Machine learning-assisted optical nano-sensor arrays in microorganism analysis

TrAC Trends in Analytical Chemistry(2023)

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Microbial infection can cause problems for public health, and to realize efficient microorganism detection is of great importance. However, the simultaneous identification of microorganism still faces challenges due to the high similarity of the surface microenvironment. With the assistance of machine learning algorithms, nanomaterials-based optical sensor arrays are emerging as a promising analysis technique for microorganism discrimination with the merits of high sensitivity, time-saving and easy operation. We present here the recent development of machine learning assisted optical sensor arrays for microorganism identification. In the first part, five types of optical nano-sensor arrays that include fluorescent sensor arrays, colorimetric sensor arrays, multi-response-based sensor arrays, SERS-based sensor arrays and FTIR-based sensor arrays are discussed. Then, eight commonly used machine learning algorithms in the array-based sensors are introduced. Detailed calculation principles involved in the statistical analysis of array-based sensors are overviewed. It is ended by outlining the current challenges and perspectives.
Microorganism identification,Optical sensor array,Machine learning,Statistical analysis,Nanomaterials
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