Overall, the main conceptual advantage of array-based techniques is the parallel analysis of multiple sensor responses to a single analyte by imaging instead of serial screening the responses. permission from . Copyright 2020 American Chemical Society. b) Multiplexed microarray for real time detection of mouse IgM. SWCNTs are modified with chitosan polymers and further functionalized via chelation between NTA, Cu 2+ ions, and His-tagged capture proteins. Binding to the capture protein modifies the distance of Cu 2+ to the SWCNT which serves as proximity quenchers of the SWCNT fluorescence. Reprinted with permission from . Copyright 2018 American Chemical Society. (c) Optical identification of pathogens with a SWCNT-sensor array. Different nanosensors are incorporated in a hydrogel, their multiplexed response allows the differentiation of pathogenic bacteria. Adapted under the terms of a CC-BY 4.0. license from . Copyright 2020 The Authors.