Three-dimensional plasmonic nanoclusters driven by co-assembly of thermo-plasmonic nanoparticles and colloidal quantum dots
SCIE
SCOPUS
- Title
- Three-dimensional plasmonic nanoclusters driven by co-assembly of thermo-plasmonic nanoparticles and colloidal quantum dots
- Authors
- Kim, Won-Geun; Devaraj, Vasanthan; Yang, Younghwan; Lee, Jong-Min; Kim, Ji Tae; Oh, Jin-Woo; Rho, Junsuk
- Date Issued
- 2022-01
- Publisher
- Royal Society of Chemistry
- Abstract
- © 2022 The Royal Society of Chemistry.Metallic nanoparticles that support localized surface plasmons have emerged as fundamental iconic building blocks for nanoscale photonics. Self-assembled clustering of plasmonic nanoparticles with controlled near-field interactions offers an interesting novel route to manipulate the electromagnetic fields at a subwavelength scale. Various bottom-up, self-assembly manners have been successfully devised to build plasmonic nanoparticle clusters displaying attractive optical properties. However, the incapability to configure on-demand architectures limits its practical reliability uses for scalable nanophotonic devices. Furthermore, a critical challenge has been addressing the accurate positioning of functional nanoparticles, including catalytic nanoparticles, dielectric nanoparticles, and quantum dots (QDs) in the clustered plasmonic hotspots. This work proposes a micropipette-based self-assembly method to fabricate three-dimensional architectures composed of colloidal clusters. The heterogeneous colloidal clusters comprising metallic nanoparticles and QDs are fabricated in one step by the micropipette-based self-assembly method. A plasmonic clustered pillar embedding QDs exhibited excellent photoluminescence characteristics compared to a collapsed pillar. The experimental and theoretical demonstration of the localized surface plasmon resonance and thermo-plasmonic properties of the colloidal clusters was performed.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/117944
- DOI
- 10.1039/d2nr03737h
- ISSN
- 2040-3364
- Article Type
- Article
- Citation
- Nanoscale, vol. 14, no. 44, page. 16450 - 16457, 2022-01
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