Patents by Inventor Chia-Fu Chou
Chia-Fu Chou 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: 11955397Abstract: A semiconductor structure is provided. The semiconductor structure includes a substrate, a channel layer, a barrier layer, a compound semiconductor layer, a gate electrode, and a stack of dielectric layers. The channel layer is disposed on the substrate. The barrier layer is disposed on the channel layer. The compound semiconductor layer is disposed on the barrier layer. The gate electrode is disposed on the compound semiconductor layer. The stack of dielectric layers is disposed on the gate electrode. The stack of dielectric layers includes layers having different etching rates.Type: GrantFiled: November 9, 2020Date of Patent: April 9, 2024Assignee: Vanguard International Semiconductor CorporationInventors: Shin-Cheng Lin, Cheng-Wei Chou, Ting-En Hsieh, Yi-Han Huang, Kwang-Ming Lin, Yung-Fong Lin, Cheng-Tao Chou, Chi-Fu Lee, Chia-Lin Chen, Shu-Wen Chang
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Patent number: 11932973Abstract: A method for manufacturing a polymer-based fibrous scaffold is disclosed. The method includes the following step: providing an electrospinning device comprising a collector; and injecting a polymer solution into the electrospinning device to produce a single jet fiber, wherein the single jet fiber is piled on the collector to form a fibrous scaffold.Type: GrantFiled: October 27, 2021Date of Patent: March 19, 2024Assignee: ACADEMIA SINICAInventors: Chia-Fu Chou, Balchandar Navaneethan
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Patent number: 11859237Abstract: A method for sizing a DNA molecule is disclosed, which comprises the following steps of: providing a DNA sizing device, comprising: a cover substrate; a substrate disposed on the cover substrate and comprising a first hole and a second hole; and a first slit-like channel disposed between the cover substrate and the substrate, wherein two ends of the first slit-like channel respectively connects to the first hole and the second hole; loading a sample comprising a DNA molecule to the first slit-like channel through the first hole, wherein the DNA molecule moves in a direction from the first hole to the second hole; detecting and recording an intensity and an area of a distribution of the DNA molecule; and analyzing the intensity and the area to obtain the size of a DNA molecule.Type: GrantFiled: November 8, 2019Date of Patent: January 2, 2024Assignee: ACADEMIA SINICAInventors: Chia-Fu Chou, Jia-Wei Yeh, Yii-Lih Lin
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Publication number: 20220136145Abstract: A method for manufacturing a polymer-based fibrous scaffold is disclosed. The method includes the following step: providing an electrospinning device comprising a collector; and injecting a polymer solution into the electrospinning device to produce a single jet fiber, wherein the single jet fiber is piled on the collector to form a fibrous scaffold.Type: ApplicationFiled: October 27, 2021Publication date: May 5, 2022Inventors: Chia-Fu CHOU, Balchandar NAVANEETHAN
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Publication number: 20220099673Abstract: A biosensor is provided, which comprises: a substrate; a working electrode disposed on the substrate and comprising a graphene layer; a counter electrode disposed on the substrate and adjacent to the working electrode; a reference electrode disposed on the substrate and adjacent to the working electrode; and a bio-recognition layer disposed on the working electrode. In addition, a bio-sensing system comprising the aforesaid biosensor and a method for preparing the aforesaid biosensor are also provided.Type: ApplicationFiled: September 27, 2021Publication date: March 31, 2022Inventors: Chia-Fu CHOU, Stalin KARUPPIAH
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Publication number: 20200149088Abstract: A method for sizing a DNA molecule is disclosed, which comprises the following steps of: providing a DNA sizing device, comprising: a cover substrate; a substrate disposed on the cover substrate and comprising a first hole and a second hole; and a first slit-like channel disposed between the cover substrate and the substrate, wherein two ends of the first slit-like channel respectively connects to the first hole and the second hole; loading a sample comprising a DNA molecule to the first slit-like channel through the first hole, wherein the DNA molecule moves in a direction from the first hole to the second hole; detecting and recording an intensity and an area of a distribution of the DNA molecule; and analyzing the intensity and the area to obtain the size of a DNA molecule.Type: ApplicationFiled: November 8, 2019Publication date: May 14, 2020Inventors: Chia-Fu CHOU, Jia-Wei YEH, Yii-Lih LIN
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Patent number: 9958396Abstract: A sensing device applied to an analyte molecule of a liquid sample and a buffer flow has at least one first inlet, at least one second inlet, a micro-flow channel, and at least one immobilization element. The first inlet is for inputting the liquid sample. The second inlet is for inputting the buffer flow. The micro-flow channel communicates with the first inlet and the second inlet. The immobilization element is for immobilizing sensing molecules for the analyte molecules. The analyte sample flow and the buffer flow, in the reverse direction, in the micro-flow channel enable the association and disassociation kinetics to be obtained. The present invention further provides a sensing system and a sensing method using the sensing device.Type: GrantFiled: May 27, 2015Date of Patent: May 1, 2018Assignees: Academia Sinica, Centre National De La Recherche ScientifiqueInventors: Chia-Fu Chou, Thierry Leichle, Yii-Lih Lin, Pattamon Teerapanich
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Patent number: 9915614Abstract: Methods, systems, and devices are disclosed for molecular capture, manipulation, and analysis. In one aspect, a device to aggregate and characterize particles in a fluid includes an electrically insulative substrate including a channel to carry an electrically conducting fluid containing particles, electrodes located in the channel forming a nanoscale opening and including an insulating layer over their surface at the opening, a first circuit to apply a non-uniform ac electric field and a dc bias signal across the electrodes, in which the applied non-uniform ac electric field produces a positive dielectrophoretic force to aggregate the particles in a trapping region including the opening and adjacent region, a second circuit to detect changes in a dc current caused by at least some of the particles in the trapping region, and an optical device that directs a coherent light beam on the opening to determine Raman spectra of the particles in the trapping region.Type: GrantFiled: April 26, 2013Date of Patent: March 13, 2018Assignees: ACADEMIA SINICA, MAX-PLANCK-INSTITUT FUR EISENFORSCHUNG GMBHInventors: Chia-Fu Chou, Lesser-Rojas Leonardo, Ming-Lee Chu, Andreas Erbe
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Patent number: 9555412Abstract: A device for optical mapping of protein binding sites, in particular, transcription factor binding sites, on single DNA molecules, includes an insulating substrate having two parallel channels and at least one slit connecting the two channels, a coverslip on the substrate, at least two reservoirs on the substrate connecting the channels of the insulating substrate, and at least two electrodes in the reservoirs. When the reservoirs are filled with a buffer solution, the electrodes are in electrical contact in the buffer solution.Type: GrantFiled: October 8, 2013Date of Patent: January 31, 2017Assignee: ACADEMIA SINICAInventors: Chia-Fu Chou, K. K. Sriram
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Patent number: 9387488Abstract: Methods, structures, devices and systems are disclosed for rapid enrichment and mass transport of biomolecules (e.g., such as proteins) or other small molecules and particles using electrodeless dielectrophoresis (eDEP). In one aspect, a device to aggregate molecules includes a substrate that is electrically insulating, an electrically insulative material formed on the substrate and structured to form a channel to carry an electrically conducting fluid containing particles, a constriction structure formed of the electrically insulative material and located in the channel to narrow a channel dimension and forming an opening with a size in the nanometer range, and a circuit coupled to the substrate to apply an ac electric field and a dc bias electric field along the channel, in which the constriction structure is structured to magnify the applied ac electric field to produce forces that operate collectively to aggregate the particles.Type: GrantFiled: November 13, 2012Date of Patent: July 12, 2016Assignee: ACADEMIA SINICAInventors: Chia-Fu Chou, Kuo-Tang Liao
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Publication number: 20150346104Abstract: A sensing device applied to an analyte molecule of a liquid sample and a buffer flow has at least one first inlet, at least one second inlet, a micro-flow channel, and at least one immobilization element. The first inlet is for inputting the liquid sample. The second inlet is for inputting the buffer flow. The micro-flow channel communicates with the first inlet and the second inlet. The immobilization element is for immobilizing sensing molecules for the analyte molecules. The analyte sample flow and the buffer flow, in the reverse direction, in the micro-flow channel enable the association and disassociation kinetics to be obtained. The present invention further provides a sensing system and a sensing method using the sensing device.Type: ApplicationFiled: May 27, 2015Publication date: December 3, 2015Inventors: Chia-Fu CHOU, Thierry LEICHLE, Yii-Lih LIN, Pattamon TEERAPANICH
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Publication number: 20140320849Abstract: Methods, systems, and devices are disclosed for molecular capture, manipulation, and analysis. In one aspect, a device to aggregate and characterize particles in a fluid includes an electrically insulative substrate including a channel to carry an electrically conducting fluid containing particles, electrodes located in the channel forming a nanoscale opening and including an insulating layer over their surface at the opening, a first circuit to apply a non-uniform ac electric field and a dc bias signal across the electrodes, in which the applied non-uniform ac electric field produces a positive dielectrophoretic force to aggregate the particles in a trapping region including the opening and adjacent region, a second circuit to detect changes in a dc current caused by at least some of the particles in the trapping region, and an optical device that directs a coherent light beam on the opening to determine Raman spectra of the particles in the trapping region.Type: ApplicationFiled: April 26, 2013Publication date: October 30, 2014Applicants: MAX-PLANCK-INSTITUT FÜR EISENFORSCHUNG GMBH, ACADEMIA SINICAInventors: Chia-Fu Chou, Lesser-Rojas Leonardo, Ming-Li Chu, Andreas Erbe
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Publication number: 20140131204Abstract: Methods, structures, devices and systems are disclosed for rapid enrichment and mass transport of biomolecules (e.g., such as proteins) or other small molecules and particles using electrodeless dielectrophoresis (eDEP). In one aspect, a device to aggregate molecules includes a substrate that is electrically insulating, an electrically insulative material formed on the substrate and structured to form a channel to carry an electrically conducting fluid containing particles, a constriction structure formed of the electrically insulative material and located in the channel to narrow a channel dimension and forming an opening with a size in the nanometer range, and a circuit coupled to the substrate to apply an ac electric field and a dc bias electric field along the channel, in which the constriction structure is structured to magnify the applied ac electric field to produce forces that operate collectively to aggregate the particles.Type: ApplicationFiled: November 13, 2012Publication date: May 15, 2014Applicant: ACADEMIA SINICAInventors: Chia-Fu Chou, Kuo-Tang Liao
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Publication number: 20140120522Abstract: A device for optical mapping of protein binding sites, in particular, transcription factor binding sites, on single DNA molecules, includes an insulating substrate having two parallel channels and at least one slit connecting the two channels, a coverslip on the substrate, at least two reservoirs on the substrate connecting the channels of the insulating substrate, and at least two electrodes in the reservoirs. When the reservoirs are filled with a buffer solution, the electrodes are in electrical contact in the buffer solution.Type: ApplicationFiled: October 8, 2013Publication date: May 1, 2014Applicant: Academia SinicaInventors: Chia-Fu Chou, K.K. Sriram
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Patent number: 6989235Abstract: An exemplary system and method of employing DNA hybridization for the detection of bio-agents is disclosed as comprising inter alia a biomolecular rotary motor (150); a capture probe DNA fragment (140) effectively attached to said biomolecular motor (150); a target DNA fragment (130) suitably adapted for hybridization with said capture probe DNA (140); a signal probe DNA fragment (120) suitably adapted for hybridization with said target DNA (130); and a fluorescent bead (100) attached to said signal probe DNA (120). Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve certain device fabrication parameters and/or performance metrics.Type: GrantFiled: February 11, 2003Date of Patent: January 24, 2006Assignee: Motorola, Inc.Inventors: Lars Chapsky, Wayne D. Frasch, Chia Fu Chou, Frederic Zenhausern, Herbert Goronkin
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Patent number: 6986601Abstract: A method for mixing at least two fluids includes introducing the at least two fluids into a mixing chamber. The mixing chamber includes a piezoelectric component (500) for mechanical actuation of fluid motion within or adjacent the mixing chamber. The piezoelectric component includes at least first (400), second (410), third (420), and fourth (430) actuation domains, the first and third actuation domains being on first and third opposed sides of the piezoelectric component, and the second and fourth actuation domains being on second and fourth opposed sides of the piezoelectric component. The first and third domains are actuated at a first phase of a frequency of oscillation, and the second and fourth domains are actuated at a second phase of the frequency of oscillation.Type: GrantFiled: May 13, 2003Date of Patent: January 17, 2006Assignee: Motorola, Inc.Inventors: Daniel J. Sadler, Rajnish G. Changrani, Chia Fu Chou, Frederic Zenhausern
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Patent number: 6858436Abstract: An exemplary system and method for detecting at least one analyte in a sample comprises inter alia a source of radiation (300), a near-field aperture array (315), a chromatographic field (330), a detector (350), and a data processor (370). Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve detection of any sub-diffraction-limited scale phenomena. Exemplary embodiments of the present invention representatively provide for improved S/N, increased sample throughput, refined spectral resolution and enhanced detection sensitivity.Type: GrantFiled: April 30, 2002Date of Patent: February 22, 2005Assignee: Motorola, Inc.Inventors: Frederic Zenhausern, Chia-Fu Chou
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Patent number: 6824664Abstract: The present invention further provides a device for the integrated micromanipulation, amplification, and analysis of polarized particles such as DNA comprises a microchip which contains constrictions of insulating material for dielectrophoresis powered by an alternating current or direct current signal generator, and attached to a hot source that can be heated to specific temperatures. Nucleic acids can be heated and cooled to allow for denaturation, and the annealing of complementary primers and enzymatic reactions, as in a thermocycling reaction. After such a reaction has been completed at the constriction, the dielectrophoretic field can be switched to a direct field to release the product and direct it through a matrix for fractionation. The device includes data analysis equipment for the control of these operations, and imaging equipment for the analysis of the products.Type: GrantFiled: November 6, 2000Date of Patent: November 30, 2004Assignee: Princeton UniversityInventors: Robert H. Austin, Jonas O. Tegenfeldt, Edward C. Cox, Chia Fu Chou, Olgica Bakajin
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Publication number: 20040228206Abstract: An exemplary system and method for providing substantially uniform mixing of fluid phases, wherein the frequency of operation, flow velocities and/or device dimensions generally correspond to otherwise substantially diffusion limited applications, is disclosed as comprising inter alia: a mixing chamber; a plurality of electrodes (150) for generating an electric field; an electromagnet (200) for generating a magnetic field; and a controller for oscillating the electric field and the magnetic field in order to produce a periodic frequency-difference phase cycling of the electric and magnetic fields. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve mixing operation in any diffusion limited application.Type: ApplicationFiled: May 13, 2003Publication date: November 18, 2004Inventors: Daniel J. Sadler, Rajnish G. Changrani, Chia Fu Chou, Frederic Zenhausern
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Publication number: 20040228205Abstract: An exemplary system and method for providing substantially uniform mixing of fluid phases, wherein the frequency of operation, flow velocities and/or device dimensions generally correspond to otherwise substantially diffusion limited applications, is disclosed as comprising inter alia: a mixing chamber; a plurality of electrodes (150) for generating an electric field; an electromagnet (200) for generating a magnetic field; and a controller for oscillating the electric field and the magnetic field in order to produce a periodic frequency-difference phase cycling of the electric and magnetic fields. Disclosed features and specifications may be variously controlled, adapted or otherwise optionally modified to improve mixing operation in any diffusion limited application.Type: ApplicationFiled: May 13, 2003Publication date: November 18, 2004Inventors: Daniel J. Sadler, Rajnish G. Changrani, Chia Fu Chou, Frederic Zenhausern