公开(公告)号：US20220134331A1

公开(公告)日：2022-05-05

申请号：US17513942

申请日：2021-10-29

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Mandy Brigitte Esch

IPC: B01L3/00 ,  G01N33/50

Abstract: A gravity flow micro-physiological article determines a physiological response to a drug and includes: supply chambers; a mixing chamber; and a liquid divider, wherein the divider divides fluid under gravitational force so that individual portions of the fluid independently include metabolites in a proportionate amount as physically determined by the liquid divider.

公开(公告)号：US11258415B2

公开(公告)日：2022-02-22

申请号：US15841701

申请日：2017-12-14

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Jeffrey Shainline ,  Sae Woo Nam ,  Sonia Buckley

IPC: H03F19/00 ,  G06N3/04 ,  G06F1/08 ,  G06N3/067 ,  G06N3/08 ,  G06N3/063

Abstract: A neuromimetic circuit includes: a primary single photon optoelectronic neuron; a synapse in optical communication with the primary single photon optoelectronic neuron; and an axonic waveguide in optical communication with the primary single photon optoelectronic neuron and the synapse such that the axonic waveguide optically interconnects the primary single photon optoelectronic neuron and the synapse.

公开(公告)号：US11255746B2

公开(公告)日：2022-02-22

申请号：US17113222

申请日：2020-12-07

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Zeeshan Ahmed

IPC: G01M11/00 ,  G02B1/00 ,  G01K11/32 ,  H01P7/00 ,  G02B6/293

Abstract: A photonic resonator analyzer characterizes a photonic resonator and incudes a light source that provides a probe light; a photonic resonator that receives the probe light and produces product light; an optical detector that receives the product light and produces a product signal; a mode analyzer that receives the product signal and produces a resonator spectrum; and a spectral analyzer that receives the resonator spectrum, performs regression by fitting a non-parametric model to the resonator spectrum, and produces a thermal response function of the photonic resonator from fitting the non-parametric model to the resonator spectrum to characterize the photonic resonator.

公开(公告)号：US20220026192A1

公开(公告)日：2022-01-27

申请号：US17209285

申请日：2021-03-23

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Laura Cathleen Sinclair ,  Nathan Reynolds Newbury ,  William Charles Swann ,  Jean-Daniel Deschenes

IPC: G01B9/02

Abstract: A synchronizer for synchronizing transfer over an optical link includes a frequency reference oscillator; a tracking optical timing source; a tracking comb signal; a signal processor-controller; a comb timing discriminator; a clock frequency comb; a bidirectional terminal; a time-frequency offset measurement system; and a second comb timing discriminator.

公开(公告)号：US11221540B2

公开(公告)日：2022-01-11

申请号：US17023732

申请日：2020-09-17

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Kartik Arvind Srinivasan ,  Xiyuan Lu

IPC: G02F1/39 ,  G02F1/35

Abstract: An optical parametric oscillator for producing idler coherent light and signal coherent light from pump coherent light by balanced parametric dispersion includes: substrate cladding; a microring resonator disposed on the substrate cladding and including: a broadly transparent Kerr nonlinear medium including a annulus with a radius R, a height H, and a width W that provides a balanced parametric dispersion; and that: receives pump coherent light from a waveguide; and produces idler coherent light and signal coherent light from the pump coherent light, the idler coherent light and signal coherent light produced according to the balanced parametric dispersion of the microring resonator; and the waveguide disposed on the substrate cladding in optical communication with the microring resonator and comprising a broadly transparent medium such as silicon nitride and that: receives pump coherent light; and communicates the pump coherent light to the microring resonator for production of the idler coherent light and the signal coherent light from the pump coherent light.

公开(公告)号：US11209314B2

公开(公告)日：2021-12-28

申请号：US17126118

申请日：2020-12-18

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Adam Joseph Fleisher ,  Keith Alan Gillis ,  Joseph Terence Hodges

IPC: G01N21/00 ,  G01J3/433 ,  G01J3/12 ,  G01J3/10 ,  G01J3/02

Abstract: A cavity buildup dispersion spectrometer includes a shutter that modulates coherent electromagnetic radiation at a shutter frequency; and produces modulated electromagnetic radiation; a frequency shifter that frequency shifts the modulated electromagnetic radiation to a shifter frequency and produces frequency shifted radiation; a resonator that produces cavity radiation from the frequency shifted radiation and the coherent electromagnetic radiation, receives an analyte; subjects the analyte to cavity radiation, and transmits the cavity radiation as transmitted electromagnetic radiation; and a receiver that: produces a detector signal from the transmitted electromagnetic radiation, such that the detector signal includes a beat frequency that corresponds to a change in a motion of resonator that includes a change in the distance between the mirrors or a change of refractive index of the analyte in the intracavity space.

公开(公告)号：US11187571B2

公开(公告)日：2021-11-30

申请号：US16706011

申请日：2019-12-06

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Leon Shih Chao ,  Jon Robert Pratt

IPC: G01G7/02 ,  G01G1/18 ,  G01G23/10 ,  G01G23/01

Abstract: An absolute mass balance determines an absolute mass of an object and includes: a dual diameter wheel including: a balance fulcrum; and a balance beam disposed on the balance fulcrum and including: a main mass arm and a counter mass arm; a main mass receiver that receives the object; a main magnet system including: a first main coil that produces a first magnetic field; a second main coil that produces a second magnetic field; and a permanent magnet that produces a third magnetic field that interacts with the first magnetic field and the second magnetic field; a displacement measuring system that provides a null position of the dual diameter wheel and measures a velocity of the main magnet system; and a driving motor including: an eddy current damper that provides a constant velocity of the main mass receiver; and a counter mass magnet system.

公开(公告)号：US11180844B2

公开(公告)日：2021-11-23

申请号：US16357650

申请日：2019-03-19

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： John Kitching

IPC: C23C14/04 ,  C23C14/28 ,  B23K1/20 ,  B23K1/00 ,  C23C14/18

Abstract: 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 assembly; disposing the sealing wafer on the preform wafer; aligning the transmission apertures with the cell cavities; subjecting the alkali metal precursor to a reaction stimulus; producing alkali metal vapor in the deposition assembly; communicating the alkali metal vapor to the cell cavities; receiving, in the cell cavities, the alkali metal vapor from the transmission apertures; producing an alkali metal condensate in the cell cavity; moving the sealing wafer such that the cover layer encapsulates the alkali metal condensate in the cell cavities; and bonding the sealing wafer to the preform wafer to make individually sealed alkali metal vapor cells in the preform wafer.

公开(公告)号：US11165505B2

公开(公告)日：2021-11-02

申请号：US17173476

申请日：2021-02-11

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： Joshua Ari Gordon ,  Christopher Lee Holloway

IPC: H04B10/532 ,  H04B10/70 ,  H04B10/50

Abstract: A quantum atomic receiving antenna includes: a probe laser; a coupling laser; an atomic vapor cell that includes: a spherically-shaped or parallelepiped-shaped atomic vapor space and Rydberg antenna atoms that undergo a radiofrequency Rydberg transition to produce quantum antenna light from probe light such that an intensity of the quantum antenna light depends on an amount of radiofrequency radiation received by the Rydberg antenna atoms, the quantum antenna light including a strength, direction and polarization of the radiofrequency radiation; and a quantum antenna light detector in optical communication with the atomic vapor cell.

公开(公告)号：US20210262798A1

公开(公告)日：2021-08-26

申请号：US17177895

申请日：2021-02-17

Applicant: Government of the United States of America, as represented by the Secretary of Commerce

Inventor： John Edward Kitching ,  Elizabeth Ann Donley ,  Azure Lynn Hansen ,  Yun-Jhih Chen

IPC: G01C19/62 ,  G01B9/02 ,  G01P15/093 ,  G21K1/12 ,  G21K1/06 ,  G01C19/64

Abstract: An inertial point-source matter-wave atom interferometer gyroscope includes an analyzer that receives fringe images of gyroscope atoms and includes: a first fringe image that includes a first fringe phase, a second fringe image that includes a second fringe phase; and a third fringe image that includes a third fringe phase, wherein the first fringe phase, the second fringe phase, and the third fringe phase are different; a phase mapper of the analyzer that produces a interferometric phase map for the gyroscope atoms from the fringe images of the gyroscope atoms; and a fitter of the analyzer in communication with the phase mapper and that receives the interferometric phase map from the analyzer and determines inertial parameters of the gyroscope atoms from the interferometric phase map, the inertial parameters including an acceleration and a rotation rate of the inertial point-source matter-wave atom interferometer gyroscope relative to the gyroscope atoms.