2022 journal article
Voltage-tunable surface-enhanced Raman scattering substrates based on electroactive polymeric membranes containing plasmonic nanoparticles
OPTICS CONTINUUM, 1(12), 2426–2433.
open access via doi.org (publisher)
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Source: Web Of Science
Added: January 23, 2023
We describe voltage-controlled surface-enhanced Raman scattering (SERS) substrates in which the SERS-signals can be actively modulated by applying voltage. These SERS-substrates employ a dielectric electroactive polymer (D-EAP) membrane with a pair of electrically-actuated active regions. When these regions are simultaneously activated, they produce an in-plane contractile strain in the regions of the D-EAP where SERS dye-coated nanoparticles are placed. We demonstrate that SERS-signals from dye-coated silver nanoparticles, deposited on the D-EAP membrane, increases by ∼100% upon application of an actuating voltage. Upon removal of the voltage, actuated active-areas move towards their original positions, leading to a decrease in the SERS-signals.