NIST Tech Beat | September 2023

NIST Tech Beat | September 2023

Four small dark glass ampules stand on a lab table, marked with skull and crossbones danger icons.

NIST Researchers Develop Standards to Help Eliminate ‘Forever Chemicals’ in Firefighting Foams

New reference materials containing PFAS will help the military and other organizations identify and phase out foams that contain these chemicals, which have raised environmental and health concerns. Read more about the PFAS reference materials.


Three images demonstrate types of presentation attacks: a person in heavy appearance-altering makeup, a person holding up a printed photo of another person, and a hand holding up a phone image of another person.

What’s Wrong With This Picture? NIST Face Analysis Program Helps to Find Answers

Two NIST evaluation studies will help software better detect photo spoofs and image quality issues. Read more about the face analysis studies.


Pieces of salmon are being fed from a metal holder into the icy opening of a milling machine.

NIST’s Shrimp and Salmon Reference Materials Could Help Combat Seafood Fraud

NIST researchers developed reference materials for salmon and shrimp, two of the most-consumed seafoods in the U.S., to help regulators differentiate between farm-raised and wild-caught types. Read more about the seafood reference materials.




Illustration of a pair of tweezers surrounding a beam of light that illuminates a line of atoms, each with an analog clock face in the center and an up and down arrow pointing through it.

New Spin-Squeezing Techniques Let Atoms Work Together for Better Quantum Measurements

Opening new possibilities for quantum sensors, atomic clocks and tests of fundamental physics, JILA researchers have developed new ways of “entangling” or interlinking the properties of large numbers of particles. Read more about the spin-squeezing techniques.


A medical worker wears gloves as she prepares to swab the nose of a female patient.

Measuring the Accuracy of PCR Tests Can Improve Health Care Beyond COVID-19

Researchers at NIST have developed a new mathematical model to characterize the likelihood of a test result being incorrect. Learn more about the PCR test research.


Kandice Taylor, in safety glasses, laughs as she pours liquids into a glass flask that is overflowing with foam.

I’m Helping My Garden Vegetables — and My Students — Bloom Where They Are Planted

Middle school is the perfect time to plant the seed for a child to grow a lifelong love of science. Read more from one teacher about how NIST supports her work.


Illustration shows a tree with a T-shaped coring tool, an atom, and a tree cross section with rings and reads: Age of a Tree

How Do You Measure the Age of a Tree?

Getting the answer, it turns out, is not trivial. In fact, it spawned an entire field of science: dendrochronology. Read more about how we measure a tree's age.



Improving Water Quality at Home

NIST researcher Alshae’ Logan-Jackson studied water temperature and water use in a laboratory house on NIST’s campus in Gaithersburg, Maryland. Learn more about the connections between these factors and dangerous bacteria in our new video on YouTube.

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