Abstract
Paper-based sensors have received increasing attention in the last decade, their use has spread to various application fields, such as clinical diagnostic, food safety, environmental monitoring, etc. Feature inherent to on-side detection is suitable to be used as point-of-care (POC) testing, including avoided sampling, sample preparation, and laborious procedure in the classical clinical lab, which is undoubtedly driving many developments of this lab-on-paper technology. The detection of biomarkers that are related to human health conditions has to play important role in the indication of the risk of diseases. In this review, the development of paper-based sensors for the detection of important biomarkers is presented. The also emphasis on recognition elements, such as chromophores/fluorophores, plasmonic nanoparticles, metal nanoclusters, etc., used to serve suitable selectivity and sensitivity. The performance of paper-based sensors using various techniques, including optical and electrochemical and other detection techniques are addressed. Furthermore, their limitations and prospects are discussed. The review also highlights cutting-edge technologies for further enhancement in the sensor performances for biomarkers detection.
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