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Metrology

News and Updates

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Powerful NIST Detectors on Hawaiian Telescope to Probe Origins of Stars, Planets and Galaxies

December 6, 2011

The world's largest submillimeter camera—based on superconducting technology designed by the National Institute of Standards and Technology (NIST)—is now ready

Optically pumped GaN nanowire laser shown glowing orange.

Bright Future for GaN Nanowires

November 25, 2011

The gallium nitride nanowires grown by PML scientists may only be a few tenths of a micrometer in diameter, but they promise a very wide range of applications

Adding Up Photons with a TES

November 14, 2011

Scientists have demonstrated that a superconducting detector called a transition edge sensor (TES) is capable of counting the number of as many as 1,000 photons

Redefining the SI Base Units

November 2, 2011

Note: Much more recent information is available about redefinition of the SI units. For a comprehensive general overview, see How to Weigh Everything from

Traveling SIRCUS Tests Satellite Sensors

October 3, 2011

For NASA's Earth Observing System satellite fleet, sensor failure is not an option. The nation depends critically on the data from those satellites, orbiting

PML Develops Graphene Fabrication Capability

October 3, 2011

Graphene – a single-layer planar sheet of carbon atoms bound in a "chicken-wire" lattice—has become the object of intense international research ever since its

Reading Between the Lines in Lithium: New measurements of unprecedented accuracy resolve a longstanding data disagreement problem

October 3, 2011

A team of PML researchers has solved a longstanding problem plaguing experimental tests of the atomic theory of lithium, and in the process uncovered a

NIST Quantum Dot Helps Scientists 'See' Quantum Mechanics at Work

October 3, 2011

A quantum dot made at the National Institute of Standards and Technology (NIST) has helped an international team of researchers "see" the inner workings of

NIST Gets HIP: a New method for testing optical imaging sensors

October 3, 2011

A new type of scene projector in development at PML will enable the performance of future optical and infrared imaging instruments to be evaluated by having

Better 'Photon Loops' May Be Key to Computer and Physics Advances

August 22, 2011

Surprisingly, transmitting information-rich photons thousands of miles through fiber-optic cable is far easier than reliably sending them just a few nanometers

Greenhouse Gases: The Measurement Challenge

August 16, 2011

The continuing increase in the level of carbon dioxide and other "greenhouse gases" in the Earth's atmosphere has been identified as a cause for serious concern

Piece of Cake: Arrays of Long Nanotubes May Help Measure Terahertz Laser Power

July 19, 2011

Terahertz radiation can penetrate numerous materials—plastic, clothing, paper and some biological tissues—making it an attractive candidate for applications

Photo of UC graduate student Matt Kirchner fine-tuning an ultra-stable microwave generator at NIST

A Quiet Phase: NIST Optical Tools Produce Ultra-low-noise Microwave Signals

June 27, 2011

By combining advanced laser technologies in a new way, physicists at the National Institute of Standards and Technology (NIST) have generated microwave signals

National Conference on Weights and Measures Annual Meeting Set for July 17-21, 2011

June 7, 2011

Preventing fraud at oil-change services and enabling consumers to make value comparisons when shopping for printer ink will be among the many issues discussed

Graph shows the NIST detector's linear increase in frequency as a function of time

The Secret Behind NIST's New Gas Detector? Chirp Before Sniffing

May 10, 2011

Trace gas detection, the ability to detect a scant quantity of a particular molecule—a whiff of formaldehyde or a hint of acetone—in a vast sea of others

Sharpened Focus: Improving the Numbers, Utility of Medical Imaging

April 12, 2011

The idea of probing the body's interior with radiation stretches back to experiments with X rays in the 1800s, but more than a century later, images taken with

NIST/JILA Physicist Wins Optical Society's Meggers Award

April 12, 2011

Steven Cundiff, a physicist at the National Institute of Standards and Technology (NIST), has received the 2011 William F. Meggers Award from the Optical

The Heat Is On: NIST Zeroes In On Energy Consumption of Ice Makers

April 12, 2011

In tests of four different types of new refrigerators, National Institute of Standards and Technology (NIST) researchers found that ice makers increased rated

Microreactors: Small Scale Chemistry Could Lead to Big Improvements for Biodegradable Polymers

March 30, 2011

Using a small block of aluminum with a tiny groove carved in it, a team of researchers from the National Institute of Standards and Technology (NIST) and the

NIST physicist Samuel Benz with the two components that are compared in the first electronic measurement of the Boltzmann constant.

A Measurement First: NIST 'Noise Thermometry' System Measures Boltzmann Constant

March 30, 2011

Researchers at the National Institute of Standards and Technology (NIST) have for the first time used an apparatus that relies on the "noise" of jiggling

A photo of fuzzy household cleaners as they're seen through the vision system used in the Perception Challenge

NIST and Willow Garage Launch First Robot 'Perception Challenge'

February 25, 2011

The National Institute of Standards and Technology (NIST) is teaming up with Willow Garage, a Silicon Valley robotics research and design firm, to launch an

New Wave: JILA Develops Efficient Source of Terahertz Radiation

January 19, 2011

JILA researchers have developed a laser-based source of terahertz radiation that is unusually efficient and less prone to damage than similar systems. The

NIST Advances Single Photon Management for Quantum Computers

January 19, 2011

The quantum computers of tomorrow might use photons, or particles of light, to move around the data they need to make calculations, but photons are tricky to

NIST Telescope Calibration May Help Explain Mystery of Universe's Expansion

January 5, 2011

Is the expansion of the universe accelerating for some unknown reason? This is one of the mysteries plaguing astrophysics, and somewhere in distant galaxies are

AFM Positioning: Shining Light on a Needle in a Haystack

November 9, 2010

The researchers characterize their new technique as a neat solution to the "needle in a haystack" problem of nanoscale microscopy, but it's more like the

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