Patents by Inventor Ya-Hong Xie
Ya-Hong Xie 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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Patent number: 11680907Abstract: Systems and methods for characterizing biological specimens, which may involve identifying a cell type or state corresponding to a disease or health condition of a subject. A biological specimen is subjected to electromagnetic radiation for spectroscopic analysis such as Surface Enhanced Raman Spectroscopy (SERS) to determine the relative abundance of proteins or amino acids in the cells, which is used in a comparison to previously stored relative abundance data of a database to automatically identifies at least one of cell type and/or cell state of the cells (or the disease/health state of the subject with the disease state including the possibility of virus infection, or drug susceptibility of a subject to bacteria or fungus). The method may also be employed with biological entities or cellular structures such as exosomes and even protein or nucleic acid fragments to determine disease states or health states of the subject.Type: GrantFiled: August 26, 2022Date of Patent: June 20, 2023Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Ya-Hong Xie, Owen Liang
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Publication number: 20220412892Abstract: Systems and methods for characterizing biological specimens, which may involve identifying a cell type or state corresponding to a disease or health condition of a subject. A biological specimen is subjected to electromagnetic radiation for spectroscopic analysis such as Surface Enhanced Raman Spectroscopy (SERS) to determine the relative abundance of proteins or amino acids in the cells, which is used in a comparison to previously stored relative abundance data of a database to automatically identifies at least one of cell type and/or cell state of the cells (or the disease/health state of the subject with the disease state including the possibility of virus infection, or drug susceptibility of a subject to bacteria or fungus). The method may also be employed with biological entities or cellular structures such as exosomes and even protein or nucleic acid fragments to determine disease states or health states of the subject.Type: ApplicationFiled: August 26, 2022Publication date: December 29, 2022Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Ya-Hong Xie, Owen Liang
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Patent number: 11428638Abstract: Systems and methods for characterizing biological specimens, which may involve identifying a cell type or state corresponding to a disease or health condition of a subject. A biological specimen is subjected to electromagnetic radiation for spectroscopic analysis such as Surface Enhanced Raman Spectroscopy (SERS) to determine the relative abundance of proteins or amino acids in the cells, which is used in a comparison to previously stored relative abundance data of a database to automatically identifies at least one of cell type and/or cell state of the cells (or the disease/health state of the subject with the disease state including the possibility of virus infection, or drug susceptibility of a subject to bacteria or fungus). The method may also be employed with biological entities or cellular structures such as exosomes and even protein or nucleic acid fragments to determine disease states or health states of the subject.Type: GrantFiled: January 11, 2019Date of Patent: August 30, 2022Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Ya-Hong Xie, Owen Liang
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Publication number: 20210372933Abstract: Systems and methods for characterizing biological specimens, which may involve identifying a cell type or state corresponding to a disease or health condition of a subject. A biological specimen is subjected to electromagnetic radiation for spectroscopic analysis such as Surface Enhanced Raman Spectroscopy (SERS) to determine the relative abundance of proteins or amino acids in the cells, which is used in a comparison to previously stored relative abundance data of a database to automatically identifies at least one of cell type and/or cell state of the cells (or the disease/health state of the subject with the disease state including the possibility of virus infection, or drug susceptibility of a subject to bacteria or fungus). The method may also be employed with biological entities or cellular structures such as exosomes and even protein or nucleic acid fragments to determine disease states or health states of the subject.Type: ApplicationFiled: January 11, 2019Publication date: December 2, 2021Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Ya-Hong Xie, Owen Liang
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Patent number: 10001442Abstract: An optical probe includes an optical fiber with a first end and a second end, and an enhanced surface on a portion of the first end of the optical fiber. The enhanced surface includes a patterned base layer including multiple protruding nano-pyramids, an intermediate layer over the patterned base layer, and a graphene layer over the intermediate layer. Using a layer of graphene to cover the enhanced surface increases the sensitivity of a surface-enhanced Raman spectroscopy (SERS) process performed in conjunction with the enhanced surface, and further increases the chemical stability and bio-compatibility of the enhanced surface. Further, placing the enhanced surface at the end of the optical fiber provides a self-contained probe for use with a SERS process, thereby allowing for in-vivo characterization of a sample.Type: GrantFiled: June 13, 2014Date of Patent: June 19, 2018Assignee: The Regents of the University of CaliforniaInventors: Ya-Hong Xie, Pu Wang
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Publication number: 20160023144Abstract: Water purification system comprising filtration media sized with respect to each other to allow a first contaminant in the water to saturate the first medium with a delay prior to saturation of the second medium with a second contaminant.Type: ApplicationFiled: March 2, 2015Publication date: January 28, 2016Applicant: The Water Initiative, LLC,Inventors: Eugene A. FITZGERALD, Ya-Hong XIE, Thomas LANGDO, Richard RENJILIAN, Carl V. THOMPSON, III
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Patent number: 9206058Abstract: Water purification system comprising filtration media sized with respect to each other to allow a first contaminant in the water to saturate the first medium with a delay prior to saturation of the second medium with a second contaminant.Type: GrantFiled: August 22, 2011Date of Patent: December 8, 2015Assignee: THE WATER INITATIVE, LLCInventors: Eugene A. Fitzgerald, Ya-Hong Xie, Thomas Langdo, Richard Renjilian, Carl V. Thompson
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Publication number: 20150166382Abstract: Water purification system comprising filtration media sized with respect to each other to allow a first contaminant in the water to saturate the first medium with a delay prior to saturation of the second medium with a second contaminant.Type: ApplicationFiled: July 18, 2014Publication date: June 18, 2015Applicant: The Water Initiative, LLCInventors: Eugene A. Fitzgerald, Ya-Hong Xie, Thomas Langdo, Richard Renjilian, Carl V. Thompson
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Publication number: 20140368817Abstract: An optical probe includes an optical fiber with a first end and a second end, and an enhanced surface on a portion of the first end of the optical fiber. The enhanced surface includes a patterned base layer including multiple protruding nano-pyramids, an intermediate layer over the patterned base layer, and a graphene layer over the intermediate layer. Using a layer of graphene to cover the enhanced surface increases the sensitivity of a surface-enhanced Raman spectroscopy (SERS) process performed in conjunction with the enhanced surface, and further increases the chemical stability and bio-compatibility of the enhanced surface. Further, placing the enhanced surface at the end of the optical fiber provides a self-contained probe for use with a SERS process, thereby allowing for in-vivo characterization of a sample.Type: ApplicationFiled: June 13, 2014Publication date: December 18, 2014Inventors: Ya-Hong Xie, Pu Wang
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Spin injection device having semiconductor-ferromagnetic-semiconductor structure and spin transistor
Patent number: 8233315Abstract: A spin injection device and spin transistor including a spin injection device. A spin injection device includes different semiconductor materials and a spin-polarizing ferromagnetic material there between. The semiconductor materials may have different crystalline structures, e.g., a first material can be polycrystalline or amorphous silicon, and a second material can be single crystalline silicon. Charge carriers are spin-polarized when the traverse the spin-polarizing ferromagnetic material and injected into the second semiconductor material. A Schottky barrier height between the first semiconductor and ferromagnetic materials is larger than a second Schottky barrier height between the ferromagnetic and second semiconductor materials. A spin injection device may be a source of a spin field effect transistor.Type: GrantFiled: January 13, 2012Date of Patent: July 31, 2012Assignee: The Regents of the University of CaliforniaInventor: Ya-Hong Xie -
Publication number: 20120125203Abstract: Water purification system comprising filtration media sized with respect to each other to allow a first contaminant in the water to saturate the first medium with a delay prior to saturation of the second medium with a second contaminant.Type: ApplicationFiled: August 22, 2011Publication date: May 24, 2012Applicant: THE WATER INITIATIVE, LLCInventors: Eugene A. Fitzgerald, Ya-Hong Xie, Thomas Langdo, Richard Renjilian, Carl V. Thompson
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SPIN INJECTION DEVICE HAVING SEMICONDUCTOR-FERROMAGNETIC-SEMICONDUCTOR STRUCTURE AND SPIN TRANSISTOR
Publication number: 20120112189Abstract: A spin injection device and spin transistor including a spin injection device. A spin injection device includes different semiconductor materials and a spin-polarizing ferromagnetic material there between. The semiconductor materials may have different crystalline structures, e.g., a first material can be polycrystalline or amorphous silicon, and a second material can be single crystalline silicon. Charge carriers are spin-polarized when the traverse the spin-polarizing ferromagnetic material and injected into the second semiconductor material. A Schottky barrier height between the first semiconductor and ferromagnetic materials is larger than a second Schottky barrier height between the ferromagnetic and second semiconductor materials. A spin injection device may be a source of a spin field effect transistor.Type: ApplicationFiled: January 13, 2012Publication date: May 10, 2012Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventor: Ya-Hong Xie -
Patent number: 8101984Abstract: A spin injector for use in a microelectronic device such as a field effect transistor (FET) is disclosed. The spin injector includes an array of ferromagnetic elements disposed within a semiconductor. The ferromagnetic elements within the array are arranged and spaced with respect to one another in a close arrangement such that electrons or holes are spin-polarized when passing through. The spin injector may be located above or at least partially within a source region of the FET. A spin injector structure may also be located above or at least partially within the drain region of the FET. The spin injector includes a semiconductor material containing an array of ferromagnetic elements disposed in the semiconductor material, wherein adjacent ferromagnetic elements within the array are separated by a distance within the range between about 1 nm and 100 nm.Type: GrantFiled: June 22, 2007Date of Patent: January 24, 2012Assignee: The Regents of the University of CaliforniaInventor: Ya-Hong Xie
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Spin injection device having semiconductor-ferromagnetic-semiconductor structure and spin transistor
Patent number: 8098515Abstract: A spin injection device and spin transistor including a spin injection device. A spin injection device includes different semiconductor materials and a spin-polarizing ferromagnetic material there between. The semiconductor materials may have different crystalline structures, e.g., a first material can be polycrystalline or amorphous silicon, and a second material can be single crystalline silicon. Charge carriers are spin-polarized when the traverse the spin-polarizing ferromagnetic material and injected into the second semiconductor material. A Schottky barrier height between the first semiconductor and ferromagnetic materials is larger than a second Schottky barrier height between the ferromagnetic and second semiconductor materials. A spin injection device may be a source of a spin field effect transistor.Type: GrantFiled: June 29, 2007Date of Patent: January 17, 2012Assignee: The Regents of the University of CaliforniaInventor: Ya-Hong Xie -
Patent number: 7935956Abstract: A device having an optically active region includes a silicon substrate and a SiGe cladding layer epitaxially grown on the silicon substrate. The SiGe cladding layer includes a plurality of arrays of quantum dots separated by at least one SiGe spacing layer, the quantum dots being formed from a compound semiconductor material.Type: GrantFiled: November 1, 2007Date of Patent: May 3, 2011Assignee: The Regents of the University of CaliforniaInventor: Ya-Hong Xie
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Patent number: 7875953Abstract: An integrated circuit laminate with a metal substrate for use with high performance mixed signal integrated circuit applications. The metal substrate provides substantially improved crosstalk isolation, enhanced heat sinking and an easy access to a true low impedance ground. In one embodiment, the metal layer has regions with insulation filled channels or voids and a layer of insulator such as unoxidized porous silicon disposed between the metal substrate and a silicon integrated circuit layer. The laminate also has a plurality of metal walls or trenches mounted to the metal substrate and transacting the silicon and insulation layers thereby isolating noise sensitive elements from noise producing elements on the chip. In another embodiment, the laminate is mounted to a flexible base to limit the flexion of the chip.Type: GrantFiled: July 7, 2008Date of Patent: January 25, 2011Assignee: The Regents of the University of CaliforniaInventor: Ya-Hong Xie
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Patent number: 7779883Abstract: A device for forming a self-assembled film on a substrate containing a film precursor includes a first heating member and a second heating member disposed adjacent to the first heating member, the second heating member being separated from the first heating member by a gap. The device includes a movable pusher member configured for advancing the substrate from the first heating member to the second heating member.Type: GrantFiled: August 30, 2006Date of Patent: August 24, 2010Assignee: The Regents of the University of CaliforniaInventor: Ya-Hong Xie
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Patent number: 7772117Abstract: Methods of fabricating highly conductive regions in semiconductor substrates for radio frequency applications are used to fabricate two structures: (1) a first structure includes porous Si (silicon) regions extending throughout the thickness of an Si substrate that allows for the subsequent formation of metallized posts and metallized moats in the porous regions; and (2) a second structure includes staggered deep V-grooves or trenches etched into an Si substrate, or some other semiconductor substrate, from the front and/or the back of the substrate, wherein these V-grooves and trenches are filled or coated with metal to form the metallized moats.Type: GrantFiled: January 23, 2007Date of Patent: August 10, 2010Assignee: The Regents of the University of CaliforniaInventors: King-Ning Tu, Ya-Hong Xie, Chang-Ching Yeh
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Patent number: 7754008Abstract: A method of forming a stressed thin film on a substrate includes forming a plurality of islands on a viscous layer that is present on a surface of a substrate. Adjacent islands are bridged with a stressor layer. The structure is annealed at an elevated temperature above the glass flow temperature of the viscous layer to transfer at least a portion of the stress from the stressor layer to the underlying islands. The bridges are then removed to expose the stressed islands of thin film on the substrate.Type: GrantFiled: July 19, 2006Date of Patent: July 13, 2010Assignee: The Regents of the University of CaliforniaInventors: Ya-Hong Xie, Jeehwan Kim
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Patent number: 7732237Abstract: A method of forming an optically active region on a silicon substrate includes the steps of epitaxially growing a silicon buffer layer on the silicon substrate and epitaxially growing a SiGe cladding layer having a plurality of arrays of quantum dots disposed therein, the quantum dots being formed from a compound semiconductor material having a lattice mismatch with the silicon buffer layer. The optically active region may be incorporated into devices such as light emitting diodes, laser diodes, and photodetectors.Type: GrantFiled: June 27, 2005Date of Patent: June 8, 2010Assignee: The Regents of the University of CaliforniaInventor: Ya-Hong Xie