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Physical Measurement Laboratory

Sensor Science Division

News and Updates

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Harmful Algal Blooms in Their True Colors

August 26, 2016

Explosive growth of cyanobacteria, also called blue-green algae, is nothing new. In fact, such cyanobacteria probably produced the original oxygen in Earth's...

An Optical Method of Sorting Nanoparticles by Size

August 17, 2016

NIST scientists have devised and modeled a unique optical method of sorting microscopic and nanoscopic particles by size, with a resolution as fine as 1...

A 3D topographic surface map of the base of a fired 9 mm bullet.

NIST 3D Ballistics Research Database Goes Live

July 7, 2016

It's a staple of the TV-crime drama: a ballistics expert tries to match two bullets using a microscope with a split-screen display. One bullet was recovered...

SF6 Shows Promise as Mercury Substitute

May 27, 2016

Elemental mercury – which is being phased out of commercial thermometers worldwide due to safety concerns – may also be replaced as a temperature reference...

3D Laser Scanner Runoff Pushes New Standard Towards the Finish Line

May 25, 2016

Update: The work that was described in this article led to the publishing of the ASTM E3125-17 standard in December 2017. Large-volume 3D laser scanners play...

Head to Head: Photonic Pressure Sensors vs. Mercury-Based Standard

April 21, 2016

When a team of researchers at NIST's Physical Measurement Laboratory (PML) first tested a new kind of pressure sensor two years ago, initial results showed it...

NIST Could Help Keep Sequestered Carbon From Blowin' in the Wind

April 20, 2016

Capturing carbon dioxide gas and storing it underground is a promising strategy for reducing greenhouse gases in the atmosphere. Scientists at the National...

Improving CD-AFM Measurements from the Tip Down

March 31, 2016

As the sizes of computer chips in electronic devices continue to shrink, traditional measurement tools (e.g., microscopes utilizing visible light) are no longer...

Getting Hyperspectral Imaging Ready for the Rain Forest

February 24, 2016

Hyperspectral images allow humans to see what otherwise might be invisible. Unlike ordinary cameras, which record information in each of three broad color bands...

Vaccine Fridge Field Study 'Opens Doors' to New Standards

February 23, 2016

Recipients of an annual flu shot may be surprised to learn that there is currently no official standard for vaccine storage equipment in clinics, pharmacies...

Better Accuracy Out of Thin (or Thick) Air

February 17, 2016

NIST scientists have devised and improved a prototype instrument the size of a loaf of bread that can substantially increase the accuracy of length measurements...

The complete Primary Mirror Backplane Support Structure for the James Webb Space Telescope. The inset shows the location of the four support mounts of the type that NIST measured.

NIST Performs Critical Measurements for James Webb Space Telescope

February 1, 2016

The National Institute of Standards and Technology (NIST) has accurately measured parts designed for the upcoming James Webb Space Telescope, the long-awaited...

Thinking Outside the Cuvette: To Measure Dimensions of Skinny Glass Container, PML Scientists Get Creative

February 1, 2016

Let's say you're a biotechnologist working to develop new medicines or a better test for forensic analysis. You might find yourself frequently using absorbance...

New 'Quick Test' Station May Speed Commercialization of Photonic Thermometers

January 29, 2016

Physicists in NIST's Physical Measurement Laboratory (PML) have been working on a new class of chip-based photonic thermometers that measure temperature with...

HID Lamps: Getting Brighter Faster

January 6, 2016

NIST has been issued a patent for a novel method to improve the performance and utility of the sort of high-intensity discharge (HID) lamps used for stadium and...

PML Expertise and Collaborations Lead to Portable Test Solution for Laser Trackers

December 28, 2015

A collaboration between NIST researchers and a private-sector firm has led to development of a commercial device to fill a critical need in industry: field...

NIST's Cryogenic Flow Measurement Facility at Boulder, CO

The Once and Future Cryogenic Flow Facility

December 14, 2015

As recently as a few months ago, somebody who needed an internationally recognized calibration for a flow meter that operates with very low-temperature fluids...

Measuring Smokestack Emissions Accurately

November 23, 2015

Society is increasingly concerned about exactly how much carbon dioxide and other pollutants are coming out of smokestacks. But current measurements are clouded...

New Ballistics Control Chart for Forensic Imaging

October 28, 2015

You've probably seen it on TV: To determine whether a single weapon was used in multiple crimes, forensics labs run images of a spent bullet through a database...

Top-of-the-Atmosphere Sunlight — As Seen from Earth

October 22, 2015

It may seem hard to believe, but we still don't know nearly enough about sunlight. Although people have been splitting the sun's rays into a spectrum and...

A New, World-Class Facility for Infrared Calibrations

October 21, 2015

NIST is about to open the world's most accurate facility for calibrating infrared (IR) detectors. It is made possible by the establishment of an extremely...

NIST's Michal Chojnacky with Gates Foundation representative

Gates Foundation Rep Visits PML Vaccine Transport Lab

June 26, 2015

This month, a representative from the Bill and Melinda Gates Foundation visited the vaccine thermometry laboratory of Michal Chojnacky, of NIST PML's...

Hot Off the Lathe: Dimensional Measurements of First Parts of VLOC Pressure Standard

May 28, 2015

Last fall, PML researchers built and tested the first-ever photonic pressure sensor, which makes its measurements using light. This sensor, called the Fixed...

Coming Soon: A Calibration Facility for Micro-Flows

May 27, 2015

Many medical treatments both new and old involve extremely small doses of powerful drugs in liquid form – from scorpion venom for cancer research to opioid...

Under Construction: Traceable Dynamic Pressure Standard

May 19, 2015

In recent years, the physical damage done by pressure waves – such as traumatic brain injuries from explosives sustained by military personnel in the Middle...

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