Dynamic Modulation of Plasmonic Structures


  • Hans Dyrnesli iNANO Center, University of Aarhus, Aarhus 8000, Denmark
  • Gunnar Kl ̈os iNANO Center, University of Aarhus, Aarhus 8000, Denmark
  • Matteo Miola Carbon Dioxide Activation Center (CADIAC), iNANO Center, University of Aarhus, Aarhus 8000, Denmark
  • Duncan S. Sutherland iNANO Center, University of Aarhus, Aarhus 8000, Denmark




Nanofabrication, active plasmonics, silver electrodeposition, gold nanoparticles, hole-mask colloidal lithography.


A method for active switching of plasmonic structures by surface oxide-
stabilized silver deposition is presented. The longitudinal dipole mode in pairs
of closely spaced gold nanodisks on ITO was switched by depositing and
removing a connecting layer of silver in solution. Optical properties were
studied using VIS-NIR extinction spectroscopy and confirmed by FDTD
simulations. Uniform dimensional growth by selective silver deposition
brought pairs of gold nanodisks of 73 nm average diameter and 11 nm
average distance into electrical contact. The growth process was studied by
spectroelectrochemical measurements, and uniformity and selectivity were
confirmed by SEM and XPS analysis, respectively. Uniform deposition was
achieved by introduction of surface oxides on immobilized gold nanodisks,
and selectivity by undervoltage deposition. Deposition of silver on disk pairs
caused a blue-shift of the transverse dipole mode resonance of roughly 50 nm,
and emergence of a new longitudinal mode with resonance around 960 nm.
These results demonstrate the possibility for not only tuning of resonance
peak position, but also on-demand switching of an additional mode which can
provide materials with switchable optical properties.


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Author Biographies

Hans Dyrnesli, iNANO Center, University of Aarhus, Aarhus 8000, Denmark

Hans Dyrnesli (Ph.D. student) received his M.Sc. in Molecular Biology
in 2015 from the University of Aarhus, Denmark, under the supervision of
Associate Professor Kenneth A. Howard, and is completing his Ph.D. studies
in Nanoscience in 2019 at the Interdisciplinary Nanoscience Center (iNANO),
Aarhus University, Denmark under the supervision of Professor Duncan S.

Gunnar Kl ̈os, iNANO Center, University of Aarhus, Aarhus 8000, Denmark

Gunnar Kl ̈os, currently Ph.D. student in Professor Duncan S. Sutherland’s
group at the iNANO department of Aarhus University, obtained his BSc degree
in physics in 2013 from the Georg-August University Göttingen, where he
also obtained his MSc degree in 2015, specialising in the Physcis of Complex
Systems at the MPI for Dynamics and Self-Organization. His research interest
are chiral plasmonic nano-structures for biosensor applications, using large-
area lithographic techniques and electromagnetic simulations.

Matteo Miola, Carbon Dioxide Activation Center (CADIAC), iNANO Center, University of Aarhus, Aarhus 8000, Denmark

Matteo Miola (Ph.D. student) received his M.Sc. (2015) in Material Science
and Engineering from the University of Padova. He is completing his Ph.D.
studies (2019) in the carbon dioxide activation center (CADIAC) at Aarhus
University on the heterogeneous electrochemical carbon dioxide reduction
under the supervision of Professor Kim Daasbjerg.

Duncan S. Sutherland, iNANO Center, University of Aarhus, Aarhus 8000, Denmark

Duncan S. Sutherland (Professor) received his Ph.D. in 1995 in Physics in
the area of Biomaterials surface science from the University of Bristol. He
spent 10.5 years at the Dept of Applied Physics Chalmers Sweden before
moving his group to the iNANO center at Aarhus University in 2006. His
research interests are in the areas of nanoscale phenomena at biointerfaces,
nanofabrication and nanooptics in the context of biosensors, molecular cell
biology and nanoparticle toxicology


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How to Cite

Dyrnesli, H., Kl ̈os G., Miola, M., & Sutherland, D. S. (2023). Dynamic Modulation of Plasmonic Structures. Journal of Self Assembly and Molecular Electronics, 7(1), 1–22. https://doi.org/10.13052/jsame2245-4551.7.001