Plasmonic Assemblies

Fascinating physical properties can emerge from joining functional nanoparticles into assemblies with tailored shapes and symmetries. The occurrence of plasmonic hotspots in gold nanoparticle clusters is an example of a feature that is not found in particles kept separate from each other. Signal enhancements exceeding the ones achieved with single particles by several orders in magnitude are found if plasmonic “colloidal molecules” are used as substrates in surface -enhanced spectroscopies. In the course of further advancements, more applications in sensing and nanophotonics can be expected.

Work Packages

Synthesis of metal nanoparticles
Surface coating
Nanoparticle assembly
Morphologies studies
Investigation of plasmonic properties

Publications

"Organized Plasmonic Clusters with High Coordination Number and Extraordinary Enhancement in Surface-Enhanced Raman Scattering (SERS)”
Pazos-Perez, N.; Wagner, C.S.; Romo-Herrera, J.M.; Liz-Marzán, L.M.; García de Abajo, F.J.; Wittemann, A.; Fery, A.; Alvarez-Puebla, R. Angew. Chem. 2012, 124, 12860.
Publisher

Project Funding

We gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft (DFG) within SFB 1214/A10.