appear in no realization. We examine sequences with forced or forbidden edges, showing relationships between these

Geometry Entrapment in Walk-on-Subdomains

November 19, 2019
Author(s)
Walid Keyrouz, Preston Hamlin, W. J. Thrasher, Michael V. Mascagni
One method of computing the electrostatic energy of a biomolecule in a solution combines the Walk-On-Spheres and Walk-On-Subdomains Monte Carlo algorithms. In the course of examining an implementation of this method, a performance issue was discovered in

Separation of Specific Single Enantiomer Single-Wall Carbon Nanotubes in the Large Diameter Regime

November 19, 2019
Author(s)
Jeffrey A. Fagan, Ming Zheng, Sofie Cambre, Wim Wenseleers, Benjamin Flavel, Han Li, Stephanie Reich, Georgy Gordeev, Oisin Garrity, Naga Peyyety, Ralph Krupke, Pranauv Selvasundaram
Enantiomer level isolation of single-wall carbon nanotubes (SWCNTs) in high concentration and purity for nanotubes greater than 1.1 nm in diameter is demonstrated for the first time using a twostage aqueous two-phase extraction (ATPE) technique. In total 5

A kilopixel array of superconducting nanowire single-photon detectors

November 18, 2019
Author(s)
Varun Verma, Adriana Lita, Sae Woo Nam, R P. Mirin, Emma Wollman, William Farr, Matthew Shaw
We present a 1024-element imaging array of superconducting nanowire single photon detectors (SNSPDs) using a 32x32 row-column multiplexing architecture. Large arrays are desirable for applications such as imaging, spectroscopy, or particle detection.

NIST Big Data Interoperability Framework: Volume 2, Big Data Taxonomies

November 18, 2019
Author(s)
Wo L. Chang, Nancy Grady
Big Data is a term used to describe the large amount of data in the networked, digitized, sensor-laden, information-driven world. While opportunities exist with Big Data, the data can overwhelm traditional technical approaches and the growth of data is

Quantum interference between photons from an atomic ensemble and a remote atomic ion

November 18, 2019
Author(s)
A. Craddock, J. Hannegan, D. Ornelas-Huerta, J. Siverns, A. Hachtel, E. Goldschmidt, James V. Porto, Q. Quraishi, S. Rolston
Many remote-entanglement protocols rely on the generation and interference of photons produced by nodes within a quantum network. Quantum networks based on heterogeneous nodes provide a versatile platform by utilizing the complimentary strengths of the

Influence of Board Spacing on Mitigating Wood Decking Assembly Ignition

November 17, 2019
Author(s)
Samuel L. Manzello, Sayaka Suzuki
As part of recent building code change discussions, it has been suggested that by increasing the spacing of boards, it may be possible to mitigate ignition of wood decking assemblies from wind-driven firebrand showers. An experimental series was undertaken

Application of INAA methods for KRISS infant forumla CRM analysis: Standardization of INAA at KRISS

November 15, 2019
Author(s)
Hana Cho, Kishore B. Dasari, Radojko Ja?imovi?, Rolf L. Zeisler, Nicholas Sharp, Sun-Ha Kim, Gwang Min Sun, Yong-Hyeon Yim
We have established an instrumental neutron activation analysis (INAA) method, including k0- based INAA, at the Korea Research Institute of Standards and Science (KRISS) for the certification of reference materials. As part of establishing INAA

Chalcogenide Topological Insulators

November 15, 2019
Author(s)
Joseph A. Hagmann
The purpose of this chapter is to introduce the reader to the chalcogenide materials systems that host the topological insulator phase of quantum matter. Specifically, the HgTe quantum well 2D topological insulator system and the V2VI3-type bismuth- and

Crosstalk in microwave SQUID multiplexers

November 15, 2019
Author(s)
John A. Mates, Daniel T. Becker, Douglas A. Bennett, Bradley J. Dober, Johnathon D. Gard, Gene C. Hilton, Daniel S. Swetz, Leila R. Vale, Joel N. Ullom
Low-temperature detector technologies provide extraordinary sensitivity for applications ranging from precision measurements of the cosmic microwave background to high-resolution, high-rate x-ray, and c-ray spectroscopy. To utilize this sensitivity, new

Nano-opto-electro-mechanical switches operated at CMOS-level voltages

November 15, 2019
Author(s)
Christian Haffner, Andreas Joerg, Michael Doderer, Daniel Chelladurai, Felix Mayor, Comsin Ioan Roman, Yuriy Fedoryshyn, Mikael Mazur, Maurizio Burla, Henri J. Lezec, Vladimir A. Aksyuk, Juerg Leuthold
Reprogrammable optical networks that operate in symbiosis with CMOS electronics promise to advance technologies such as optical neural networks. However, current electro-optical switching technologies fail to combine CMOS-voltages, micrometer-scale

SAGE: A proposal for a Space Atomic Gravity Explorer

November 15, 2019
Author(s)
Nathan R. Newbury, Chris Oates, Jun Ye, Guglielmo Tino, A Bassi, G Bianco, K Bongs, L Cacciapuoti, M. L. Chiofalo, X Chen, A Derevianko, W Ertme, N Gaaloul, Patrick Gill, P. W. Graham, J. M. Hogan, L Iess, Mark Kasevich, H Katori, Carsten Klempt, X Lu, Long-Sheng Ma, H Muller, A Peters, N Poli, Rasel E, G Rosi, A Roura, C Salomon, S Schiller, W Sleich, D Schlippert, F Schreck, C Schubert, Sorrentino F, Uwe Sterr, J. W. Thomsen, G Vallone, F Vetrano, P Villoresi, W von Klitzing, P Wolf, Nan Yu, M.S. Zhan
The proposed mission \Space Atomic Gravity Explorer (SAGE) has the scientifi c objective to investigate gravitational waves, dark matter, and other fundamental aspects of gravity as well as the connection between gravitational physics and quantum physics

Atomic-scale mechanism of unidirectional oxide growth

November 14, 2019
Author(s)
Xianhu Sun, Wenhui Zhu, Dongxiang WU, Zhenyu Liu, Xiaobo Chen, Lu Yuan, Guofeng Wang, Renu Sharma, Guangwen Zhou
A fundamental knowledge of the unidirectional growth mechanisms is required for precise control on size, shape, and thereby functionalities of nanostructures. Using transmission electron microscopy that spatially and temporally resolves CuO nanowire growth

Physics-based Simulation of Agile Robotic Systems

November 14, 2019
Author(s)
Pavlo Piliptchak, Murat Aksu, Frederick M. Proctor, John L. Michaloski
Development and testing of industrial robot environments is hampered by the limited availability of hardware resources. Simulations provide a more accessible and readily modifiable alternative to physical testing, but also require careful design to ensure

Voter Records Interchange Common Data Format Specification Version 1.0

November 14, 2019
Author(s)
John P. Wack
This document presents a specification for voter records data interchange related to voter registration, i.e., registration requests from online voter registration made to voter registration systems, and responses to the requests returning from the voter

A critical evaluation of indentation crack lengths in air

November 13, 2019
Author(s)
Robert F. Cook
A extensive overview is presented of Vickers indentation crack lengths in ceramics in air. Measurement of such crack lengths is one of the most common and powerful assessments of the fracture properties of ceramics and the overview provides a critical
Displaying 7351 - 7375 of 74205