Beijing Institute of Technology

Tsinghua University

Boe Technology Group Co., Ltd.

Beijing Boe Health Technology Co., Ltd.

Lan Jiang

Xin Li

Jianfeng Yan

Jie Hu

Hongliang Wang

Xiaojie Li

Fang Zhai

Guoqiang Zhang

Yanyang Hu

Jiachen Yu

Fuchen Tian

Yunlong Ma

Tianyong Zhang

Jiaqun Li

Yongjiu Yuan

Xiaozhe Chen

Yubin Zhou

Baoshan Guo

Misheng Liang

Provided is a femtosecond laser system for processing a micro-hole array, comprising: a femtosecond laser, a half-wave plate, a polarizer, a concave lens, a convex lens, a diaphragm, a mechanical shutter, a phase-type spatial light modulator, a first plano-convex lens, a reflecting mirror, a second plano-convex lens, a dichroic mirror, a camera, a processing objective lens, a six-axis translation stage and a transmissive white light source.

Femtosecond laser system for processing micro-hole array

A public event administrating system is disclosed. The public event involves a plurality of individuals and the administrating system includes: a data collecting module, a data processing module, a medical resource scheduling module, and a grid administrating module. The data collecting module is configured to acquire initial data about the public event from a plurality of data sources. The data processing module is configured to process the initial data to acquire processed data. The medical resource scheduling module is configured to receive an individual service request and allocate currently available medical resources to an individual requesting service at least according to the individual service request. And, the grid administrating module is configured to divide a geographic region managed by the administrating system into a plurality of grids, and assign a plurality of grid administrators to the plurality of grids to respectively administrate individuals in the plurality of grids.

Public event administrating system

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.

Multifunctional therapeutic biological material and preparation method thereof

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.

Graphene-MXene nanoflower composite material, preparation method and application thereof

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.

Three-dimensional imaging system and method

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.

Method and device for processing unidirectional flow surface

Provided are a protein-matrix microlens array diffraction device and a preparation method thereof. The protein-matrix microlens array diffraction device includes a matrix of a protein crystal. A largest side of the protein crystal has a length of 100 to 500 &#x3bc;m, a surface of the protein crystal where the largest side is located is processed to have an array of microlens-like protrusions, a distance p between two adjacent microlens-like protrusions of the array of microlens-like protrusions is in a range of 10 to 100 &#x3bc;m, a diameter d of the microlens-like protrusion is in a range of 2 to 10 &#x3bc;m, and a height h of the microlens-like protrusion is in a range of 0.05 to 2 &#x3bc;m.

Protein-matrix microlens array diffraction device and method for preparing the same

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Beijing, China

Lan Jiang