Metallic nanobiosensors for biological analysis and medical diagnostics

Tan, YN; Zheng, XT; Yu, Y

doi:10.1049/PBHE001E_ch26

Metallic nanobiosensors for biological analysis and medical diagnostics

Lookup NU author(s): Professor Yen Nee Tan

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Abstract

A myriad of assay formats are available for nanobiosensing applications. The key to select a particular one is based on the requirement of target detection. When sensitivity is of primary concern, the fluorescence and DLS methods usually offer lower detection limits than the colorimetric and refractive index sensing. SERS can even detect at single molecule level. In terms of simplicity and reliance on equipment, the colorimetric method outperforms DLS and SERS since it can be viewed by even the naked eyes. It might be noteworthy to highlight that metal NCs which represent a new class of fluorophore has the potential to outperform the conventional organic dyes in fluorescence-based nanobiosensors development.