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.

公开(公告)号：US12194687B2

公开(公告)日：2025-01-14

申请号：US17777284

申请日：2021-04-30

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Bo Song ,  Zhi Zhang ,  Lei Zhang ,  Yusheng Shi

IPC: B29C64/393 ,  B29C64/336 ,  B33Y50/02 ,  B29L31/00 ,  B33Y10/00 ,  B33Y80/00

Abstract: A method for forming a multi-material mechanical functional member in additive manufacturing. The method includes the following steps: S1: dividing an object to be formed into a plurality of portions, analyzing and measuring mechanical properties of each portion, and constructing a unit cell library; S2: forming a lattice structure by using a unit cell structure in the unit cell library to obtain the lattice structure corresponding to each portion; S3: selecting a raw material of the lattice structure, measuring and comparing mechanical properties of each lattice structure with the mechanical properties of each portion of the object to be formed, where when the mechanical properties of each portion are satisfied, the lattice structure is the required lattice structure, otherwise, step S2 is repeated; and S4: forming a three-dimensional model by a method of additive manufacturing to accordingly obtain the required object to be formed.

公开(公告)号：US11858205B1

公开(公告)日：2024-01-02

申请号：US17882518

申请日：2022-08-05

Applicant: Huazhong University of Science and Technology

Inventor： Bin Su ,  Zhenhua Wu ,  Congcan Shi ,  Yike Li ,  Chunze Yan ,  Yusheng Shi

IPC: B29C64/153 ,  B33Y10/00 ,  B33Y70/00 ,  B29K105/00 ,  B29K101/12

CPC classification number: B29C64/153 ,  B33Y10/00 ,  B33Y70/00 ,  B29K2101/12 ,  B29K2105/251

Abstract: The present invention provides composites with controllable superhydrophilic and superhydrophobic performances, a 3D printing method and 3D printed parts. The composites with controllable superhydrophilic and superhydrophobic interface performances comprise hydrophobic powder and/or hydrophilic powder and jointing phase powder, wherein the jointing phase powder is thermoplastic polymers. The present invention can print the parts with a continuous wettability change from superhydrophilic to superhydrophobic performances by regulating the mass percentage of the hydrophobic powder, the hydrophilic powder and the jointing phase powder. Furthermore, the present invention can prepare the models with various shapes according to different application scenes, and regulate the interface wettability performances of the models.

公开(公告)号：US11358223B2

公开(公告)日：2022-06-14

申请号：US17401334

申请日：2021-08-13

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Bo Song ,  Junxiang Fan ,  Shuaishuai Wei ,  Yusheng Shi

IPC: B22F10/28 ,  B33Y80/00 ,  B33Y10/00 ,  C22C14/00

Abstract: The disclosure belongs to a technical field related to metamaterials and discloses a multi-scale three-dimensional pentamode metamaterial and an additive manufacturing method thereof. The multi-scale three-dimensional pentamode metamaterial has a body centered cubic (BCC) structure and includes a plurality of rods and a plurality of node structures. Two ends of each of the rods are connected to the node structures. Each of the rods has a cylindrical shape and is provided with a biconical through hole. From one end of the rod towards the other end of the rod, a diameter of the biconical through hole gradually decreases and then gradually increases. A chamber is formed inside each of the node structures, the biconical through hole communicates with the chamber, and the chamber is filled with a lattice structure.

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.

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.