Due to their unique optical properties, plasmonic nanostructures have received much attention in the last decade. However, once the plasmonic device is fabricated with a given set of dimensions, its optical response is not tunable and also cannot be adjusted in a reversible manner, which limits their perspective applications. Therefore, much research has been conducted to dynamic control of optical characterizations of plasmonic nanostructures by various methods, such as mechanical stress and change of ambient temperature. However, most of them offer a rather small spectral range of tuning and use Au or Ag nanoparticles/nano-patterns as plasmonic materials, which is not cost-effective.The goal of this project is to develop a novel, simple and cost-effective process (lithography-free) for fabrication of highly tunable and reversible plasmonic nanostructures based on self-assembled gallium nanoparticles on elastomer films.In this project, first, self-assembly deposition of gallium nanoparticles with a nano-gap spacing on flexible elastomer substrates will be developed via physical vapor deposition technique and surface modification of substrate surface. By adjusting parameters of deposition and modification processes, it is expected that self-assemble gallium nanoparticles would be embedded into PDMS and thus improve the adhesion between particles and substrate. In addition to investigate the optical responses of the plasmonic nanostructures under applying mechanical stress, the cycling test of optical tenability and reversibility will be carried out in order to realize the stability and durability of the plasmonic nanostructure. Finally, the application of this plasmonic nanostructure will be evaluated in tunable colorfilters. The objective of this project is to make a highly tunable (∆λ ≥ 300 nm) and reversible (wavelength shift error, ∆λ/λ, < 5%, after cycled 100 times) plasmonic color filter based on self-assembled gallium nanoparticles.
Status | Finished |
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Effective start/end date | 1/08/21 → 31/10/22 |
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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):