NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

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 13651 - 13675 of 73697

Trion Valley Coherence in Monolayer Semiconductors

May 22, 2017
Author(s)
Kai Hao, Lixiang Xu, Wu Fengcheng, Philip Nagler, Kha Tran, Xin Ma, Tobias Korn, Allan H. MacDonald, Xiaoqin Li, Galan Moody
The emerging field of valleytronics aims to exploit the valley pseudospin of electrons residing near Bloch band extrema as an information carrier. Recent experiments demonstrating optical generation and manipulation of exciton valley coherence (the

Devices in advanced technology nodes: application-specific characterization

May 21, 2017
Author(s)
gennadi bersuker, Dmitry Veksler, Donald Pierce, Maribeth Mason
Scaled advanced node devices incorporate new combinations of semiconductor materials and ultra-thin multi-layer dielectric stacks. As a consequence, inter-material interactions may unpredictably affect transistor electrical characteristics and reliability

Preservation of surface conductivity and dielectric loss tangent in large-scale, encapsulated epitaxial graphene measured by non-contact microwave cavity perturbations

May 19, 2017
Author(s)
Albert F. Rigosi, Nicholas R. Glavin, Chieh-I Liu, Yanfei Yang, Jan Obrzut, Heather M. Hill, Jiuning Hu, Hsin Y. Lee, Angela R. Hight Walker, Curt A. Richter, Randolph E. Elmquist, David B. Newell
Regarding the improvement of current quantized Hall resistance (QHR) standards, one promising avenue is the growth of homogeneous monolayer epitaxial graphene (EG). A clean and simple process was used to produce large, precise areas of EG. Properties like

A telecom-band cavity-enhanced single-photon source with high klyshko efficiencies

May 18, 2017
Author(s)
Thomas Gerrits, Lu Xiyuan, Steven Rogers, W C. Wiang, Sae Woo Nam, Qiang Lin
We develop an on-chip telecom-band single-photon source with Klyshko efficiencies up to 48%, the highest value for cavity-enhanced photon sources. For the first time, we relate Klyshko efficiency to high-order correlations and verify this relation

Determination of the molar mass of argon from a high precision acoustic comparison

May 18, 2017
Author(s)
XiaoJuan Feng, Jintao Zhang, Michael R. Moldover, Inseok Yang, Mark Plimmer, H. Lin
This article describes the accurate determination of the molar mass of a sample of argon gas used for a determination of the Boltzmann constant. The method due to one of the authors [Moldover et al., J. Res. Natl. Bur. Stand. 93, 85-144 (1988)] uses the

Optomechanical Quantum Correlations

May 18, 2017
Author(s)
Thomas P. Purdy, Karen E. Grutter, Kartik A. Srinivasan, Nikolai N. Klimov, Zeeshan Ahmed, Jacob M. Taylor
We present methods to measure optical quantum correlations arising from an optomechanical interaction even when large classical noise sources are present. We demonstrate quantum- backaction-noise-calibrated Brownian motion thermometry as a metrological

Quantum theory solved by experiment

May 18, 2017
Author(s)
Ian B. Spielman
Systems of quantum objects can be characterized by the correlations between the objects. A technique has been developed to precisely measure even the most delicate correlations, allowing theoretical models of quantum systems to be tested. See Schweigler et

Quasi-deterministic Model for Doppler Spread in Millimeter-wave Commmunication Systems

May 18, 2017
Author(s)
Jian Wang, Camillo Gentile, Peter B. Papazian, Jae-Kark Choi, Jelena Senic
The most salient feature differentiating millimeter-wave communication systems from their predecessors will be the steerable pencilbeam antennas at the transceivers. As opposed to conventional widebeam antennas, only a few multipath components will be

Advances in Next-Generation Polyolefin Standard Reference Materials

May 17, 2017
Author(s)
Sara V. Orski, Wesley S. Farrell, Andre M. Striegel, Kathryn L. Beers
NIST’s approach to modernizing its synthetic polymer reference materials is to target precise and robust synthetic methods, making homogeneous standards than can be easily tailored to include desired chemistry, molar mass, and topography. This strategy

Correlations for the Viscosity and Thermal Conductivity of Ethyl Fluoride (R161)

May 17, 2017
Author(s)
Ch. M. Tsolakidou, Marc J. Assael, Marcia L. Huber, Richard A. Perkins
This paper presents new wide-ranging correlations for the viscosity and thermal conductivity of ethyl fluoride (R161) based on critically evaluated experimental data. The correlations are designed to be used with a recently published equation of state that

Tower based measurement network design for the North East Corridor project

May 17, 2017
Author(s)
Israel Lopez Coto, Subhomoy Ghosh, Kuldeep R. Prasad, James R. Whetstone
The North-East Corridor project aims to use a top-down inversion method to quantify sources of Greenhouse Gas (GHG) emissions in the urban areas of, in the first phase, Washington DC and Baltimore at approximately 1km2 resolutions. Since inversion methods

A practical superconducting-microcalorimeter X-ray spectrometer for beamline and laboratory science

May 16, 2017
Author(s)
William B. Doriese, Peter Abbamonte, Douglas A. Bennett, Edward V. Denison, Yizhi Fang, Daniel A. Fischer, Colin P. Fitzgerald, Joseph W. Fowler, Johnathon D. Gard, Gene C. Hilton, Cherno Jaye, Jessica L. McChesney, Luis Miaja Avila, Kelsey M. Morgan, Young Il Joe, Galen C. O'Neil, Carl D. Reintsema, Fanny Rodolakis, Daniel R. Schmidt, Hideyuki Tatsuno, Jens Uhlig, Leila R. Vale, Joel N. Ullom, Daniel S. Swetz
We describe a series of microcalorimeter X-ray spectrometers designed for a broad suite of measurement applications. The chief advantage of this type of spectrometer is that it can be orders of magnitude more efficient at collecting X-rays than more

Influence of Aggregate Characteristics on Concrete Performance

May 16, 2017
Author(s)
Dale P. Bentz, Scott Z. Jones, Paul E. Stutzman, Joshua Arnold, Michael Boisclair, Paul Rothfeld, Jussara Tanesi, Haejin Kim, Jose Munoz, Mengesha Beyene
While the influence of paste properties on concrete performance has been extensively studied and in many cases reduced to quantitative relationships, that between aggregate characteristics and concrete performance has not been investigated in detail. Based

Modeling flame extinction and reignition in large eddy simulations with fast chemistry

May 16, 2017
Author(s)
James White, Sebastien Vilfayeau, Andre Marshall, Arnaud Trouve, Randall McDermott
This work seeks to support the validation of large eddy simulation (LES) models used to simulate the response of fires to the activation of a suppression system. The emphasis in the present study is on the prediction of flame weakening and extinction when

Optical Asymmetry and Nonlinear Light Scattering from Gold Nanorods

May 16, 2017
Author(s)
Andrew Herzing
A systematic study is presented of the intensity-dependent nonlinear light scattering spectra of gold nanorods under resonant excitation of the longitudinal surface plasmon resonance (SPR). The spectra exhibit features due to coherent second and third

A Microporous Hydrogen-Bonded Organic Framework with Amine Sites for Selective Recognition of Small Molecules

May 15, 2017
Author(s)
Hailong Wang, Hui Wu, Jinglan Kan, Ganggang Chang, Zizhu Yao, Bin Li, Wei Zhou, Shengchang Xiang, John Cong-Gui Zhao, Banglin Chen
A three-dimensional hydrogen-bonded organic framework (HOF-9) with suitable pore sizes and functional amine groups on the pore surfaces has been realized, exhibiting a highly selective recognition towards pyridine over BTX (BTX stans for benzene, toluene
Displaying 13651 - 13675 of 73697
Was this page helpful?