公开(公告)号：US12150992B2

公开(公告)日：2024-11-26

申请号：US17492060

申请日：2021-10-01

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Lan Jiang ,  Yunlong Ma ,  Jie Hu

IPC: A61L27/54 ,  A61K41/00 ,  A61L27/06 ,  A61P35/00 ,  B82Y5/00 ,  B82Y30/00 ,  B82Y40/00 ,  C23C18/42

Abstract: The present disclosure relates to a multifunctional therapeutic biological material and preparation method thereof. The process steps of the preparation method are as follows: (1) preparing various three-dimensional micro/nano composite structure on the surface of a biomedical material by using femtosecond laser double pulses; (2) further preparing a nano-flower structure on the three-dimensional micro/nano composite structure by using hydrothermal synthesis method to construct a heterogeneous structure consisting of the three-dimensional micro/nano composite structure and the nano-flower structure; (3) putting the prepared heterogeneous structure into a mixed solution containing gold ions and platinum ions, and by using ultraviolet light reduction method, reducing in situ into gold-platinum bimetallic nanoparticles on the heterogeneous structure to obtain the multifunctional therapeutic biological material. The multifunctional therapeutic biological material provided by the present disclosure has excellent light-to-heat conversion characteristics, and it can promote bone regeneration, and has functions of tumor treatment and anti-bacterial infection.

公开(公告)号：US11352261B1

公开(公告)日：2022-06-07

申请号：US17508152

申请日：2021-10-22

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Lan Jiang ,  Yongjiu Yuan ,  Xin Li

IPC: H01M4/02 ,  C01B32/184 ,  H01G11/24 ,  H01G11/36 ,  B82Y40/00

Abstract: The present disclosure relates to a graphene-nanoflower shaped MXene composite material, preparation method and application thereof, which belongs to the field of negative electrode materials for supercapacitors. In the present disclosure, a space-time shaping femtosecond laser is utilized to process MXene target in graphene oxide nanoflake dispersion, so as to synthesize a graphene-nanoflower shaped MXene composite material in one-step. This nanoflower shaped MXene has adjustable size and morphology and an extremely large specific surface area; when it is used in an electrode material for supercapacitors, the supercapacitor exhibits an extremely high specific capacitance and good cycle stability. This method utilizes a space-time shaping femtosecond laser to synthesize the graphene-nanoflower shaped MXene composite material, which is highly controllable, and can be used to uniformly prepare the material in large-scale. It has provided a new way for synthesis of materials.

公开(公告)号：US11313971B1

公开(公告)日：2022-04-26

申请号：US17387561

申请日：2021-07-28

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Lan Jiang ,  Baoshan Guo ,  Tianyong Zhang

IPC: G01C3/08 ,  G01S17/894 ,  H04N5/372 ,  G01B11/25 ,  G01S7/484

Abstract: A three-dimensional imaging system and method are provided. The three-dimensional imaging system includes: an ultrashort pulse laser light source configured to generate a detection beam; a supercontinuum spectrum generator configured to generate a supercontinuum spectrum based on the detection beam passing through the supercontinuum spectrum generator; a pulse separation delayer configured to generate a continuous pulse sequence of different wavelengths with a time interval based on the supercontinuum spectrum; a multi-frequency pulse interference fringe generator configured to generate multi-frequency interference fringe patterns of different wavelength ranges with a time interval based on the continuous pulse sequence; and an image acquisition device configured to acquire an optical signal reflected by a sample irradiated by the multi-frequency interference fringe patterns to obtain a three-dimensional topography of the sample.

公开(公告)号：US11253953B1

公开(公告)日：2022-02-22

申请号：US17387662

申请日：2021-07-28

Applicant: BEIJING INSTITUTE OF TECHNOLOGY

Inventor： Lan Jiang ,  Xiaozhe Chen ,  Xin Li ,  Xiaojie Li ,  Misheng Liang

IPC: B23K26/06 ,  B23K26/362 ,  B23K26/067

Abstract: A method and a device for processing a unidirectional flow surface, the method includes: generating a grayscale map having gradually changed grayscale values; generating a holographic phase map having a bionic light spot with gradually changed energies based on the grayscale map; loading the holographic phase map onto a spatial beam shaper; and focusing a laser beam on a surface of an object to be processed after the laser beam passes through the spatial beam shaper, to process structural units having unidirectional flow characteristics on the surface of the object to be processed.