Fractal patterning of nanoparticles on polymer films and their SERS capabilities
American Chemical Society (ACS)
We demonstrate control, via electro-hydrodynamic (EHD) induced polymer instabilities and nanoparticle mobility, of hierarchical fractal arrangements of gold nanoparticles on patterned thin polymer films. The induced changes in the film curvature enhance fractal formation for high and not for low mobility nanoparticles. The high mobility nanoparticles cluster in circular fractal networks on the rims of a hexagonally ordered array of EHD-induced polymer peaks. These arrangements exhibit plasmonic properties for surface-enhanced Raman scattering (SERS) spectroscopy.
Electro-hydrodynamic instabilities , Nanoparticles , Patterning , SERS , Thin polymer films , Surface enhanced Raman scattering
Amarandei, G., O’Dwyer, C., Arshak, A. and Corcoran, D. (2013) 'Fractal Patterning of Nanoparticles on Polymer Films and Their SERS Capabilities', ACS Applied Materials & Interfaces, 5(17), pp. 8655-8662. doi: 10.1021/am402285e
© 2013 American Chemical Society. This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Applied Materials & Interfaces, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://pubs.acs.org/doi/pdf/10.1021/am402285e