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 4626 - 4650 of 143796

QUASAR-QUAsi-Stationary Absolute Radiance Mission

July 22, 2022
Author(s)
Eliad Peretz, Peter Plavchan, Piotr Pachowicz, Jamie Tayar, Gerard van Belle, Greg Aldering, Angelle Tanner, Justin Albert, Daniel Huber, Leonard Hanssen, Brian Alberding, Joseph P. Rice, Steven West, John Mather, Allison Youngblood, Tabetha Boyajian, Brian Stalder, Jonathan Gagne, Susana Deustua, Kayla Carmical, Andrew Lewis
This paper describes the scientific and developmental aspects behind the QUAsi-Stationary Absolute Radiance (QUASAR) mission study. The scientific motivation on which the mission is built is established, including the absolute flux calibration of standard

Fundamental Physics with a State-of-the-Art Optical Clock in Space

July 21, 2022
Author(s)
Andrei Derevianko, Kurt Gibble, Leo Hollberg, Nathan R. Newbury, Chris Oates, Marianna Safranova, Laura Sinclair
Recent advances in optical atomic clocks and optical time transfer have enabled new possibilities in precision metrology for both tests of fundamental physics and timing applications. Here we describe a space mission concept that would place a state-of-the

Microstructure changes during failure of PVDF-based photovoltaic backsheets

July 21, 2022
Author(s)
Stephanie Moffitt, Po-Chang Pan, Lakesha Perry, Michael Kempe, Jared Tracy, Kaushik Choudhury, Xiaohong Gu
The backsheet layer of a solar module provides a safety and environmental barrier to the high voltages running through the photovoltaic (PV) cells and electrical contacts within the core of the module. However, in the past decade, backsheet cracking has

Ultrafast stiffening of concentrated thermoresponsive polymer-mineral suspensions

July 21, 2022
Author(s)
Edward Garboczi, Sharu Kandy, Iman Mehdipour, Narayanan Neithalath, Aditya Kumar, Mathieu Bauchy, Samanvaya Srivastava, Torben Gaedt, Gaurav Sant
Extrusion-based 3D printing with rapidly hardening polymeric materials is capable of building almost any conceivable structure. However, concrete, one of the most widely used materials for large-scale structural components, is generally based on inorganic

Metasurface on integrated photonic platform: from mode converters to machine learning

July 20, 2022
Author(s)
Zi Wang, Yahui Xiao, Kun Liao, Tiantian Li, Hao Song, Haoshuo Chen, S M Zia Uddin, Dun Mao, Feifan Wang, Zhiping Zhou, Bo Yuan, Wei Jiang, Nikolas Fontaine, Amit Agrawal, Alan Willner, Xiaoyong Yu, Tingyi Gu
Integrated photonic circuits are created as a small form factor and robust analogue for fiber-based optical systems, from wavelength-division multiplication transceivers to more recent mode-division multiplex-ing components. Silicon nanowire waveguides

Security Guidance for First Responder Mobile and Wearable Devices

July 20, 2022
Author(s)
Gema Howell, Kevin Gerard Brady, Don Harriss, Scott Ledgerwood
Public safety officials utilizing the forthcoming public safety broadband networks will have access to devices, such as mobile devices, tablets and wearables. These devices offer new ways for first responders to complete their missions but may also
Displaying 4626 - 4650 of 143796
Was this page helpful?