Opto-Electronic Engineering, Volume. 51, Issue 6, 240048-1(2024)

Preparation and optical characterization of large-area self-assembled gold nanoparticle superlattice films

Xin Huang1... Zuoyan Shi1, Mingxia Song1, Ying Yu2,* and Shaoding Liu1,** |Show fewer author(s)
Author Affiliations
  • 1Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
  • 2College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi 030024, China
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    Self-assembly of noble metal nanoparticles into superlattices can couple with plasmonic modes and light fields, holding significant promise in enhanced spectroscopy and sensing applications. However, controlling the number of layers in these self-assembled superlattice films is challenging, and small sample sizes limit their potential applications. In this study, based on a wetting-enhanced interfacial self-assembly method, we demonstrate the rapid and large-scale fabrication of monolayer densely packed nanoparticle films. Additionally, a layer-by-layer stacking method is employed to fabricate large-area, uniformly distributed gold nanoparticle superlattice films with different numbers of layers. Both experimental and computational transmission/reflection spectra indicate that the prepared superlattice samples effectively excite plasmonic modes, and higher-order plasmonic modes can also be efficiently excited with increasing superlattice layers. Moreover, adjusting the nanoparticle size enables effective modulation of the resonance peak positions of plasmonic modes. These findings provide an effective approach for the large-scale fabrication of high-quality nanoparticle superlattice films, holding promise for the design of high-performance micro/nano photonic devices.

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    Xin Huang, Zuoyan Shi, Mingxia Song, Ying Yu, Shaoding Liu. Preparation and optical characterization of large-area self-assembled gold nanoparticle superlattice films[J]. Opto-Electronic Engineering, 2024, 51(6): 240048-1

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    Paper Information

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    Received: Mar. 3, 2024

    Accepted: Apr. 2, 2024

    Published Online: Oct. 21, 2024

    The Author Email: Yu Ying (虞应), Liu Shaoding (刘绍鼎)

    DOI:10.12086/oee.2024.240048

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