Due to their unique optical response resulting from the excitations of surface plasmons, plasmonicnanostructures have received increasing attention. For many applications, the wavelength of surfaceplasmon resonance (SPR) is required to be tunable over a wide spectral range. Recently, mechanicallytunable plasmonic structures have already been demonstrated using solid Au or Ag nanoparticles/nano-patterns as plasmonic materials However, most of them offer a rather small spectral range of tuning. Inthis 2-year project, we will fabricate mechanically tunable plasma nanostructures composed of liquidgallium nanoparticles (Ga-NPs) on elastomeric PDMS substrates. In the first year, Ga-NPs will befabricated on PDMS substrates by two approaches: vacuum evaporation combined with plasma treatmentand chemical synthesis. We will investigate the SPR optical responses of Ga-NPs/PDMS under applyingstress and carry out the simulation of plasmonic characteristics in order to evaluate the relationship betweenthe shape of Ga-NPs and the shift of SPR wavelength. In the second year, we will take a further step tofabricate Ga nano-patterns with various geometries on PDMS substrates and investigate the SPR opticalresponses of Ga-NPs/PDMS under applying stress. Furthermore, SERS properties of Ga nano-pattens/PDMS will also be evaluated. The goal of this project is to develop a highly-tunable plasmonicnanostructure and evaluate their applications in the optoelectronic field.
|Effective start/end date||1/08/17 → 31/07/18|
UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This project contributes towards the following SDG(s):
- Surface plasmon resonance
- Tunable plasmon nanostructures
- Gallium nanoparticles
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