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 226 - 250 of 74527

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

Detecting fundamental chiral biosignatures in the ultraviolet polarization spectrum

April 25, 2026
Author(s)
William Sparks, Thomas Germer, Frank Robb, Kevin Hand, Michael Bramble, George Cooper, Hiroshi Imanaka
Chiral molecules are ubiquitous and necessary for life as we know it. Chirality is commonly defined as molecules composed of two non-superimposable mirror images (enantiomers). In extant life, biopolymers, including nucleic acids (DNA, RNA) are homochiral

Applying microbial ecology frameworks to microbial therapies for wildlife

April 24, 2026
Author(s)
Sally Bornbusch, Carly Muletz Wolz
Microbial ecology is increasingly incorporated into human and animal medicine via the study and purposeful manipulation of host-associated microbiomes. Microbial therapies – treatments with the aim of beneficially modulating microbiomes – are a burgeoning

Electron Spin Resonance Sensor for Portable and Adaptable Retrospective Dosimetry

April 24, 2026
Author(s)
Pragya Shrestha, Kin Cheung, Robert Gougelet, Stephen Moxim, Ileana Pazos, Jason Campbell
The demand for portable, versatile, cost-effective and high-performance tools for radiation dosimetry has increased in recent years. The development of a new, highly portable electron spin resonance (ESR) instrument represents a signifi-cant breakthrough

Quantum non-Markovian noise in randomized benchmarking of spin-boson models

April 24, 2026
Author(s)
Srilekha Gandhari, Michael Gullans
In non-Markovian systems, the current state of the system depends on the full or partial history of its past evolution. Owing to these time correlations, non-Markovian noise violates common assumptions in gate characterization protocols such as randomized

Development Toward Tungsten Transition-Edge Sensors with Improved Energy Resolution in the Optical/NIR Regime

April 22, 2026
Author(s)
Leaf Swordy, Adriana Lita, Benedikt Hampel, Daniel Swetz, Paul Szypryt, Douglas Bennett, Galen O'Neil, Michael Vissers, Joel Ullom, Richard Mirin, Martin Stevens
We formulate an energy resolution model for optical transition-edge sensors which combines aspects of existing models with the goal of better defining and constraining energy resolution optimization. The combined model is found to be in better agreement

Advancing forensic SNP typing: Insights from an interlaboratory study of the FORCE panel

April 21, 2026
Author(s)
Andreas Tillmar, Kimberly Andreaggi, Adam Staadig, Christina Amory, David Ballard, Erik Francisco Bergseth, Claus Borsting, Selena Cisana, Michael Coble, Lucinda Bella Davenport, Maria de la Puente, Katherine Gettings, Erin Gorden, Kelly Grisedale, Jennifer Daniels-Higgenbotham, Rachel Houston, Sheree HUGHES, Reet Jarving, Kevin Kiesler, Jonathan King, Maria Victoria Lareu, Odile Loreille, Dennis McNevin, Melissa Muenzler, Walther Parson, Vania Pereira, Christopher Phillips, Jorge Ruiz-Ramirez, Maarja Sadam, Jennifer Snedeker, Carolyn Steffen, Monika Stoljarova-Bibb, Peter Vallone, Jodie Ward, Jessica Watson, Catarina Xavier, Daniel Kling, Charla Marshall
This study evaluated the ability to produce FORensic Capture Enrichment (FORCE) genotypes using amplicon-based and capture-based enrichment assays. Fifteen laboratories from three different continents participated in this study, choosing from one of four

End-effector Pose Extrapolation using Wireless Channel State Information

April 21, 2026
Author(s)
Karl Montgomery, Nathan Wei, Jing Geng, Mohamed Hany, Richard Candell
Wireless communications for real-time control is an emerging field. There are many advantages gained by replacing a wired link with wireless; however, wireless brings unique challenges. Applications may need to be designed with wireless communications in

Domain-engineered, aperiodically-poled KTiOPO4 for polarization-entangled photons

April 20, 2026
Author(s)
Paulina Kuo, Sesha Challa, Anouar Rahmouni, Dileep Venkatarama Reddy, Ori Levin, Noa Bloch
We demonstrate a high-quality source of polarization-entangled photons in aperiodically-poled KTiOPO_4 (KTP). The crystal is based on a phase-modulated domain-engineered design that allows two simultaneous downconversion processes, where the two processes

Examining Safe Intervention Windows for 18650 and 21700 Lithium-Ion Batteries under Heat Interruption Experiments

April 20, 2026
Author(s)
Wai Cheong Tam, Hongqiang Fang, Jian Chen, Qiuhong Wang, Christopher Brown, Md. Ismail Siddiqi Emon, Anthony Putorti
This study experimentally quantifies the safe intervention window (the time between the earliest thermal runaway indicator and ignition) for cylindrical lithium-ion batteries exposed to constant external heating. A total of 77 experiments were performed on

Foundational Cybersecurity Activities for IoT Product Manufacturers

April 20, 2026
Author(s)
Michael Fagan, Katerina Megas, Barbara Cuthill, Jeffrey Marron, Brad Hoehn
Internet of Things (IoT) products often lack product cybersecurity capabilities their customers—organizations and individuals—can use to help mitigate their cybersecurity risks. Manufacturers can help their customers by improving the securability of their

GROQ-seq Datasets Across Transcription Factors (LacI, RamR, VanR), T7 RNA Polymerase and TEV Protease

April 19, 2026
Author(s)
Aviv Spinner, Shwetha Sreenivasan, James McLellan, Svetlana Ikonomova, Dana Cortade, Simon d'Oelsnitz, Kristen Sheldon, Olga Vasilyeva, Nina Alperovich, Anjali Chadha, Lily Nematollahi, Andi Dhroso, Zach Sisson, Corey Hudson, Erika DeBenedictis, Peter Kelly, Amanda Reider Apel, David Ross, Catherine Baranowski
Predicting any protein's function from its sequence alone would be a significant breakthrough in molecular biology. Although machine learning approaches have sought to tackle this, their limited generalizability reflects the absence of sufficiently large

Redetermination of the Gravitational Constant with the BIPM torsion balance at NIST

April 16, 2026
Author(s)
Stephan Schlamminger, Leon Chao, Vincent Lee, Craig Shakarji, David Newell, Julian Stirling, Robert Cochrane, Clive Speake
We report the first replication of a high-precision measurement of the gravitational constant, $G$. The experiment employed the torsion balance originally designed and constructed at the International Bureau of Weights and Measures (BIPM) approximately

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

Direct Observation of muonic molecules in resonance states critical to muon catalyzed fusion

April 15, 2026
Author(s)
Yuichi Toyama, Toshiyuki Azuma, Douglas Bennett, William Doriese, Malcolm Durkin, Joseph Fowler, Johnathon Gard, Tadashi Hashimoto, Ryota Hayakawa, Yuto Ichinohe, Katsuhiko Ishida, Sohtaro Kanda, Naritoshi Kawamura, Yasushi Kino, Ren Konishi, Yasuhiro Miyake, Kelsey Morgan, Ryota Nakashima, Hiroaki Natori, Hirofumi Noda, Galen O'Neil, Shinji Okada, Takuma Okumura, Kenichi Okutsu, Carl Reintsema, Kyosuke Sasaki, Toshiki Sato, Daniel Schmidt, Kouichiro Shimomura, Patrick Strasser, Daniel Swetz, Tadayuki Takahashi, Motonobu Tampo, Hideyuki Tatsuno, Joel Ullom, Izumi Umegaki, Shin Watanabe, Shinya Yamada, Takuma Yamashita

Firmware-Based Monitoring for Bus-Based Computer Systems

April 15, 2026
Author(s)
Guru Prasadh Venkataramani, Sanjay Rekhi
This paper describes design mechanisms that reconfigure component firmware as a network of forensic units that passively observe bus traffic to extract and share forensic data beyond typical communication. By employing consensus-building algorithms among

Monte Carlo simulation and unfolding of an extended Bonner sphere system for secondary neutron spectrometry in proton therapy facilities using conventional BSS experimental data

April 12, 2026
Author(s)
Daniel Jardin, Adrian Diaz-Comeche, Sandra Oliver, Belen Juste, Mark Zakhary, Sina Mossahebi, Matthew Mille, Choonsik Lee, Rafael Miro, Gumersindo Verdu, Sergio Morato
The extended-range Bonner Sphere Spectrometer (BSS) is a valuable tool for characterizing neutron fields in radiotherapy, including proton therapy facilities, where secondary neutrons contribute to the incidental dose received by the patient and staff. In

Optical clock frequency ratios with uncertainty ? 3.2 * 10^-18

April 10, 2026
Author(s)
Alexander Aeppli, Willa Arthur-Dworschack, Kyle Beloy, Caitlin Berry, Tobias Bothwell, Angela Folz, Tara Fortier, Tanner Grogan, Youssef Hassan, Zoey Zimeng Hu, David Hume, Benjamin Hunt, Kyungtae Kim, Amanda Koepke, Dahyeon Lee, David Ray Leibrandt, Ben Lewis, Andrew Ludlow, Mason Marshall, Nicholas Nardelli, Harikesh Ranganath, Daniel Rodriguez Castillo, Jeffrey Sherman, Jacob Siegel, Suzanne Thornton, William Warfield, Jun Ye
We report high-precision frequency ratio measurements between optical atomic clocks based on 27Al+, 171Yb, and 87Sr. With total fractional uncertainties at or below 3.2 × 10−18, these measurements meet the milestone criteria for redefinition of the second
Displaying 226 - 250 of 74527
Was this page helpful?