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Physical Measurement Laboratory

Patents

Search Patent Title, Abstract, Body, Keyword or Inventors
Displaying 26 - 37 of 37
Image of devices on a table

Optical Parametric Oscillator

NIST Inventors
John T. Woodward IV, and
Patent Description This invention is a light source that provides high-power (1W to 5W), narrow line-width (<1 nm), quasi-continuous wave (80 MHz) light that can be tuned in wavelength from 340 nm to 2300 nm. See figure below. The light source is fully automated, solid state, and fits on a
Image of an map view with the text "Natural gas extraction east of Platteville Colorado. DCS could monitor over 100 sites from central location. Overlapping fields could ensure complete coverage".

Hub and Spoke System for Detecting and Locating Gas Leaks

NIST Inventors
Greg Rieker, Ian Coddington, Nathan R Newbury, Kuldeep Prasad and Anna Karion
Patent Description The current practice for detecting methane leaks is still in its infancy. There are several environmental regulations that have driven the development of Forward-looking Infrared (FLIR) cameras, thermographic cameras that senses infrared radiation, for detection of Volatile
A flat pink device with a round black patch lies over a quarter.

Electrical-Substitution Radiometer

NIST Inventors
John H. Lehman and Nathan A Tomlin
This invention is an electrical-substitution radiometer (ESR) — a thermal detector for optical and infrared radiation — based on a novel configuration of arrays of vertically aligned carbon nanotubes.
A line drawing showing the entire structure, which includes the resonator and supporting substrate.

Reticulated Resonator, Process for Making and Use of Same

NIST Inventors
Raymond Simmonds, Katarina Cicak, Cindy Regal and Thomas Purdy
Patent Description Mechanical resonators are widely used in wireless receivers, bio sensors, and timing and frequency control. Besides industry, in recent years in academia there is also considerable interest for ultrahigh precision sensing and fundamental science. A mechanical resonator with the
Image of diagrams for the Classic Mach - Zehnder interferometer, Microwae transmission line based vserion, and guided wave probe tip interacts with sample

Phase Shift Detector Process for Making and Use of Same

NIST Inventors
Kin (Charles) Cheung, Jason Ryan and Jason Campbell
Patent Description The new NIST detector senses very small phase shifts in a highly balanced microwave bridge. An electric field optimized microwave probe, in close proximity to a sample, serves to perturb the degree of bridge balance due to a change in effective dielectric constant of the sample
Image of 2 security officers inspecting packages

Authentication Article and Process for Making Same

NIST Inventors
Yaw S. Obeng and Joseph J. Kopanski
Patent Description This invention provides for a new and useful metrology to enable counterfeit detection system capable of uniquely marking items by encoding information in their physical structure at the nanoscale. The system depends on rapidly encoding information in the physical structure of an
A metal cube (RPPM) mounted on a metal surface has round holes cut in each side.

Optical Power Meter

NIST Inventors
John H. Lehman and Paul A. Williams
NIST scientists have devised a radically new method of determining laser power by measuring the radiation pressure exerted by a laser beam on a reflective surface.
Diagram shows ethanol, shields, vapor cell, reservoir, heater.

Detection of J-Coupling Using Atomic Magnetometer

NIST Inventors
John Kitching
NMR endures as one of the most powerful analytical tools for detecting chemical species and elucidating molecular structure. Zero-to-ultralow-field NMR spectroscopy is a new, potentially portable and cost-effective modality to determine the molecular structure and properties of microfluidic chemical samples.
Schematic of magnetometer/gyroscope shows layers with photodetectors on top and laser at bottom.

Compact Atomic Magnetometer and Gyroscope

NIST Inventors
John Kitching and Elizabeth Donley
Gyroscopes sense rotation. In combination with magnetometers, gyroscopes are used many applications. The NIST invention enables multitasking measurement capabilities and is the first to demonstrate simultaneous measurement of rotation, rotation angle and acceleration with a single source of atoms.
Fiber magnetometer

Chip-Scale Atomic Magnetometer

NIST Inventors
John Kitching and Vladislav Gerginov
Measurement of faint magnetic fields is critical to many applications, including medical diagnostics, but conventional technologies are often large, complex and expensive. NIST’s chip-scale atomic magnetometer is highly compact and readily fabricated using familiar semiconductor techniques.