A photothermal immune-imaging assay was innovatively designed for the visual quantitative detection of cancer biomarkers by coupling CuxS nanocrystals with a portable infrared thermal imager on a smartphone. The rolling circle amplification (RCA) technique was used for the formation of a CuxS nanocrystal concatemer, thus opening up new territories in immunoassay development.
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Lv et al. (2019) studied this question.
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