Patents by Inventor Alex Yuandong GU

Alex Yuandong GU 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).

  • Publication number: 20210063658
    Abstract: Various embodiments may relate to an optical device. The device may include an elongate substrate, an emitter portion at a distal end portion of the elongate substrate, the emitter portion configured to emit light, and an actuator portion at a proximal end portion of the elongate substrate opposite the distal end portion of the elongate substrate. The emitter portion may include a first electrode, a second electrode, and an active layer between the first electrode and the second electrode so that the light is emitted due to an increase in a temperature of the active layer upon application of a first potential difference between the first electrode and the second electrode. The active layer may be patterned to form a photonic crystal layer for enhancing directionality of the emitted light.
    Type: Application
    Filed: January 16, 2019
    Publication date: March 4, 2021
    Inventors: Lennon Yao Ting Lee, Lionel You Liang Wong, Alex Yuandong Gu
  • Publication number: 20200278289
    Abstract: Various embodiments may relate a chemical sensor. The chemical sensor may include a substrate including a first sealed (or isolated) cavity and a second sealed (or isolated) cavity separate from the first sealed (or isolated) cavity. The chemical sensor may also include an emitter in the first sealed (or isolated) cavity, the emitter configured to emit infrared light. The chemical sensor may further include a detector in the second sealed (or isolated) cavity. The chemical sensor may also include a waveguide configured to carry the infrared light from the emitter to the detector. The waveguide may include a sensing portion configured such that a property of the infrared light carried through the sensing portion changes in response to a chemical entity in contact with the sensing portion. The detector may be configured to detect the change in the property (of the infrared light).
    Type: Application
    Filed: October 8, 2018
    Publication date: September 3, 2020
    Inventors: Hong Cai, Jifang Tao, Lennon Yao Ting Lee, Alex Yuandong Gu
  • Publication number: 20200173780
    Abstract: Various embodiments may provide a gyroscope. The gyroscope may include a piezoelectric substrate, an excitation transducer configured to generate a surface acoustic wave, and a sensing transducer configured to receive the surface acoustic wave generated by the excitation transducer. The gyroscope may additionally include a mass dot array between the excitation transducer and the sensing transducer, the mass dot array configured to generate a stress on the piezoelectric substrate based on a rotation of said gyroscope upon the surface acoustic wave passing through the mass dot array. The gyroscope may also include a light source, and an optical detector configured to receive one or more light beams generated by the light source to determine the rotation of the gyroscope based on a property of the one or more light beams. The property of the one or more light beams may be variable based on the stress on the piezoelectric substrate.
    Type: Application
    Filed: August 16, 2018
    Publication date: June 4, 2020
    Inventors: Guoqiang Wu, Jifang Tao, Alex Yuandong Gu, Geng Li Chua
  • Patent number: 10578438
    Abstract: Various embodiments may provide an optical gyroscope. The optical gyroscope may include a ring resonator, an input source configured to generate or provide a first light beam and a second light beam to the ring resonator, and a switching pathway having an input end and an output end coupled to the ring resonator, and may include a plurality of switches. The optical gyroscope may include a control circuit configured to control the plurality of switches to allow the first light beam to propagate from the input end to the output end along the switching pathway during a first time interval, and allow the second light beam to propagate from the input end to the output end along the switching pathway during a second time interval. The optical gyroscope may additionally include a detector loop configured to receive the first light beam and the second light beam from the ring resonator.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: March 3, 2020
    Assignee: Agency for Science, Technology and Research
    Inventors: Guoqiang Wu, Jifang Tao, Alex Yuandong Gu, Junfeng Song
  • Patent number: 10215692
    Abstract: There is provided an optical waveguide structure, including a substrate, an insulating layer disposed on the substrate whereby the insulating layer includes an air slot formed therein, a first material layer suspended over the air slot whereby the first material layer constitutes a waveguide core of the optical waveguide structure, and a second material layer disposed over the waveguide core whereby the waveguide core is suspended over the air slot by the second material layer. There is also provided an optical gas sensor incorporating the optical waveguide structure and methods of fabrication thereof.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: February 26, 2019
    Assignee: Agency for Science, Technology and Research
    Inventors: Jifang Tao, Hong Cai, Alex Yuandong Gu, Hyun Kee Chang
  • Publication number: 20190049249
    Abstract: Various embodiments may provide an optical gyroscope. The optical gyroscope may include a ring resonator, an input source configured to generate or provide a first light beam and a second light beam to the ring resonator, and a switching pathway having an input end and an output end coupled to the ring resonator, and may include a plurality of switches. The optical gyroscope may include a control circuit configured to control the plurality of switches to allow the first light beam to propagate from the input end to the output end along the switching pathway during a first time interval, and allow the second light beam to propagate from the input end to the output end along the switching pathway during a second time interval. The optical gyroscope may additionally include a detector loop configured to receive the first light beam and the second light beam from the ring resonator.
    Type: Application
    Filed: January 24, 2017
    Publication date: February 14, 2019
    Inventors: Guoqiang Wu, Jifang Tao, Alex Yuandong Gu, Junfeng Song
  • Publication number: 20190033075
    Abstract: According to various embodiments, there is provided a gyroscope device including: an outer frame; and four cells arranged within the outer frame, each cell of the four cells including: a proof mass arranged at least substantially in a centre region of the cell; and four electrode frames, each electrode frame of the four electrode frames arranged at a corner region of the cell and coupled to a respective side of the proof mass.
    Type: Application
    Filed: January 24, 2017
    Publication date: January 31, 2019
    Inventors: Guoqiang Wu, Sanchitha Nirodha Fernando, Alex Yuandong Gu, Geng Li Chua
  • Publication number: 20180368914
    Abstract: A device for vascular denervation comprising a catheter for insertion into a vessel, at least one elongated catheter arm having alternating regions of flexible joints and rigid blocks along the at least one catheter arm, wherein each of the at least one catheter arm comprises at least one tactile sensor and at least one temperature sensor; at least one electrode and electrical circuitry disposed on each of the at least one catheter arm and at least one linkage connected to all of the elongated catheter arms. A method for batch fabricating a plurality of catheter arms for the vascular denervation device is also provided and comprises the steps of depositing a first polymer coating on a semiconductor substrate, forming metal traces on the first polymer coating, patterning and etching the substrate to the first polymer coating to create flexible joint regions.
    Type: Application
    Filed: December 15, 2016
    Publication date: December 27, 2018
    Inventors: Ming-Yuan CHENG, Songsong ZHANG, Alex Yuandong GU, Andrew Benson RANDLES, Ee Lim TAN, Pushpapraj SINGH, Kwan Ling TAN, Weiguo CHEN, Ruiqi LIM, Ramona DAMALERIO, Surasit CHUNGPAIBOONPATANA
  • Patent number: 10076772
    Abstract: A transducer is provided, which includes a substrate, wherein a cavity is defined at least partially through the substrate, at least one stopper structure arranged within the cavity, a support layer arranged over the at least one stopper structure and the cavity to seal the cavity, and a piezoelectric functional arrangement arranged on the support layer. According to further embodiments of the present invention, a method for forming a transducer is also provided.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: September 18, 2018
    Assignee: Agency for Science, Technology and Research
    Inventors: Jinghui Xu, Hongbin Yu, Liang Lou, Alex Yuandong Gu
  • Patent number: 10033305
    Abstract: According to embodiments of the present invention, an energy harvesting device is provided. The energy harvesting device includes a plurality of energy harvesting elements, each energy harvesting element including a transducer, and at least one spring arranged in between at least two energy harvesting elements of the plurality of energy harvesting elements to mechanically couple the at least two energy harvesting elements to each other. According to further embodiments of the present invention, a method for forming an energy harvesting device is also provided.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: July 24, 2018
    Assignee: Agency for Science, Technology and Research
    Inventors: Chengliang Sun, Xiaojing Mu, Ilker Ender Ocak, Alex Yuandong Gu
  • Patent number: 9829358
    Abstract: In various embodiments, a device for determining a property of a fluid may be provided. The device may include a fluid receiving structure configured to receive the fluid having a first condition. The device may further include a flow control structure coupled to the fluid receiving structure. The flow control structure may be configured to change the first condition of the fluid to a second condition. The device may further include a determination mechanism configured to determine the property of the fluid based on the second condition. The device may also include a voltage generation mechanism a voltage generation mechanism configured to generate a voltage based on the second condition.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: November 28, 2017
    Assignee: Agency for Science, Technology and Research
    Inventors: Xiaojing Mu, Chengliang Sun, Alex Yuandong Gu
  • Publication number: 20170328793
    Abstract: A sensing device comprising a first array of electrodes encapsulated in a first elastomeric layer; a second array of electrodes encapsulated in a second elastomeric layer; a third elastomeric layer intermediate the first and second elastomeric layer and comprising an array of micro-structures, wherein said electrodes and elastomeric layers are configured such that a displacement of said micro-structures, in response to one or more forces and/or pressures applied to said device, causes a capacitance of said device to vary as a function of said forces and/or pressure applied.
    Type: Application
    Filed: November 19, 2015
    Publication date: November 16, 2017
    Applicants: SINGAPORE HEALTH SERVICES PTE LTD, AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, ALEXANDRA HEALTH PTE LTD
    Inventors: HWAN ING HEE, TAO SUN, NING XUE, ALEX YUANDONG GU, HONGBIN YU, YVONNE WONG
  • Publication number: 20170227456
    Abstract: There is provided an optical waveguide structure, including a substrate, an insulating layer disposed on the substrate whereby the insulating layer includes an air slot formed therein, a first material layer suspended over the air slot whereby the first material layer constitutes a waveguide core of the optical waveguide structure, and a second material layer disposed over the waveguide core whereby the waveguide core is suspended over the air slot by the second material layer. There is also provided an optical gas sensor incorporating the optical waveguide structure and methods of fabrication thereof.
    Type: Application
    Filed: October 16, 2015
    Publication date: August 10, 2017
    Applicant: Agency for Science, Technology and Research
    Inventors: Jifang Tao, Hong Cai, Alex Yuandong Gu, Hyun Kee Chang
  • Publication number: 20160273947
    Abstract: In various embodiments, a device for determining a property of a fluid may be provided. The device may include a fluid receiving structure configured to receive the fluid having a first condition. The device may further include a flow control structure coupled to the fluid receiving structure. The flow control structure may be configured to change the first condition of the fluid to a second condition. The device may further include a determination mechanism configured to determine the property of the fluid based on the second condition. The device may also include a voltage generation mechanism a voltage generation mechanism configured to generate a voltage based on the second condition.
    Type: Application
    Filed: November 21, 2014
    Publication date: September 22, 2016
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Xiaojing MU, Chengliang SUN, Alex Yuandong GU
  • Publication number: 20160111980
    Abstract: According to embodiments of the present invention, an energy harvesting device is provided. The energy harvesting device includes a microchannel arranged to receive a fluid, a bluff body arranged to interact with the fluid flowing through the microchannel to generate a vortex fluid street, and an energy harvesting element arranged to interact with the vortex fluid street to harvest energy from the fluid. According to further embodiments of the present invention, a method of harvesting energy is also provided.
    Type: Application
    Filed: June 23, 2014
    Publication date: April 21, 2016
    Inventors: Chengliang Sun, Xiaojing Mu, Peter Hyun Kee Chang, Qingxin Zhang, Alex Yuandong Gu, Wei Mong Tsang
  • Publication number: 20150145376
    Abstract: According to embodiments of the present invention, an energy harvesting device is provided. The energy harvesting device includes a plurality of energy harvesting elements, each energy harvesting element including a transducer, and at least one spring arranged in between at least two energy harvesting elements of the plurality of energy harvesting elements to mechanically couple the at least two energy harvesting elements to each other. According to further embodiments of the present invention, a method for forming an energy harvesting device is also provided.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventors: Chengliang SUN, Xiaojing Mu, IIker Ender Ocak, Alex Yuandong Gu
  • Publication number: 20150145374
    Abstract: A transducer is provided, which includes a substrate, wherein a cavity is defined at least partially through the substrate, at least one stopper structure arranged within the cavity, a support layer arranged over the at least one stopper structure and the cavity to seal the cavity, and a piezoelectric functional arrangement arranged on the support layer. According to further embodiments of the present invention, a method for forming a transducer is also provided.
    Type: Application
    Filed: November 25, 2014
    Publication date: May 28, 2015
    Applicant: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Jinghui XU, Hongbin YU, Liang LOU, Alex Yuandong GU