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Physical Measurement Laboratory

Patents

Searches Patent Title, Abstract, Body, Technology Type, and NIST Inventors
Displaying 76 - 100 of 139

Optomechanical Pressure Measurement System And Method Using The Vibrational Modes Of A Membrane

NIST Inventors
Stephen Eckel , James A. Fedchak , Thomas Purdy and Robinjeet Singh
An optomechanical pressure-measurement system measures pressure in the range of 10.sup.−6 Pa-10.sup.−2 Pa by measuring various properties of a vibrational mode of an ultra-thin membrane member. With independent measurements of the thickness and density of the membrane, in addition to the measured

Quantum Flow Cytometer

NIST Inventors
Sergey Polyakov and Ivan Burenkov
Flow cytometry is arguably the most powerful optical method routinely used in the diagnosis of health disorders and disease monitoring. We enhance an optical flow cytometer with a photon­ number statistics measurement. Our technique allows for an absolute measurement of biomarker concentration and
Slide showing text explaining the benefits of the technology described in patent 10,720,993

Metasurface Optical Pulse Shaper for Shaping an Optical Pulse in a Temporal Domain

NIST Inventors
Henri Lezec and Wenqi Zhu
A metasurface optical pulse shaper includes a metasurface with superpixels disposed on an entry side of the metasurface and a wire grid polarizer disposed on an exit surface of the metasurface for controlling a phase, amplitude, or polarization of an optical pulse, wherein the metasurface in

Molecular Scrivener For Reading Or Writing Data To A Macromolecule

NIST Inventors
Joseph Robertson and Kin (Charles) Cheung
A molecular scrivener reads data from or writes data to a macromolecule and includes: a pair of shielding electrodes; a scrivener electrode between the first and second shielding electrodes and that electrically floats at a third potential that, in an absence of a charged or dipolar moiety of the

Micromechanical Vibrasolator

NIST Inventors
Jason J. Gorman
Micromechanical resonators are devices that vibrate at specified resonance frequencies and are used for timing, sensing, and signal processing. The most important performance metric for micromechanical resonators is the quality factor, which determines how quickly energy is dissipated in the

Process For Making Alkali Metal Vapor Cells

NIST Inventors
John Kitching
Making alkali metal vapor cells includes: providing a preform wafer that includes cell cavities in a cavity layer; providing a sealing wafer having a cover layer and transmission apertures; disposing a deposition assembly on the sealing wafer; disposing an alkali metal precursor in the deposition
A list of radiation-induced materials modifications that are NIST traceable

Photonic Dosimeter and Process for Performing Dosimetry

NIST Inventors
Ronald Tosh , Zeeshan Ahmed , Ryan P. Fitzgerald and Nikolai Klimov
A photonic dosimeter accrues cumulative dose and includes: a substrate; a waveguide disposed on the substrate and that: receives a primary input light; transmits secondary input light from the primary input light to a dosimatrix; receives a secondary output light from the dosimatrix; and produces

Optical Reference Cavity

NIST Inventors
Franklyn Quinlan , Scott Diddams and Andrew Ludlow
An optical reference cavity includes: a cell that includes: a cylindrical body; end faces; an optical canal having an interior cylindrical geometry; and an exterior surface having an exterior cylindrical geometry; mirrors disposed on the end faces; an aspect ratio that is less than 1; a compression

Thermoelectric Devices Based On Nanophononic Metamaterials

NIST Inventors
Kris A. Bertness and Joel Weber
A nanophononic metamaterial-based thermoelectric energy conversion device and processes for fabricating a nanophononic metamaterial-based thermoelectric energy conversion device is provided. In one implementation, for example, a nanophononic metamaterial-based thermoelectric energy conversion device

Methods And Apparatus For Generating Mid-Infrared Frequency Combs

NIST Inventors
Scott Diddams , Scott Papp , Abijith Kowligy and Alexander Lind
Apparatus and methods for generating mid-IR frequency combs using intra-pulse DFG. A mode-locked pulse generation laser generates near-IR pulses which are amplified. The amplified pulses are spectrally broadened by a nonlinear element, for example a normal dispersion highly nonlinear fiber (ND-HNLF)
A timeline of long distance communication techniques

Communication Linker for Communication Linking

NIST Inventors
Sergey Polyakov and Ivan Burenkov
A communication linker includes: a classical encoder; an optical transmitter; a receiver; a local oscillator in communication with the receiver and that: receives a feedback signal; and produces a displacement frequency, based on the feedback signal; a single photon detector in communication with

Optical Phantom for Producing a Time-Resolved Diffuse Reflectance Spectrum

NIST Inventors
Jeeseong C. Hwang
An optical phantom produces a time-resolved diffuse reflectance spectrum and includes: a light source; a spatial light modulator; and an optical delay line including optical fibers of different length that produce different time-of-flight distributions, such that different time-of-flight

Liquid Crystal Thermometer for MRI

NIST Inventors
Elizabeth Mirowski , Michael Snow and Kathryn Keenan
Cost effective and quality assurance friendly magnetic resonance imaging thermometer using non-encapsulated liquid c1ystals to be incorporated in standard reference objects for magnetic resonance imaging.

Non-Resonant Electron Spin Resonant Probe And Associated Hardware

NIST Inventors
Jason Campbell , Jason Ryan , Kin (Charles) Cheung , Robert Gougelet and Pragya Shrestha
This invention details a non-resonant probe designed to measure changes in the density of broken bonds (unpaired electrons) in materials exposed to ionizing radiation. The probe functions to excite and detect electron spin resonance transitions in these materials. Accumulated radiation dose can then
Line drawing of the thermal impedance amplifier

Thermal Impedance Amplifier

NIST Inventors
Adam McCaughan , Varun Verma and Sonia Buckley
A thermal impedance amplifier includes: a resistive layer including: a resistance member; a first electrode in electrical communication with the resistance member; and a second electrode in electrical communication with the resistance member; a switch layer opposing the resistive layer and including
X-Ray Spectrometer

X-Ray Spectrometer

NIST Inventors
Kevin L. Silverman , Carl D. Reintsema , Galen O'Neil , Luis Miaja Avila , Daniel Swetz , W.Bertrand (Randy) Doriese , Dan Schmidt , Bradley Alpert , Joseph Fowler , Joel Ullom , Ralph Jimenez and Gene C. Hilton
This invention includes: an x-ray plasma source that produces primary x-rays; an x-ray optic that transmits and focuses the primary x-ray onto a sample jet from which fluorescence x-ray are emitted; and a microcalorimeter array detector that measures the energy of the incoming fluorescence x-rays
This image of a chart titled "How does it work" that describes the optomechanical reference.

Optomechanical Reference

NIST Inventors
Gordon A. Shaw and Jacob Taylor
An optomechanical reference includes a basal member; a flexure that includes: a floating link; a first flexural member; and a second flexural member such that: the floating link is moveably disposed; a first stator; a second stator; a first cavity including: a first primary mirror; a first secondary

Neuromimetic Circuit

NIST Inventors
Jeff Shainline and Sonia Buckley
Optoelectronic neural networks comprise a system of interconnected processing units (neurons) interconnected by integrated photonic waveguides. The processing units receive photonic signals from other units. Each unit sums the received signals on a waveguide-integrated photon detector, and when the
Step-by-step process for making a self-aligned waveguide

Process for Making a Self-Aligned Waveguide

Coplanar waveguides (CPWs) with a continuous, self-aligned gap between the center trace and the ground plane are described with the additional functionality that a bridge between the two grounds is left as a crossover. The width of the gap can be made in the 100's of nm range using optical
Powerpoint slide, showing via map and photograhpy, the distance from NIST Boulder to Valmont Butte

Optical Time Distributor and Process for Optical Two-Way Time-Frequency Transfer

NIST Inventors
Laura Sinclair , William C. Swann and JD Deschenes
An optical time distributor includes: a master clock including: a master comb; a transfer comb; and a free-space optical terminal; and a remote clock in optical communication with the master clock via a free space link and including: a remote comb that produces: a remote clock coherent optical pulse
The figure shows a microfabricated optical probe with the following components: 110 - optical loop, 111 – structured region of 110, 114 – optical waveguide, 116 – first arm of optical waveguide, 120 – substrate, 122 – optical cladding layer, 124 – first single mode optical fiber, 126 – primary light, and 128 – output light.

Microfabricated Optical Probe

NIST Inventors
Vladimir Aksyuk and Kartik Srinivasan
Integrated photonics research and manufacturing requires a probe for in-line nondestructive optical testing of devices. Current optical probes require dedicated and large coupling areas in the photonic circuit, cannot provide sufficient control over the degree, location and direction of optical