公开(公告)号：US20240176315A1

公开(公告)日：2024-05-30

申请号：US18430513

申请日：2024-02-01

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Lanyu ZHANG ,  Boyu ZHAN ,  Jian GAO ,  Yachao LIU ,  Yun CHEN ,  Xin CHEN ,  Nan HUANG ,  Huake WANG ,  Xuanzhu CHEN

IPC: G05B13/04 ,  H02P25/06

CPC classification number: G05B13/042 ,  G05B13/048 ,  H02P25/06

Abstract: A linear motor motion control method, device, equipment and storage medium. The proposed invention uses an extended state observer constructed in advance based on the model parameters of the linear motor, and performs state estimation based on the total control amount of the linear motor and the actual displacement signal to obtain each observation signal. The phase advance controller is used to improve the estimated lag of the disturbance observation signal, and a model prediction controller built in advance based on the mathematical model of the linear motor is used to perform rolling optimization based on each observation signal to obtain the optimal control amount increment; The total control amount is updated based on the improved disturbance observation signal and the optimal control amount increment, and the corresponding drive signal is output to the drive end of the linear motor based on the updated total control amount.

公开(公告)号：US20230389431A1

公开(公告)日：2023-11-30

申请号：US18448861

申请日：2023-08-11

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Pengfei YU ,  Aoke SONG ,  Zijian LI ,  Maoxiang HOU ,  Xin CHEN

IPC: H10N30/082 ,  H10N30/081

CPC classification number: H10N30/082 ,  H10N30/081 ,  H10N30/30

Abstract: A core-shell coaxial gallium nitride piezoelectric nanogenerator includes a core-shell coaxial gallium nitride nanowire array and a flexible substrate. A first conductive layer is provided on a surface of the flexible substrate. The core-shell coaxial gallium nitride nanowire array is fixed to the flexible substrate. A top end of the core-shell coaxial gallium nitride nanowire array is provided with a second conductive layer. The first conductive layer and the second conductive layer are both connected to an external circuit via a wire. A nanowire of the core-shell coaxial gallium nitride nanowire array is covered with an alumina layer. A method for preparing the core-shell coaxial gallium nitride piezoelectric nanogenerator is further provided. The gallium nitride nanowire array is formed by electrodeless photoelectrochemical etching.

公开(公告)号：US20190189459A1

公开(公告)日：2019-06-20

申请号：US16221456

申请日：2018-12-15

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Xin CHEN ,  Jian GAO ,  Zhengping WANG ,  Haidong YANG

IPC: H01L21/306 ,  H01L21/308 ,  H01L21/311 ,  H01L21/3213 ,  H01L21/67 ,  G01F23/64

CPC classification number: H01L21/30612 ,  G01F23/64 ,  H01L21/3081 ,  H01L21/311 ,  H01L21/3213 ,  H01L21/67063

Abstract: Disclosed is a processing device for the third generation semiconductor materials. The device includes a reaction device, an operating platform and a support device. A reaction chamber is located inside the reaction device and the upper and lower ends of the reaction device are covered with an upper cover and a lower cover, respectively. An etching solution injection port and an etching solution discharge port are provided at the side wall of the reaction chamber. A stirring excitation coil, a plurality of conducting rods, a plurality of heating rods, a plurality of sealing rings and a workpiece are provided inside of the reaction chamber. The stirring excitation coil is mounted just under the upper cover; the conducting rods and the heating rods are respectively mounted in a circumferentially symmetrical manner in an inner wall of the reaction chamber.

公开(公告)号：US20190185319A1

公开(公告)日：2019-06-20

申请号：US16221457

申请日：2018-12-15

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Xin CHEN ,  Dachuang SHI ,  Jian GAO ,  Zhengping WANG ,  Haidong YANG

IPC: B81C1/00 ,  H01L21/306 ,  H01L29/06

Abstract: A method of processing nano- and micro-pores includes washing a substrate and cleaning a surface of the substrate; spin-coating photoresist, exposing the substrate and developing to form the substrate with a pattern; 3. depositing micro-nano metal particles on the surface of the substrate; wherein the micro-nano metal particles are centered on a magnetic core; and the surface of the magnetic core is plated with a metal nano-particle coating composed of a plurality of gold, silver or aluminum nanoparticles; removing the photoresist, and maintaining dot arrays of the micro-nano metal particles; applying laser irradiation and a strong uniform magnetic field on the substrate, so that the substrate is processed to form processed structures; and after the processed structures being formed into nano-/micro-pores with targeted pore size, shape and depth, stopping the laser irradiation and removing the strong uniform magnetic field.

公开(公告)号：US20240363793A1

公开(公告)日：2024-10-31

申请号：US18769413

申请日：2024-07-11

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Yanhui CHEN ,  Li MA ,  Hao ZHANG ,  Jintao CHEN ,  Maoxiang HOU ,  Xin CHEN

IPC: H01L33/00

CPC classification number: H01L33/005

Abstract: An ejector pin sliding on membrane-based device and method for mass transfer of mini light-emitting diodes (Mini-LEDs) are provided. The device includes a gantry transverse beam. The gantry transverse beam is provided with an ejector pin base, and the ejector pin base is configured to move along the gantry transverse beam. The ejector pin base is fixedly provided with a vision camera and an ejector pin. A blue membrane is horizontally provided at a side of the gantry transverse beam close to the ejector pin, and is spaced from the gantry beam. A surface of a side of the blue membrane away from the gantry transverse beam is adhesively provided with a plurality of Mini-LED chips arranged evenly. A transfer substrate is horizontally provided at a side of the blue membrane close to the plurality of Mini-LED chips, and is spaced from the blue membrane.

公开(公告)号：US20240159521A1

公开(公告)日：2024-05-16

申请号：US18423054

申请日：2024-01-25

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Jian GAO ,  Yizhong ZHUANG ,  Lanyu ZHANG ,  Haixiang DENG ,  Yun CHEN ,  Xin CHEN

IPC: G01B11/25 ,  G06T7/73 ,  G06T7/80 ,  G06T17/00 ,  H04N13/239

CPC classification number: G01B11/2545 ,  G06T7/75 ,  G06T7/85 ,  G06T17/00 ,  H04N13/239 ,  G06T2207/10012 ,  G06T2207/10028 ,  G06T2207/30204 ,  G06T2210/56

Abstract: A three-dimensional measurement method combines the three-step phase shift method to embed the marker line information into the sinusoidal stripe pattern to obtain the target stripe pattern. The target stripe pattern is projected onto the surface of the object to be measured, and the wrapped phase image, mean intensity image and modulated intensity image of the stripe pattern collected by the left and right cameras are solved. The mask image according to the mean intensity image and modulation intensity image is solved to extract the marker line. The spatial phase unwrapping starting from the marker line in the wrapped phase image is performed to obtain the spatial phase. The spatial phase matching based on the unique correspondence between the left and right cameras based on the spatial phase of the marker line is performed, the best matching point of the right camera is obtained.

公开(公告)号：US20230390746A1

公开(公告)日：2023-12-07

申请号：US18339190

申请日：2023-08-17

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Shengbao LAI ,  Biao LI ,  Zuohui LIU ,  Guanhai WEN ,  Maoxiang HOU ,  Xin CHEN

IPC: B01J27/224 ,  B01J21/18 ,  B01J6/00 ,  B01J37/06 ,  B01J37/08 ,  B01J37/04 ,  B01J35/00 ,  C01B3/04

CPC classification number: B01J27/224 ,  B01J21/18 ,  B01J6/001 ,  B01J37/06 ,  B01J37/08 ,  B01J37/04 ,  B01J35/004 ,  C01B3/045

Abstract: This application discloses a silicon carbide (SiC)-loaded graphene photocatalyst for hydrogen production under visible light irradiation and a preparation method thereof. Pure SiC and pure black carbon are respectively prepared and mixed to obtain a mixture with a resistance less than 100Ω. Then the mixture was vacuumized and processed with a current pulse with an increasing voltage until a breakdown occurs, and subjected to ultrasonic stirring, centrifugal washing and vacuum drying in turn to obtain the SiC-loaded graphene photocatalyst. By means of the current pulse, a heterojunction is formed between SiC and graphene to improve the catalytic activity of the photocatalyst; and the photocatalytic hydrogen production rate of SiC nanoparticles can be enhanced after loaded on the graphene.

公开(公告)号：US20230364657A1

公开(公告)日：2023-11-16

申请号：US18359139

申请日：2023-07-26

Applicant: Guangdong University of Technology

Inventor： Yun CHEN ,  Biao LI ,  Aoke SONG ,  Shankun DONG ,  Shengbao LAI ,  Maoxiang HOU ,  Xin CHEN

IPC: B08B7/02 ,  B06B1/06

CPC classification number: B08B7/028 ,  B06B1/0688 ,  B06B2201/56 ,  B06B2201/71 ,  G03F7/405

Abstract: A method of fabricating a film vibration device, including: photoetching a surface of a silicon wafer to form a circular-hole array; etching an aluminum layer on the silicon wafer; etching the silicon wafer to form a through-hole array to obtain a porous silicon wafer; attaching a polyethylene terephthalate (PET) sheet to a side of the porous silicon wafer; ablating the PET sheet to obtain a porous PET film; attaching a polyvinylidene fluoride (PVDF) film to a lower side of the porous silicon wafer; performing vacuumization above the porous silicon wafer, while heating the PVDF film below the porous silicon wafer to create dome micro-structures on the PVDF film; and laminating the porous PET film on each of two sides of the PVDF film to obtain the film vibration device. This application also provides a cleaning device having the film vibration device.

公开(公告)号：US20210219476A1

公开(公告)日：2021-07-15

申请号：US17218367

申请日：2021-03-31

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Xin CHEN ,  Yunbo HE ,  Xiquan MAI ,  Chengqiang CUI ,  Qiang LIU ,  Jian GAO ,  Zhijun YANG ,  Xun CHEN ,  Yun CHEN ,  Kai ZHANG ,  Hui TANG ,  Yu ZHANG

IPC: H05K13/04 ,  H01L33/00 ,  H01L33/62

Abstract: A variable pitch electronic component mass transfer apparatus is disclosed. A die-bond transfer head is disposed below each of the die-bond brackets. The die-bond connecting rod is provided with die-bond movable nodes arranged equidistantly. Each of the die-bond movable node is hinged to one of the die-bond brackets. An output end of the die-bond linear motor drives the die-bond connecting rod to move telescopically. A flip-chip transfer head is disposed below each of the flip-chip brackets. The flip-chip connecting rod is provided with flip-chip movable nodes arranged equidistantly. Each of the flip-chip movable nodes is hinged to one of the flip-chip brackets. An output end of the flip-chip linear motor drives the flip-chip connecting rod to move telescopically. An output end of the connecting rod rotating motor is connected to the flip-chip rail, and is configured to turn over the flip-chip rail.

公开(公告)号：US20230357016A1

公开(公告)日：2023-11-09

申请号：US18146378

申请日：2022-12-25

Applicant: GUANGDONG UNIVERSITY OF TECHNOLOGY

Inventor： Huilong LIU ,  Yun CHEN ,  Xin CHEN ,  Yixin ZHENG ,  Kyoung-Sik MOON ,  Dachuang SHI ,  Jian GAO ,  Ching-Ping WONG

IPC: C01B32/184 ,  C01B32/196

CPC classification number: C01B32/184 ,  C01B32/196 ,  C01P2004/04 ,  C01P2002/82 ,  C01P2002/85

Abstract: A method for integrally forming a graphene film (GF) of a high specific surface area (SSA) by ultrafast ultraviolet (UV) laser processing, includes: selecting a carbon precursor material, where the carbon precursor material is one selected from the group consisting of a biomass/hydrogel composite and a heavy hydrocarbon compound; adding an activator solution to an inside of the carbon precursor material to obtain a composite with an activator uniformly loaded, and spreading the composite on a flexible substrate to form a carbon precursor material layer; heating and drying the carbon precursor material layer; in-situ processing with an ultrafast UV laser to obtain an activated GF of a high SSA; and cleaning and drying the activated GF. With the method of the present disclosure, a microporous activated GF of a high SSA can be directly processed in-situ on a flexible substrate.