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Displaying 1676 - 1700 of 74079

Standards and Guidelines in Forensic Odontology

October 11, 2022
Author(s)
Karen Reczek
This report provides supplemental information to NISTIR 8352 Bitemark Analysis: A NIST Scientific Foundation Review. Standards and guidelines from the American Dental Association (ADA) and the International Organization of Standardization (ISO) as well as

Unravelled and Glassy Magnetism in PbFe 1/2 Nb 1/2 O 3 - (2) Neutron Scattering

October 11, 2022
Author(s)
C. Stock, B. Roessli, Peter M. Gehring, Jose Rodriguez Rivera, N. Giles-Donovan, S. Cochran, Guangyong Xu, P. Manuel, M. J. Gutmann, William D. Ratcliff, T. Fennell, Y. Su, X. Li, H. Luo
We apply neutron scattering to investigate the magnetism in the relaxor ferroelectric PbFe 1/2Nb 1/2O 3 (PFN). Similar to the lack of spatially long-range ferroelectric order in prototypical relaxors like Pb(Mg,Zn) 1/3Nb 2/3O 3 (PMN and PZN), spatially

Bi 12 O 17 Cl 2 with a Sextuple Bi-O Layer Composed of Rock-Salt and Fluorite Units and its Structural Conversion through Fluorination to Enhance Photocatalytic Activity

October 10, 2022
Author(s)
Daichi Kato, Osamu Tomita, Ryky Nelson, Maria A. Kirsanova, Richard Dronskowski, Hajime Suzuki, Chengchao Zhong, Cedric Tassel, Kohdai Ishida, Yosuke Matsuzaki, Craig Brown, Koji Fujita, Kotaro Fujii, Masatomo Yashima, Yoji Kobayashi, Akinori Saeki, Itaru Oikawa, Hitoshi Takamura, Ryu Abe, Hiroshi Kageyama, Tatiana E. Gorelik, Artem M. Abakumov
Layered bismuth oxyhalides with bilayered (Bi 2O 2) fluorite slabs are promising visible-light photocatalysts because of the ability to control the valence band levels. Here we show that a structurally uncharacterized Bi 12O 17Cl 2, which has been

Glycosylation and the global virome

October 10, 2022
Author(s)
Cassandra Pegg, Benjamin Schulz, Ben Neely, Gregory Albery, Colin Carlson
The sugars that coat the outsides of viruses and host cells are key to successful disease transmission, but they remain understudied compared to other molecular features. Understanding the comparative zoology of glycosylation - and harnessing it for

Demonstration of Superconducting Optoelectronic Single-Photon Synapses

October 6, 2022
Author(s)
Saeed Khan, Bryce Primavera, Jeff Chiles, Adam McCaughan, Sonia Buckley, Alexander Tait, Adriana Lita, John Biesecker, Anna Fox, David Olaya, Richard Mirin, Sae Woo Nam, Jeff Shainline
Superconducting optoelectronic hardware is being explored as a path towards artificial spiking neural networks with unprecedented scales of complexity and computational ability. Such hardware combines integrated-photonic components for few-photon, light

NIST Neutron Source Preconceptual Design

October 5, 2022
Author(s)
Dagistan Sahin, Osman Celikten, Robert Williams, Jeremy Cook, Abdullah Weiss, Thomas Newton, David Diamond, Charles F. Majkrzak, Hubert King, Joy Shen, Anil Gurgen, Eliezer Nahmani, Idan Baroukh, Lap-Yan Cheng
The National Bureau of Standards Reactor (NBSR) at the NIST Center for Neutron Research (NCNR) provides a safe and reliable neutron source for the thousands of visiting U.S. and international researchers annually. A new state-of-the-art research reactor

Periodic Table of the Elements

October 5, 2022
Author(s)
Karen Olsen
The periodic table contains NIST's latest critically evaluated data for atomic properties of the elements.

Architecture Definition in Complex System Design Using Model Theory

October 4, 2022
Author(s)
Charles Dickerson, Michael Wilkenson, Eugenie Hunsicker, Siyuan Ji, Mole Li, Yves Bernard, Graham Bleakley, Peter O. Denno
Architecture Definition, which is central to system design, is one of the two most used technical processes in the practice of model-based systems engineering. In this paper a fundamental approach to architecture definition is presented and demonstrated

Contactless Excitation of Acoustic Resonance in Thin Wafers

October 4, 2022
Author(s)
Gan Zhai, Yizhou Xin, Cameron Kopas, Ella Lachman, Mark Field, Josh Y Mutus, Katarina Cicak, Joe Aumentado, Zuhawn Sung, William Halperin
Contactless excitation and detection of high harmonic acoustic overtones in a thin single crystal are described using radio frequency spectroscopy techniques. Single crystal [001] silicon wafer samples were investigated, one side covered with a Nb thin

Density changes in amorphous silicon induced by swift heavy ions

October 4, 2022
Author(s)
Sjoerd Roorda, Amelie Lacroix, Stephanie Codsi, Gabrielle Long, Fan Zhang, Steven Weigand, Christina Trautmann
Pure and gold-doped amorphous silicon membranes were irradiated with swift heavy ions (75 MeV Ag or 1.1 GeV Au ions) and studied by small angle X-ray scattering. The samples that were irradiated with 1.1 GeV Au ions produced a scattering pattern consistent

Hybrid Quantum-Edge Computing: A New Computing Paradigm

October 4, 2022
Author(s)
Lijun Ma, Leah Ding
Edge computing has emerged to support the computational demand of delay-sensitive applications in which substantial computing and storage are deployed at the network edge in close proximity to data sources. The vision of a hybrid quantum-edge is to provide

Hyperspectral photon-counting optical time domain reflectometry

October 4, 2022
Author(s)
Anouar Rahmouni, Samprity Saha, Oliver T. Slattery, Thomas Gerrits
Optical time-domain reflectometry (OTDR) is one of the most used techniques for nondestructive characterization of optical fiber links. Although conventional OTDR exhibits good performance in classical network applications, photoncounting OTDR (ν-OTDR)

Portable polarization-entangled photon source & receiver toolset for quantum network metrology

October 4, 2022
Author(s)
Anouar Rahmouni, Thomas Gerrits, Paulina Kuo, Dileep Reddy, Lijun Ma, Xiao Tang, Oliver T. Slattery
A quantum network will consist of many physically separated nodes connected by quantum communication channels that distribute entanglement between them. Such nodes will require mechanisms for the generation, routing, and measurement of quantum states to
Displaying 1676 - 1700 of 74079