Patents by Inventor Yunhu HE

Yunhu HE 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: 20250213312
    Abstract: The present invention provides a 4D-printed humidity and magnetic dual responsive actuator with a bilayer structure, including a hydrogel film and a numerous of magnetic elastomer filaments, the numerous of magnetic elastomer filaments are printed on the hydrogel film to formed the bilayer structure, wherein the magnetic elastomer filaments are elastomer filaments embedded with magnetic particles, and the dual responsive actuator capable of responding to both humidity and magnetic fields, resulting in a reversible deformation that transforms into helix structures. The printed actuators can initially deform into helix structures in response to humidity stimuli and rapidly contract to a smaller size with the activation of a magnetic field. The shape deformation of this dual-responsive actuator is programmable and reversible, with stable and excellent repeatability.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 3, 2025
    Inventors: Jian LU, Yunhu HE, Zhengyi MAO, Yicheng HAN
  • Publication number: 20250157712
    Abstract: Disclosed are a soft bistable magnetic actuator, a fatigue testing device, and an auto underwater vehicle. The soft bistable magnetic actuator includes a soft precursor. The soft precursor consisting of a soft deformable portion and a soft peripheral portion surrounded. The soft precursor is cast by injection molding, and the soft deformable portion is made of magnetic particles and polymer, and the soft peripheral portion is made of magnetic particles, a mixture of organic liquid and polymer, and the soft deformable portion is buckled by extracting the organic liquid by an organic solvent to shrink the soft peripheral portion.
    Type: Application
    Filed: January 16, 2025
    Publication date: May 15, 2025
    Applicant: City University of Hong Kong Matter Science Research Institute (Futian)
    Inventors: Jian LU, Zhou CHEN, Yunhu HE, Lei WAN
  • Publication number: 20250154446
    Abstract: A magnet-driven bistable dynamic bioreactor, its manufacturing method, and application thereof are provided. The bioreactor has a magnet-driven bistable actuator, a magnetic field generation module, and a connected temperature control module. The magnet-driven bistable actuator includes a magnetic bistable arch membrane. The magnetic field generation module provides a direction-alternating magnetic field, which drives the magnetic bistable arch membrane to switch states between different configurations. This process applies adjustable frequency biaxial bi-directional loading on cells that cultured on membrane, simulating real tissue loading. The temperature control module regulates the temperature of the magnet-driven bistable actuator. The bioreactor enables adjustable frequency biaxial bi-directional loading on cells cultured on the magnetic bistable arch membrane by utilizing an alternating magnetic field to switch its configuration.
    Type: Application
    Filed: September 5, 2024
    Publication date: May 15, 2025
    Inventors: Jian LU, Zhou CHEN, Chengshengze CHU, Yunhu HE, Shiting CHEN, Wanying WANG, Chong WANG
  • Patent number: 12217909
    Abstract: Disclosed are a soft bistable magnetic actuator, a fabrication method thereof, a fatigue testing device, and an auto underwater vehicle. The method for fabricating the soft bistable magnetic actuator includes the following operations: casting a soft precursor by injection molding, wherein the soft precursor consists of a soft deformable portion and a soft peripheral portion surrounded, the soft deformable portion is made of magnetic particles and polymer, and the soft peripheral portion is made of a magnetic particle, a mixture of organic liquid, and polymer; and extracting the organic liquid by an organic solvent shrinks the soft peripheral portion, buckles the soft deformable portion towards one side.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: February 4, 2025
    Assignee: City University of Hong Kong Matter Science Research Institute (Futian)
    Inventors: Jian Lu, Zhou Chen, Lei Wan, Yunhu He
  • Publication number: 20230131840
    Abstract: Disclosed are a soft bistable magnetic actuator, a fabrication method thereof, a fatigue testing device, and an auto underwater vehicle. The method for fabricating the soft bistable magnetic actuator includes the following operations: casting a soft precursor by injection molding, wherein the soft precursor consists of a soft deformable portion and a soft peripheral portion surrounded, the soft deformable portion is made of magnetic particles and polymer, and the soft peripheral portion is made of a magnetic particle, a mixture of organic liquid, and polymer; and extracting the organic liquid by an organic solvent shrinks the soft peripheral portion, buckles the soft deformable portion towards one side.
    Type: Application
    Filed: March 22, 2022
    Publication date: April 27, 2023
    Applicant: UNIVERSITY OF HONG KONG SHENZHEN FUTIAN RESEARCH INSTITUTE
    Inventors: Jian LU, Zhou CHEN, Lei WAN, Yunhu HE