Patents by Inventor Changhe Huang
Changhe Huang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240133739Abstract: Apparatuses, systems, and methods for Raman spectroscopy are described. In certain implementations, a spectrometer is provided. The spectrometer may include a plurality of optical elements, comprising an entrance aperture, a collimating element, a volume phase holographic grating, a focusing element, and a detector array. The plurality of optical elements are configured to transfer the light beam from the entrance aperture to the detector array with a high transfer efficiency over a preselected spectral band.Type: ApplicationFiled: May 17, 2023Publication date: April 25, 2024Applicant: Wayne State UniversityInventors: Gregory William Auner, Michelle Ann Brusatori, Changhe Huang
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Publication number: 20240060899Abstract: Apparatuses, systems, and methods for analyzing a sample are provided. In some embodiments, a system includes a test assembly that comprises: a sample analyzer configured to provide data related to the sample; and a processing unit configured to analyze the data provided by the sample analyzer. The system is configured to identify at least one target in the sample.Type: ApplicationFiled: January 5, 2022Publication date: February 22, 2024Inventors: Ehsan MAJIDI, Changhe HUANG, Gregory William AUNER
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Patent number: 11698304Abstract: Apparatuses, systems, and methods for Raman spectroscopy are described. In certain implementations, a spectrometer is provided. The spectrometer may include a plurality of optical elements, comprising an entrance aperture, a collimating element, a volume phase holographic grating, a focusing element, and a detector array. The plurality of optical elements are configured to transfer the light beam from the entrance aperture to the detector array with a high transfer efficiency over a preselected spectral band.Type: GrantFiled: June 25, 2019Date of Patent: July 11, 2023Assignee: Wayne State UniversityInventors: Gregory William Auner, Michelle Ann Brusatori, Changhe Huang
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Patent number: 11192104Abstract: A cartridge includes a substrate including a polymerase chain reaction (PCR) zone. The PCR zone includes a first heating region, a second heating region spaced away from the first heating region and a detection region. A microchannel is formed in the substrate. The microchannel receives a fluid flowing therethrough, the microchannel passing through the first heating region and second heating region to thermally cycle the fluid. The microchannel passes through the detection region after the fluid has been thermally cycled.Type: GrantFiled: November 9, 2018Date of Patent: December 7, 2021Assignee: Visca, LLCInventors: Gregory W. Auner, Michelle A. Brusatori, Changhe Huang
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Publication number: 20210187502Abstract: A cartridge includes a substrate including a polymerase chain reaction (PCR) zone. The PCR zone includes a first heating region, a second heating region spaced away from the first heating region and a detection region. A microchannel is formed in the substrate. The microchannel receives a fluid flowing therethrough, the microchannel passing through the first heating region and second heating region to thermally cycle the fluid. The microchannel passes through the detection region after the fluid has been thermally cycled.Type: ApplicationFiled: December 14, 2020Publication date: June 24, 2021Inventors: Gregory W. AUNER, Michelle A. Brusatori, Changhe HUANG
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Patent number: 10921161Abstract: A differential angle sensor for measuring a differential angle between an input shaft and an output shaft includes a target assembly fixed to rotate with one of the shafts and a ring magnet with equidistantly spaced magnet segments fixed to rotate with the other one of the shafts. The target assembly includes four identical targets extending about the common axis parallel and axially spaced apart from one another, and each having a plurality of wedge-shaped teeth extending radially toward the ring magnet. A first magnetic field sensor is disposed between first and second targets for measuring a first magnetic field strength therebetween. A second magnetic field sensor is disposed between third and fourth targets for measuring a second magnetic field strength. The targets are all circumferentially offset relative to one another such that the magnetic field strengths each vary with the differential angle between the shafts and differently from one-another.Type: GrantFiled: December 4, 2018Date of Patent: February 16, 2021Assignee: CHINA AUTOMOTIVE SYSTEMS, INC.Inventors: Haimian Cai, Siqi Cheng, Changhe Huang, Thaddeus Schroeder, Christopher Mark Thrush
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Publication number: 20200261909Abstract: A cartridge includes a substrate including a polymerase chain reaction (PCR) zone. The PCR zone includes a first heating region, a second heating region spaced away from the first heating region and a detection region. A microchannel is formed in the substrate. The microchannel receives a fluid flowing therethrough, the microchannel passing through the first heating region and second heating region to thermally cycle the fluid. The microchannel passes through the detection region after the fluid has been thermally cycled.Type: ApplicationFiled: November 9, 2018Publication date: August 20, 2020Inventors: Gregory W. AUNER, Michelle A. Brusatori, Changhe HUANG
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Publication number: 20200264050Abstract: Apparatuses, systems, and methods for Raman spectroscopy are described. In certain implementations, a spectrometer is provided. The spectrometer may include a plurality of optical elements, comprising an entrance aperture, a collimating element, a volume phase holographic grating, a focusing element, and a detector array. The plurality of optical elements are configured to transfer the light beam from the entrance aperture to the detector array with a high transfer efficiency over a preselected spectral band.Type: ApplicationFiled: June 25, 2019Publication date: August 20, 2020Applicant: Wayne State UniversityInventors: Gregory William Auner, Michelle Ann Brusatori, Changhe Huang
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Patent number: 10718637Abstract: A torque and angular sensor includes a differential angle sensor to precisely measure a differential angle between an input shaft and an output shaft and an angular position sensor to measure the angle of at least one of the shafts over a full angular range. The differential angle sensor measures an output rotation angle of an output target and an input rotation angle of an input target using changing voltages in taps on the input and output coils, which each carry an AC excitation current and which are each inductively coupled with teeth on targets fixed to rotate with one of the shafts. Input shaft rotation angle region is combined with the input angular position as a rotation angle composite. A raw torque angle is determined based on the difference between the input and output rotation angles. Rotational and Linear compensation provides a high-precision torque angle.Type: GrantFiled: August 21, 2018Date of Patent: July 21, 2020Assignee: CHINA AUTOMOTIVE SYSTEMS, INC.Inventors: Haimian Cai, Siqi Cheng, Changhe Huang, Thaddeus Schroeder, Christopher Mark Thrush
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Publication number: 20200173813Abstract: A differential angle sensor for measuring a differential angle between an input shaft and an output shaft includes a target assembly fixed to rotate with one of the shafts and a ring magnet with equidistantly spaced magnet segments fixed to rotate with the other one of the shafts. The target assembly includes four identical targets extending about the common axis parallel and axially spaced apart from one another, and each having a plurality of wedge-shaped teeth extending radially toward the ring magnet. A first magnetic field sensor is disposed between first and second targets for measuring a first magnetic field strength therebetween. A second magnetic field sensor is disposed between third and fourth targets for measuring a second magnetic field strength. The targets are all circumferentially offset relative to one another such that the magnetic field strengths each vary with the differential angle between the shafts and differently from one-another.Type: ApplicationFiled: December 4, 2018Publication date: June 4, 2020Inventors: Haimian Cai, Siqi Cheng, Changhe Huang, Thaddeus Schroeder, Christopher Mark Thrush
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Publication number: 20180372513Abstract: A torque and angular sensor includes a differential angle sensor to precisely measure a differential angle between an input shaft and an output shaft and an angular position sensor to measure the angle of at least one of the shafts over a full angular range. The differential angle sensor measures an output rotation angle of an output target and an input rotation angle of an input target using changing voltages in taps on the input and output coils, which each carry an AC excitation current and which are each inductively coupled with teeth on targets fixed to rotate with one of the shafts. Input shaft rotation angle region is combined with the input angular position as a rotation angle composite. A raw torque angle is determined based on the difference between the input and output rotation angles. Rotational and Linear compensation provides a high-precision torque angle.Type: ApplicationFiled: August 21, 2018Publication date: December 27, 2018Inventors: Haimian Cai, Siqi Cheng, Changhe Huang, Thaddeus Schroeder, Christopher Mark Thrush
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Patent number: 9778105Abstract: An apparatus for performing Raman spectral analysis of a sample is described, comprising a coherent light source, an first optical chain to direct the coherent light to impinge on the sample, a second optical chain to direct the scattered light onto a diffraction grating, and a third optical chain to direct the diffracted light onto detection array. The diffraction grating is a stairstep with a metalized surface, and a plurality of metalized stripes on a flat surface is disposed in a direction orthogonal to the long dimension of the stairsteps. The region between the flat surface and the stairstep is transparent. The zeroth-order fringe is selected by a slit and directed onto camera. The resultant interferogram is Fourier transformed to produce a representation of the Raman spectrum.Type: GrantFiled: October 20, 2014Date of Patent: October 3, 2017Assignee: WAYNE STATE UNIVERSITYInventors: Gregory W. Auner, Changhe Huang, Christopher M. Thrush, Michelle Brusatori
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Patent number: 9207122Abstract: An apparatus for performing Raman spectral analysis of a sample is described, comprising a coherent light source, an first optical chain to direct the coherent light to impinge on the sample, a second optical chain to direct the scattered light onto a diffraction grating, and a third optical chain to direct the diffracted light onto detection array. The diffraction grating is a plurality of alternating-slope stairsteps, wherein the portion of the step disposed parallel to the base of the diffraction grating is disposed so as to be orthogonal to the path of the scattered light from the second optical chain. The zeroth-order fringe is selected by a slit and directed onto camera. The resultant interferogram is Fourier transformed to produce a representation of the Raman spectrum.Type: GrantFiled: January 31, 2013Date of Patent: December 8, 2015Assignee: WAYNE STATE UNIVERSITYInventors: Gregory Auner, Changhe Huang, Christopher M. Thrush, Michelle A. Brusatori
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Publication number: 20150085284Abstract: An apparatus for performing Raman spectral analysis of a sample is described, comprising a coherent light source, an first optical chain to direct the coherent light to impinge on the sample, a second optical chain to direct the scattered light onto a diffraction grating, and a third optical chain to direct the diffracted light onto detection array. The diffraction grating is a stairstep with a metalized surface, and a plurality of metalized stripes on a flat surface is disposed in a direction orthogonal to the long dimension of the stairsteps. The region between the flat surface and the stairstep is transparent. The zeroth-order fringe is selected by a slit and directed onto camera. The resultant interferogram is Fourier transformed to produce a representation of the Raman spectrum.Type: ApplicationFiled: October 20, 2014Publication date: March 26, 2015Inventors: Gregory W. Auner, Changhe Huang, Christopher M. Thrush, Michelle Brusatori
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Publication number: 20150029504Abstract: An apparatus for performing Raman spectral analysis of a sample is described, comprising a coherent light source, an first optical chain to direct the coherent light to impinge on the sample, a second optical chain to direct the scattered light onto a diffraction grating, and a third optical chain to direct the diffracted light onto detection array. The diffraction grating is a plurality of alternating-slope stairsteps, wherein the portion of the step disposed parallel to the base of the diffraction grating is disposed so as to be orthogonal to the path of the scattered light from the second optical chain. The zeroth-order fringe is selected by a slit and directed onto camera. The resultant interferogram is Fourier transformed to produce a representation of the Raman spectrum.Type: ApplicationFiled: January 31, 2013Publication date: January 29, 2015Applicant: WAYNE STATE UNIVERSITYInventors: Gregory Auner, Changhe Huang, Christopher M. Thrush, Michelle A. Brusatori