| 초록 |
Plasmonic metamolecules has numerous interesting properties, which has attracted many researcher’s attentions. Controlling light – matter interaction is a key concept to produce metamaterials such as plasmonic cloaking, superlenses, and enhanced nonlinear optical properties. Here, we report a facile synthetic route to produce Raspberry-like TPM@Au metamolecules (RMM) that has the ability to control electric and magnetic dipole. These both particles can interact each other owing to electrostatic interaction, because of their surface charge differences. TPM@Au metamolecules exhibit unusually broad extinction spectra in the visible and near-IR region. A series of synthesis with varying structure parameters, such as the size of core emulsion, showed that the close packing of a large number of gold nanoparticles in Raspberry-like metamolecules is responsible for the unique broaden extinction spectra observed our experiment owing to surface plasmonic resonance. |
