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Flexible, Robust and Conformal SERS Active Substrates for Rapid Trace Detection of Pesticides

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posted on 2022-01-07, 01:03 authored by Samir KumarSamir Kumar
Here, we demonstrate a simple and facile method for
fabricating large area SERS-active, flexible and robust
substrate for conformal and rapid extraction and detection of
trace molecules.
The novel SERS substrate was fabricated by embedding Ag
nanorods into the polydimethylsiloxane (PDMS) polymer.
The in situ SERS measurements on these flexible substrates under mechanical tensile strain conditions were performed.
Our results show that flexible SERS substrates can withstand a tensile strain (ε) value as high as 30% without losing SERS performance.
The functionality of AgNRs embedded PDMS SERS substrate was demonstrated by directly extracting trace amount (~10-9 g/cm2) of thiram pesticide directly from fruit peels via simple“paste and peel off” method.

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