Plasmonic Particle Layers and Metasurfaces for Molecular Sensing and Spectroscopy

Mikael Käll Applied Physics, Chalmers University of Technology, Göteborg, Sweden Mikael Svedendahl Applied Physics, Chalmers University of Technology, Göteborg, Sweden Robin Ogier Applied Physics, Chalmers University of Technology, Göteborg, Sweden Martin Wersäll Applied Physics, Chalmers University of Technology, Göteborg, Sweden Aron Hakonen Applied Physics, Chalmers University of Technology, Göteborg, Sweden Si Chen Applied Physics, Chalmers University of Technology, Göteborg, Sweden Yurui Fang Applied Physics, Chalmers University of Technology, Göteborg, Sweden Nils Odenbo Länk Applied Physics, Chalmers University of Technology, Göteborg, Sweden Ruggero Verre Applied Physics, Chalmers University of Technology, Göteborg, Sweden Zhong-Jian Yang Applied Physics, Chalmers University of Technology, Göteborg, Sweden Lei Shao Applied Physics, Chalmers University of Technology, Göteborg, Sweden Tomasz Antosiewicz Applied Physics, Chalmers University of Technology, Göteborg, Sweden Centre of New Technologies, University of Warsaw, Warsaw, Poland Andreas Dahlin Applied Physics, Chalmers University of Technology, Göteborg, Sweden Timur Shegai Applied Physics, Chalmers University of Technology, Göteborg, Sweden Peter Johansson Applied Physics, Chalmers University of Technology, Göteborg, Sweden Natural Sciences, Örebro University, Örebro, Sweden

Over the last decade or so, a large number of plasmon based approaches to molecular analysis that goes beyond traditional surface plasmon resonance (SPR) and surface-enhanced Raman scattering (SERS) methods have been described in the literature, including techniques based on Fano resonances, single particle analysis, metamaterials, chiral structures and new molecular contrast mechanisms. Much of this development is propelled by the ever-increasing needs for more sensitive, rapid, cost-effective and/or precise analysis of various disease markers in the health care sector. This presentation will describe several recent molecular analysis experiments on plasmonic structures that range from large arrays of individual nanoparticles that can be probed by hyperspectral imaging techniques [1] over particle layers that exhibit anisotropic diffuse scattering suitable for facile self-referenced sensing measurements [2] to 2D metamaterials with well-defined optical phase behavior suitable for interferometric analysis [3]. The possibility of utilizing chiral nanostructures [4] for molecular analysis and the development of effective SERS substrates will also be discussed.

[1] S. Chen, M. Svedendahl, T.J. Antosiewicz, M. Käll, Plasmon-enhanced Enzyme-linked Immunosorbent Assay on Large Arrays of Individual Particles Made by Electron Beam Lithography, ACS Nano 7, 8824-32 (2013).

[2] M. Wersäll, R. Verre, M. Svedendahl, P. Johansson, M. Käll, T. Shegai, Nanoplasmonic Antennas for Self-referenced Refractometric Molecular Analysis, J. Phys. Chem. C 36, 21075-80 (2014).

[3] M. Svedendahl, R. Verre, M. Käll, Refractometric Biosensing Based on Optical Phase Flips in Sparse and Short-range-ordered Nanoplasmonic Layers, Light: Science & Applications 3, doi:10.1038/lsa.2014.101

[4] R. Ogier, Y.R. Fang, M. Svedendahl, P. Johansson, M. Käll, Macroscopic Layers of Chiral Plasmonic Nanoparticle Oligomers from Colloidal Lithography, ACS Photonics 1, 1074-81 (2014).

kall@chalmers.se