Patents by Inventor Qingyuan Cai

Qingyuan Cai 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).

  • Patent number: 11810988
    Abstract: The present disclosure provides an integrated infrared circular polarization detector with a high extinction ratio and a design method thereof. The detector structurally includes a metal reflective layer, a bottom electrode layer, a quantum well layer, a top electrode layer, and a two-dimensional chiral metamaterial layer. Under circularly polarized light with the selected handedness, surface plasmon polariton waves are generated at the interface between the two-dimensional chiral metamaterial layer and the semiconductor, and has a main electric field component aligned with the absorption direction of the quantum wells, thereby enhancing the absorption of the quantum wells. Under circularly polarized light with the opposite handedness, since most of the optical power is reflected, surface plasmon polariton waves cannot be effectively excited, and the absorption of the quantum wells is extremely low, thus realizing the capability of infrared circular polarization detection with a high extinction ratio.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: November 7, 2023
    Assignee: Shanghai Institute of Technical Physics, Chinese Academy of Sciences
    Inventors: Jing Zhou, Zeshi Chu, Xu Dai, Yu Yu, Mengke Lan, Shangkun Guo, Jie Deng, Xiaoshuang Chen, Qingyuan Cai, Fangzhe Li, Zhaoyu Ji
  • Patent number: 11581587
    Abstract: A discharge energy recovery and formation capacity grading apparatus for a soft-package power battery comprises a rack, a condition-variable charge and discharge power box arranged on the rack, a battery formation capacity-grading clamping movement mechanism for clamping positive and negative electrode lugs of the soft-package power battery, a battery tray for, a movement mechanism control assembly for controlling the movement of the battery formation and capacity grading clamping movement mechanism, a safety protection sensor assembly, and a battery formation capacity-grading control mechanism. The charge and discharge power box, the battery formation capacity-grading clamping movement mechanism, the battery tray, the movement mechanism control assembly, and the safety protection sensor assembly are all in signal connection with the battery formation capacity-grading control mechanism.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: February 14, 2023
    Assignee: ZHEJIANG HANGKE TECHNOLOGY INCORPORATED COMPANY
    Inventors: Ji Cao, Zheng Cao, Qingyuan Cai
  • Publication number: 20220393049
    Abstract: The present disclosure provides an integrated infrared circular polarization detector with a high extinction ratio and a design method thereof. The detector structurally includes a metal reflective layer, a bottom electrode layer, a quantum well layer, a top electrode layer, and a two-dimensional chiral metamaterial layer. Under circularly polarized light with the selected handedness, surface plasmon polariton waves are generated at the interface between the two-dimensional chiral metamaterial layer and the semiconductor, and has a main electric field component aligned with the absorption direction of the quantum wells, thereby enhancing the absorption of the quantum wells. Under circularly polarized light with the opposite handedness, since most of the optical power is reflected, surface plasmon polariton waves cannot be effectively excited, and the absorption of the quantum wells is extremely low, thus realizing the capability of infrared circular polarization detection with a high extinction ratio.
    Type: Application
    Filed: November 10, 2020
    Publication date: December 8, 2022
    Applicant: SHANGHAI INSTITUTE OF TECHNICAL PHYSICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Jing Zhou, Zeshi Chu, Xu Dai, Yu Yu, Mengke Lan, Shangkun Guo, Jie Deng, Xiaoshuang Chen, Qingyuan Cai, Fangzhe Li, Zhaoyu Ji
  • Publication number: 20220085228
    Abstract: The present disclosure provides a two-dimensional material detector with an asymmetrically integrated optical microstrip antenna, structurally including a metal reflecting surface, a dielectric spacer layer, a two-dimensional active material layer, a top source electrode, and a drain electrode integrated with a metal strip array. Self-driven photoresponse of a metal/two-dimensional material/metal structure is induced by a Schottky junction formed due to contact between the two-dimensional material and the metal. The asymmetrically integrated optical microstrip antennas break the symmetry between the two contact/two-dimensional material junctions. Light absorption in the contact/two-dimensional material junction integrated with optical patch antennas is significantly enhanced by efficient light in-coupling and intensified light localization; meanwhile, the extended boundary of the contact/two-dimensional material junction enlarges the photocurrent collection area.
    Type: Application
    Filed: September 15, 2021
    Publication date: March 17, 2022
    Applicant: Shanghai Institute of Technical Physics Chinese Academy of Sciences
    Inventors: Jing Zhou, Shangkun Guo, Yu Yu, Zhaoyu Ji, Xu Dai, Jie Deng, Xiaoshuang Chen, Qingyuan Cai, Zeshi Chu, Fangzhe Li, Mengke Lan
  • Publication number: 20210210801
    Abstract: A discharge energy recovery and formation capacity grading apparatus for a soft-package power battery comprises a rack, a condition-variable charge and discharge power box arranged on the rack, a battery formation capacity-grading clamping movement mechanism for clamping positive and negative electrode lugs of the soft-package power battery, a battery tray for, a movement mechanism control assembly for controlling the movement of the battery formation and capacity grading clamping movement mechanism, a safety protection sensor assembly, and a battery formation capacity-grading control mechanism. The charge and discharge power box, the battery formation capacity-grading clamping movement mechanism, the battery tray, the movement mechanism control assembly, and the safety protection sensor assembly are all in signal connection with the battery formation capacity-grading control mechanism.
    Type: Application
    Filed: September 19, 2019
    Publication date: July 8, 2021
    Inventors: JI CAO, ZHENG CAO, QINGYUAN CAI
  • Publication number: 20130082026
    Abstract: A method for chemically plating metal on surfaces of a capacitive touch panel includes sputtering ITO on surfaces of a glass substrate of a capacitive touch panel to form a double-sided ITO glass; dividing the double-sided ITO glass into a visible region and a peripheral region of a touch glass according to layout; etching on the visible region of each touch glass via a photo art to form induction electrodes of a sensor and etching on the peripheral region thereof to form wiring traces; and thereafter printing a protecting film on the visible region of each touch glass and plating the wiring traces of each touch glass with metal via a chemical nickel plating art and a chemical gold plating art.
    Type: Application
    Filed: May 28, 2011
    Publication date: April 4, 2013
    Inventors: Qingyuan Cai, Masahide Nishi