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    Independently temperature-controlled high-temperature selective laser sintering frame structure
    2.
    发明授权
    Independently temperature-controlled high-temperature selective laser sintering frame structure 有权

    公开(公告)号：US10821675B2

    公开(公告)日：2020-11-03

    申请号：US16357791

    申请日：2019-03-19

    Applicant: Huazhong University of Science and Technology

    Inventor： Shifeng Wen ,  Peng Chen ,  Chunze Yan ,  Lei Yang ,  Zhaoqing Li ,  Hongzhi Wu ,  Yusheng Shi

    IPC: B29C64/153 ,  B29C64/393 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/245 ,  B29K71/00

    Abstract: The present disclosure belongs to the technical field of advanced manufacturing auxiliary equipment, and discloses an independently temperature-controlled high-temperature selective laser sintering frame structure, comprising a galvanometric laser scanning system, a powder feeding chamber, a forming chamber and a heat-insulating composite plate, and targeted optimization design is performed on the respective functional components. According to the invention, the independently temperature-controlled frame structure can simultaneously ensure the uniformity of the powder preheating temperature field of the powder feeding chamber platform and the uniformity of the processing temperature field of the forming chamber platform, so that powder on the powder feeding chamber platform can reach the sinterable temperature before being conveyed, and conveyance of cold powder to the sintered melt is avoided, thereby reducing the possibility of warpage of the parts while reducing actual sintering delay time and improving actual sintering efficiency. The independently temperature-controlled frame structure of the present disclosure is particularly suitable for high-temperature laser sintering of high-performance polymers such as polyaryletherketones and aromatic polyamides at 400° C.

    Flexible piezoelectric sensor based on 4D printing
    5.
    发明授权
    Flexible piezoelectric sensor based on 4D printing 有权

    公开(公告)号：US12251878B2

    公开(公告)日：2025-03-18

    申请号：US18391682

    申请日：2023-12-21

    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Chunze Yan ,  Hongzhi Wu ,  Bin Su ,  Yusheng Shi

    IPC: B29C64/386 ,  B22F10/18 ,  B22F10/28 ,  B22F10/38 ,  B22F12/30 ,  B29C64/153 ,  B29C64/307 ,  B33Y80/00 ,  H10N30/30 ,  H10N35/80 ,  B22F10/12

    Abstract: The disclosure belongs to the technical field of additive manufacturing, and discloses a flexible piezoelectric sensor based on 4D printing. The sensor includes a magnetic part and a conductive part, wherein: the conductive part includes two substrates disposed opposite to each other and a spiral structure disposed between the two substrates. Both the two substrates and the spiral structure are made of conductive metal materials. The magnetic part has a flexible porous structure and is arranged between the two substrates to generate a magnetic field. When the two substrates are subjected to external pressure, the spiral structure and the magnetic part are compressed simultaneously, the magnetic flux passing through the spiral structure changes, and the voltage of the two substrates changes, by measuring the voltage change of the two substrates to reflect the change of external pressure, the pressure measuring process is achieved.

    FLEXIBLE PIEZOELECTRIC SENSOR BASED ON 4D PRINTING AND PREPARATION METHOD THEREOF
    7.
    发明申请
    FLEXIBLE PIEZOELECTRIC SENSOR BASED ON 4D PRINTING AND PREPARATION METHOD THEREOF 有权

    公开(公告)号：US20210280767A1

    公开(公告)日：2021-09-09

    申请号：US17037745

    申请日：2020-09-30

    Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

    Inventor： Bin Su ,  Hongzhi Wu ,  Chunze Yan ,  Yusheng Shi

    IPC: H01L41/06 ,  B29C64/153 ,  H01L41/04 ,  H01L41/113 ,  B29C64/386 ,  B29C64/307

    Abstract: The disclosure belongs to the technical field of additive manufacturing, and discloses a flexible piezoelectric sensor based on 4D printing and a preparation method thereof. The sensor includes a magnetic part and a conductive part, wherein: the conductive part includes two substrates disposed opposite to each other and a spiral structure disposed between the two substrates. Both the two substrates and the spiral structure are made of conductive metal materials. The magnetic part has a flexible porous structure and is arranged between the two substrates to generate a magnetic field. When the substrate is subjected to external pressure, the spiral structure and the magnetic part are compressed simultaneously, the magnetic flux passing through the spiral structure changes, and the voltage of the two substrates changes, by measuring the voltage change of the two substrates to reflect the change of external pressure, the pressure measuring process is achieved.

    Method for preparing three-dimensional porous graphene material
    8.
    发明授权
    Method for preparing three-dimensional porous graphene material 有权

    公开(公告)号：US10378113B2

    公开(公告)日：2019-08-13

    申请号：US15614574

    申请日：2017-06-05

    Applicant: Huazhong University of Science and Technology

    Inventor： Chunze Yan ,  Yusheng Shi ,  Wei Zhu

    IPC: C23F4/04 ,  B33Y10/00 ,  C01B32/186 ,  C01B32/184 ,  C01B32/194

    Abstract: A method for preparing a three-dimensional porous graphene material, including: a) constructing a CAD model corresponding to a required three-dimensional porous structure, and designing an external shape and internal structure parameters of the model; b) based on the CAD model, preparing a three-dimensional porous metal structure using a metal powder as material; c) heating the three-dimensional porous metal structure and preparing a metal template of the required three-dimensional porous structure; d) placing the metal template in a tube furnace and heating the metal template to a temperature of between 800 and 1000° C.; standing for 0.5-1 hr, introducing a carbon source to the tube furnace for continued reaction, cooling resulting products to room temperature to yield a three-dimensional graphene grown on the metal template; and e) preparing a corrosive solution, and immersing the three-dimensional graphene in the corrosive solution.

    Superconducting power generation device and power generation method
    9.
    发明授权
    Superconducting power generation device and power generation method 有权

    公开(公告)号：US12027952B2

    公开(公告)日：2024-07-02

    申请号：US17646376

    申请日：2021-12-29

    Applicant: Huazhong University of Science and Technology

    Inventor： Bin Su ,  Zheng Ma ,  Chunze Yan ,  Yusheng Shi

    IPC: H02K55/00 ,  H02K5/20 ,  H02K9/19

    CPC classification number: H02K55/00 ,  H02K5/20 ,  H02K9/19

    Abstract: The present disclosure provides a superconducting power generation device and a power generation method. The device includes a superconductor, a conductive coil, a permanent magnet and a cooling medium. When ambient temperature is lower than its superconducting critical temperature, the superconductor, made of the second-type superconducting material, is capable of generating a magnetic levitation force to an outer permanent magnet and levitate it. When an external force is applied to the permanent magnet, its position changes compared to the conductive coil, which affects the magnetic flux passing through the coil and induces the generation of electromotive force in the coil, thereby converting mechanical energy to electric energy. By using the device provided by the present disclosure, the conversion from the mechanical energy to the electric energy in an ultra-low temperature environment can be achieved, and thus, problems about energy sources on low-temperature celestial bodies in extrasolar systems are solved.

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