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- W3002820264 abstract "Abstract Point-of-care testing (POCT) is widely used for early diagnosis and monitoring of diseases. Lateral flow assay (LFA) is a successfully commercial tool for POCT. However, LFA often suffers from a lack of quantification and analytical sensitivity. To solve these drawbacks, we have previously developed a thermal LFA using plasmonic gold nanoparticles for thermal contrast into a portable device. Although this methodology significantly improves the analytical sensitivity compared with conventional visual detection, quantification problems are still remaining. In this study, we optimized the operating conditions for the device using conduction and radiation thermal sensing modes allowing the quantification of LFA. The limit of detection of the strips merely containing nanoparticles was decreased by 5-fold (conduction mode) and 12-fold (radiation mode) compared to traditional visual detection. The effect of the ambient temperature was studied for both methods of detection showing that the radiation mode was more affected by the ambient temperature than the conduction mode. To validate the thermal sensing method, human chorionic gonadotropin (HCG) biomarker was quantified using our LFA strips, obtaining a detection limit of 2.8 mIU/mL when using the radiation method of detection." @default.
- W3002820264 created "2020-01-30" @default.
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- W3002820264 date "2020-01-13" @default.
- W3002820264 modified "2023-10-14" @default.
- W3002820264 title "A plasmonic thermal sensing based portable device for lateral flow assay detection and quantification" @default.
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- W3002820264 doi "https://doi.org/10.1186/s11671-019-3240-3" @default.
- W3002820264 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6957652" @default.
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