Research Progress on Portable Bio-optical Sensors

doi:10.13560/j.cnki.biotech.bull.1985.2020-1041

Abstract

Abstract:

A bio-optical sensor is an instrument that is sensitive to biological substances and converts its concentration information into optical signal,which is then converted into electrical signal by a photoelectric device for detection. With the improvement of micro manufacturing technology and nanoscience,bio-optical sensors would constantly be miniaturized. The emergence of various portable bio-optical sensors has made these feasible：diagnosis being carried out at home,food quality being tested on market and environmental pollution being rapidly detected in field. A portable bio-optical sensor is generally composed of three parts,i.e. a light source,an optical path and a photoelectric element. The optimization of the components in the sensor system would be beneficial to convenient detection and flexible applicability,as well as the enhancement of the sensitivity. This paper focuses on the research progress on portable bio-optical sensors from 3 aspects of the excitation light source,the principle of bio-optical detection,and the semiconductor photosensitive elements respectively. In the future,biological detection devices are tending to be low-cost,portable,intelligent and efficient. The research based on bio-optical characteristics and the optimization of sensor structure is expected to allow portable bio-optical sensors to have great commercial value and broad application value in future sensing detection.

Key words: bio-optical sensor, micro manufacturing technology, nanoscience, portable, rapid detection, semiconductor photoelectric device

FU Zhi-qiang, XIONG Yan. Research Progress on Portable Bio-optical Sensors[J]. Biotechnology Bulletin, 2021, 37(3): 219-226.

Figures/Tables 2

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