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 1251 - 1275 of 74066

Single-modulator, direct frequency comb spectroscopy via serrodyne modulation

February 3, 2023
Author(s)
David Long, Sean Bresler, Yiliang Bao, Benjamin Reschovsky, Thomas W. LeBrun, Jason J. Gorman
Traditional electro-optic frequency comb spectrometers rely upon the use of an acousto-optic modulator (AOM) to provide a differential frequency shift between probe and local oscillator (LO) legs of the interferometer. Here we show that these modulators

All optical operation of a superconducting photonic interface

February 2, 2023
Author(s)
Frederik Thiele, Thomas Hummel, Adam McCaughan, Julian Brockmeier, Maximilian Protte, Victor Quiring, Sebastian Lengeling, Christof Eigner, Christine Silberhorn, Tim Bartley
Advanced electro-optic processing combines electrical control with optical modulation and detection. For quan-tum photonic applications these processes need to be carried out at the single photon level with high efficiencyand low decoherence. Integrated

Digital Signature Standard (DSS)

February 2, 2023
Author(s)
Lily Chen, Dustin Moody, Andrew Regenscheid, Angela Robinson
This standard specifies a suite of algorithms that can be used to generate a digital signature. Digital signatures are used to detect unauthorized modifications to data and to authenticate the identity of the signatory. In addition, the recipient of signed

Nondestructive quantification of single crystal elasticity for additively manufactured SB-CoNi-10C, IN625, and Ti64

February 2, 2023
Author(s)
Jeff Rossin, Patrick Leser, Jake Benzing, Chris Torbet, Peter Dillon, Stephen Smith, Samantha Daly, Tresa Pollock
Resonant ultrasound spectroscopy (RUS) is capable of determining the single crystal elastic constants from polycrystalline specimens with known crystallographic texture. However, the calculated single crystal elastic constants vary with the measured

A Guide to United States Personal Protective Equipment Compliance Requirements

February 1, 2023
Author(s)
Jennifer Marshall, Erik Puskar, Lisa Benson
This Guide addresses compliance requirements for personal protective Equipment (PPE) used in the workplace, except for PPE used in a nuclear or medical setting. Several U.S. federal agencies administer regulations associated with Personal Protective

A method for pole figure measurements via a dynamic segmented spiral scheme

February 1, 2023
Author(s)
Surya Chandramouleeswaran, Adam Creuziger, Kip Findley
A new method for pole figure measurement is described, titled a dynamic segmented spiral scheme. Compared to schemes currently in use, the dynamically segmented spiral scheme was shown to have advantages in term of evenness of pole figure coverage, time

A Non-Intrusive Fluorescent Pattern for Internal Microscale Strain Measurements Using Digital Image Correlation

February 1, 2023
Author(s)
Ami Ahure Powell, William Mulhearn, Shawn Chen, Stephan J. Stranick, Jeffrey Gilman, Mark Iadicola, Jeremiah Woodcock
A non-intrusive and non-disruptive internal fluorescent pattern is designed, developed, and tested using digital image correlation (DIC), an effective non-contact optical method, to measure deformation at internal planes of a polymer matrix material. The

Dynamic structural and microstructural responses of a metal organic framework type material to carbon dioxide under dual gas flow and supercritical conditions

February 1, 2023
Author(s)
Andrew J. Allen, Eric J. Cockayne, Winnie Wong-Ng, Jeffrey Culp, Ivan Kuzmenko
The structural and microstructural responses of a model metal-organic framework (MOF) material, Ni(3-Methy-4,4'-bipyridine)[Ni(CN)4] (Ni-BpyMe or PICNIC 21), to CO2 adsorption and desorption are reported for in situ small-angle X-ray scattering (SAXS) and

Optical-cavity-based primary sound standard

February 1, 2023
Author(s)
Akobuije Chijioke, Richard A. Allen, Steven E. Fick, David Long, Benjamin Reschovsky, Jared Strait, Randall P. Wagner
We propose an optical sound standard in which the sound pressure is directly measured by using an optical cavity to observe the induced change in the refractive index of air. In this method, an optical cavity is coupled with an acoustic cavity, with the

They're phishing for you: be the one that got away

February 1, 2023
Author(s)
Michael Galler
Cybersecurity has been a topic of increasing importance to the building services community for several years. While fully securing large and complex building systems can be complicated, some basic precautions can easily be applied to any system, and some

Ubiquitous Spin Freezing in the Superconducting State of UTe2

February 1, 2023
Author(s)
Shyam Sundar, Nasrin Azari, Mariah Goeks, Shayan Gheidi, Mae Abedi, Michael Yakovlev, Sarah Dunsiger, John Wilkinson, Stephen Blundell, Tristin Metz, Ian Hayes, Shanta Saha, Sangyun Lee, Andrew Woods, Roman Movshovich, Sean Thomas, Nicholas Butch, Priscila Rosa, Johnpierre Paglione, Jeff Sonier

Uncertainty

February 1, 2023
Author(s)
Robert D. Chirico, Eugene Paulechka, Vladimir Diky, Ala Bazyleva
N/A
Displaying 1251 - 1275 of 74066