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 1 - 25 of 2745

Bootstrap Metric for Quantifying the Depth Resolution of 3D Sensors

April 27, 2026
Author(s)
Prem Rachakonda, Hariharan Iyer, Marek Franaszek, Kamel Saidi
Depth resolution of a 3D imaging system or 3D sensor is defined as the smallest change in physical depth that causes a detectable change in the corresponding measured or derived depth. The ability of a sensor to resolve depth on a particular target is

The Integration of Focused Ultrasonication, ddPCR, and Flow Cytometry Effectively Estimates Genome Copies per Cell and Enhances DNA Extraction Efficiency in Escherichia coli Samples

April 16, 2026
Author(s)
Sandra Da Silva, Nancy Lin, Kirsten Parratt, Hariharan Iyer, Guilherme Pinheiro, Holly Hack, Ian Hines, Stephanie Servetas
Microbiology researchers rely on nucleic acid measurement techniques, such as the quantitative polymerase chain reaction (qPCR) and DNA sequencing, to address diverse scientific and practical challenges. These applications range from detecting microbial

Ultra-High Speed Printing Regime in Laser Powder Bed Fusion of Highly Reflective Metals

April 5, 2026
Author(s)
Natalya Kublik, Laura Duenas Gonzalez, David Deisenroth, zhengtao gan, Bruno Azeredo
Additive manufacturing of highly reflective metals, such as copper and aluminum, often entail excessive energy losses, especially in laser powder bed fusion (LPBF). To compensate for reflected losses, high powered lasers and low scan speeds (i.e., ≤ 0.8 m

Accurate Volume Determination for Low Gas Flow Standards

March 17, 2026
Author(s)
Jodie Pope, Christopher Crowley, Max Low, John Wright, Aaron Johnson
The National Institute of Standards and Technology (NIST) has developed the Semiconductor Low Flow Standard (SLowFlowS), a new rate-of-rise (RoR) gas flow standard capable of measuring flows as low as 0.01 standard cm³/min. SLowFlowS incorporates two

Advancing evanescent light scattering microscopy for single-particle characterization of gene delivery nanoparticles

March 4, 2026
Author(s)
Jagat Budhathoki, Gregory Cooksey, Matthew DiSalvo, Thomas Germer, Peter Bajcsy, Edward Kwee, Aaron Goldfain, Alexander Peterson
Precise and reproducible single-nanoparticle characterization is essential for advancing gene therapy, where viral vectors encapsulating therapeutic genes must be evaluated under formulation-relevant conditions. We present a label-free optical platform

2025 NIST Summary of U.S. Legal Metrology Activities

February 17, 2026
Author(s)
Loren Minnich, Gloria Lee, John McGuire, Jan Konijnenburg, Isabel Baucom, Juana Williams, Katrice Lippa, David Sefcik
The NIST Office of Weights and Measures (OWM) presents its second issue of the 2024 NIST Annual Summary of U.S. Legal Metrology Activities report. This report includes a summary of changes made to NIST Handbook 44 (2026) Specifications, Tolerances and

NIST Handbook 44: Specifications, Tolerances and Other Technical Requirements for Weighing and Measuring Devices (2026 Ed.)

January 5, 2026
Author(s)
Loren Minnich, Gloria Lee, Juana Williams, Isabel Baucom, Jan Konijnenburg, John McGuire, Katrice Lippa
NIST Handbook 44 includes specifications, tolerances, and other technical requirements for weighing and measuring devices. These requirements are intended to encourage the design, installation, testing, and use of weighing and measuring devices that

NIST Handbook 133: Checking the Net Contents of Packaged Goods (2026 Ed.)

December 29, 2025
Author(s)
John McGuire, David Sefcik, Loren Minnich, Elizabeth Benham, Isabel Baucom, Katrice Lippa
This handbook has been prepared as a procedural guide for the compliance testing of net content statements on packaged goods. Compliance testing of packaged goods is the determination of the conformance results of packaging, distribution, and sale of

Chirped magneto-optical trap of molybdenum

December 12, 2025
Author(s)
Sai Naga Manoj Paladugu, Nickolas Pilgram, Stephen Eckel, Eric Norrgard
We have directly loaded a cryogenic beam of molybdenum atoms into a magneto-optical trap. By chirping the detuning of the trapping lasers, we were able to enhance the number of atoms loaded into the trap by more than a factor of 2. We optimize the trapped

Environmental Measurements: A Needs Assessment

November 19, 2025
Author(s)
Julia Marrs, David Allen, Gerald Fraser
A summary is provided of the presentations, discussion, and findings from a two-and-a-half-day workshop on environmental measurements focusing on needs for new measurement science and measurement standards to support the characterization of ecological

Relating Human and AI-based Detection Limits in SEM Dimensional Metrology

October 25, 2025
Author(s)
Peter Bajcsy, Pushkar Sathe, Andras Vladar
Background: The nanoscale measurements of critical dimensions in semiconductor manufacturing rely on scanning electron microscopy (SEM) and SEM image analyses. The acquisition of SEM images requires a low primary electron beam current and a low dose of the
Displaying 1 - 25 of 2745
Was this page helpful?