Symposium 1: Functional Metastructures and Nanomaterials: Properties, Fabrication and Modeling X
14:00 Invited talk : Functional Assemblies with Plasmonic Semiconductor and Metal Nanoparticles
Ludwig Maximilians University (Germany) In this talk several examples of functional assemblies of plasmonic nanoparticles based on metal and vacancy-doped semiconductors will be presented. It will be shown how various self-assembly approaches can be used to control the spatial positioning and self-organization of different plasmonic building-blocks and how this grants access to the investigation of interesting optical effects.
14:20 Invited talk : Chiral plasmonic nanostructures induced by PCR assembly
Liguang Xu, Hua Kuang, Chuanlai Xu
Jiangnan University (China) Plasmon induced circular dichroism (CD) response in the region of visible light is an emerging scientific subject. Although great progress has made in novel chiral nanostructure design and preparation, there are still significant difficulties in scaling-up preparation and real applications. Herein, we report a powerful tool of polymerase chain reaction (PCR) to assembly nanoparticles. CD responses of nanostructures can be manipulated on both intensity and wavelength in the range of 400 nm to 700 nm.
14:40 : Coupling single fluorescent molecules to plasmonic antennas with DNA
Mickael Busson (1),Vincent Maillard (1),Alexis Devilez (2),Brian Stout (2),Nicolas Bonod (2),Jerome Wenger (2),Sebastien Bidault (1)
(1)ESPCI ParisTech (France) , (2)Aix-Marseille University (France) We use DNA self-assembly to introduce reproducibly single emitters in the center of plasmonic antennas. A nanometer control of the emitter position allows us to enhance its spontaneous decay rate by two orders of magnitude. The effective quantum yield and emission rate of these nanostructures can be optimized by increasing the gold particle diameters. Furthermore, a control over the excitation polarization allows us to select emitters whose transition dipole is preferentially parallel to the axis of the dimer antenna.