Bgi Shenzhen

Wen-wei Zhang

Jin Yang

Jing Zhao

Yuan Jiang

Yuan Li

Xia Zhao

Ao Chen

Zhen-Hua Zhang

Mengzhe Shen

Hui Wang

Xue-qin Jiang

Jay Willis Shafto

Qing Xie

Zhao-hui Wang

Wei-mao Wang

Cheng-mei Xing

Han-dong Li

Mei-hua Gong

Yin-ling Luo

A separation and collection device for cells and biomolecules includes an annular tube and several magnetic beads configured to identify and bind with different cells or molecules in the biological sample. The annular tube defines a through hole for the biological sample to exit. Sizes of different groups of magnetic beads are different. An aperture size of a through hole is changeable such that the plurality of groups of magnetic beads can flow through the through hole in a certain order. A testing system including the separation and collection device is further disclosed.

Separation and collection device for cells and biomolecules, and testing system

A gene chip includes a chip carrier, a plurality of DNA nanoballs assembled on the chip carrier, and a polymer film formed on the chip carrier and wrapping the DNA nanoballs. The polymer film includes at least one of a film of a positively charged polymer, a film of a positively charged polymer which is modified, a film of a zwitterionic polymer, and a composite polymer film. The composite polymer film is formed by a layer-by-layer self-assembly process of a positively charged polymer and a negatively charged polymer. The gene chip has good sequencing quality and different functions can be achieved by coating with different polymers, such as the chip surface rapidly drying out and surface non-specific adsorption. A method of preparing a gene chip is further disclosed.

Gene chip and method of preparing the same

A lens-free microscopic imaging system (), which is used to image microbeads () with pattern codes, includes an illumination system () and an imaging system (). The illumination system () includes an illumination light source () and an excitation light source (). The imaging system () includes an image sensor (). The illumination light source () is used to emit illumination light to irradiate the microbeads (), causing the irradiated microbeads () to be imaged on the image sensor. The excitation light source () is used to emit excitation light to excite the microbeads () to generate specific signals. The image sensor () is used to collect the images of the microbeads () and the specific signals to generate images. The imaging system () does not require a lens system. The present disclosure improves a detection efficiency of the microbeads ().

Lens-free microscopic imaging system and method, and biochemical substance detection system and method

Growing community of inventors

Shenzhen, China

Wen-wei Zhang