title: A novel scattering switch-on detection technique for target-induced plasmon-coupling based sensing by single-particle optical anisotropy imaging.
abstract: We reported a novel scattering switch-on detection technique using flash-lamp polarization darkfield microscopy (FLPDM) for target-induced plasmon-coupling based sensing in homogeneous solution. With this method, we demonstrated sub-nM sensitivity for hydrogen sulfide (H2S) detection over a dynamic range of five orders of magnitude. This robust technique holds great promise for applications in toxic environmental pollutants and biological molecules.
authors.affiliation: State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Hunan University, Changsha, 410082, P. R. China. xbcs1985@hnu.edu.cn.
authors.forename: Lan
authors.initials: L
authors.lastname: Peng
authors.forename: Xuan
authors.initials: X
authors.lastname: Cao
authors.forename: Bin
authors.initials: B
authors.lastname: Xiong
authors.forename: Yan
authors.initials: Y
authors.lastname: He
authors.forename: Edward S
authors.initials: ES
authors.lastname: Yeung