Comparing plasmonic electrodes prepared by electron-beam lithography and electrochemical reduction of an Au (iii) salt: application in active plasmonic devices

Van-Quynh Nguyen (1, 2) , Delphine Schaming (2) , Pascal G.P. Martin (2) , Jean-Christophe Lacroix (2)

1 USTH - University of Science and Technology of Hanoi
2 ITODYS (UMR_7086) - Interfaces, Traitements, Organisation et Dynamique des Systèmes

This work describes two different methods for obtaining electrodes covered with gold nanoparticles: electron-beam lithography and electroreduction of an Au (III) salt by chronoamperometry. Localized surface plasmon resonances of these different electrodes have been compared. In a second step, these plasmonic AuNP electrodes were covered with an ultrathin organic film of bisthienylbenzene which displays a reversible voltage-dependent switch between conducting and insulating states. The effect of this conductance switch on the plasmonic properties of the AuNPs has been studied.

Keywords: plasmon resonance; plasmonics; nanoparticle

Domains: Chemical Sciences; Other; Chemical Sciences; Material chemistry

Van-Quynh Nguyen, Delphine Schaming, Pascal G.P. Martin, Jean-Christophe Lacroix. Comparing plasmonic electrodes prepared by electron-beam lithography and electrochemical reduction of an Au (iii) salt: application in active plasmonic devices. Advances in Natural Sciences : Nanoscience and Nanotechnology, 2016, 7 (1), pp.015005. ⟨10.1088/2043-6262/7/1/015005⟩. ⟨hal-01822420⟩