Journal
MICROCHIMICA ACTA
Volume 190, Issue 11, Pages -Publisher
SPRINGER WIEN
DOI: 10.1007/s00604-023-06021-5
Keywords
Biosensor; Sensor array; Bacteria identification; Fluorescent; Colorimetric; Machine learning
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Biosensors have limitations in detecting only one species of bacteria, but optical sensor arrays based on pattern recognition/machine learning algorithms have gained attention as a new type of biosensor. These sensor arrays can acquire multiple features of a target, forming a feature pattern, and determine the bacteria species.
Biosensors have been widely used for bacteria determination with great success. However, the lock-and-key methodology used by biosensors to identify bacteria has a significant limitation: it can only detect one species of bacteria. In recent years, optical (fluorescent and colorimetric) sensor arrays are gradually gaining attention from researchers as a new type of biosensor. They can acquire multiple features of a target simultaneously, form a feature pattern, and determine the bacteria species with the help of pattern recognition/machine learning algorithms. Previous reviews in this area have focused on the interaction between the sensor array and bacteria or the materials used to make the sensors. This review, on the other hand, will provide researchers with a better understanding of the field by discussing fluorescent and colorimetric sensor arrays based on the mechanism of optical signal generation. These sensor arrays will be compared based on the identified species. Finally, we will discuss the limitations of these sensor arrays and explore possible solutions.
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