title: SERS optrode as a "fishing rod" to direct pre-concentrate analytes from superhydrophobic surfaces.
abstract: SERS optrodes were used to "fish" aqueous drops from superhydrophobic surfaces. The technique led to an improvement of 2-3 orders of magnitude in the lowest detectable amount of the Raman probe nile blue A, reaching 25 fg (34 attomoles). Further tests run on samples containing pesticide revealed that 20 pg of triazophos could be clearly detected from a single drop.
authors.affiliation: Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu, 610031, China. meikunfan@gmail.com.
authors.forename: Meikun
authors.initials: M
authors.lastname: Fan
authors.forename: Fansheng
authors.initials: F
authors.lastname: Cheng
authors.forename: Cong
authors.initials: C
authors.lastname: Wang
authors.forename: Zhengjun
authors.initials: Z
authors.lastname: Gong
authors.forename: Changyu
authors.initials: C
authors.lastname: Tang
authors.forename: Changzhen
authors.initials: C
authors.lastname: Man
authors.forename: Alexandre G
authors.initials: AG
authors.lastname: Brolo