Impact of Plasmonic and Dielectric Substrates on the Whispering-Gallery Modes in Self-Assembled Fluorescent Semiconductor Polymer Microspheres

Lin, Zhan‐Hong; Kushida, Soh; Lin, F. C.; Chen, Jhih-Yuan; Singh, Ankit Kumar; Yamamoto, Yohei; Huang, Jer‐Shing

doi:10.1021/acs.nanolett.3c01463

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…Because WGMs are circularly con ned modes at the sphere surface, they are highly sensitive to the surface molecular arrangement. 35 In this article, we demonstrate distinct impacts on WGM resonance arising from topological textures formed on a spherical microcavity. Mechanically and optically robust microspheres with a TB topology are prepared by a self-assembly process in solution.…”

Section: Introductionmentioning

confidence: 81%

Anomalous optical resonance on supramolecularly chiral metaspheres with a swirl topology

Yamamoto,

Oki,

Lin

et al. 2023

Preprint

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The optics of topological structures have progressed, with the expectation of unprecedented spatiotemporal control of light. Micrometre-scale spheres with a mesoscopic molecular order, as represented by liquid crystalline (LC) droplets, occupy a unique position owing to the prominent appearance of a nontrivial topological surface. However, because of the lack of material rigidity, comprehensive studies on the optical impacts arising from topological spherical textures have not yet been achieved. Here, we show mechanically and optically robust chiral polymer microspheres with mesoscopic supramolecular swirl textures that display anomalous optical resonance behaviours. Spatially resolved hyperspectral camera imaging reveals that the whispering gallery modes (WGMs) on the metasphere surface are azimuthally anisotropic and localize along a diagonal path in an asymmetric manner. Reconstructed polarized fluorescence microscope images clearly visualize the swirl arrangement of polymers at the surface, which explains the azimuthally selective WGMs and their wavelength dependency. These findings expand two-dimensional metasurface studies to quasi-three-dimensional non-Euclidean planes and open up the possibility of anisotropic control of light and directional radiation of WGM lasers.

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Section: Introductionmentioning

confidence: 81%

Anomalous optical resonance on supramolecularly chiral metaspheres with a swirl topology

Yamamoto,

Oki,

Lin

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

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Progress and Outlooks in Designing Photonic Biosensor for Virus Detection

Tsalsabila,

Dabur,

Budiarso

et al. 2024

Advanced Optical Materials

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The recent outbreak of coronavirus disease 2019 (COVID‐19) highlights the critical need for rapid, sensitive, and accurate virus detection methods to prevent and manage pandemics. Among the available sensing methods, photonic biosensors have emerged as a forefront technology, characterized by their high sensitivity, minimal analyte requirements, and suitability for miniaturization, making them ideal for point‐of‐care applications in virus detection. This review comprehensively summarizes the recent progress of photonic biosensor technologies, focusing on wavelength shift and luminescence‐based mechanisms. Their operational principles, general configurations, and the challenges associated with these technologies are looked into. An overview of the material developments used in photonic biosensors, encompassing organic, inorganic, and hybrid composite‐based materials is further presented. The discussion extends to surface functionalization using biorecognition elements, including DNA/RNA, aptamers, and antibodies, to craft the specificity of the photonic biosensors for viruses. Ultimately, the importance of a multidisciplinary approach is emphasized in developing new materials architecture, biological receptors, and modifications to photonic methods, aiming to realize better biosensors for virus detection with ultra‐high sensitivity, rapid response, and excellent selectivity.

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Beyond dichotomy: unveiling mode behavior in plasmonic nanodisks

Aray,

Ghavami Sabouri,

Ghaffari-Oskooei

2024

Appl. Opt.

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In our study, we investigate the resonance modes of plasmonic nanodisks through numerical simulations and theoretical analysis. These tiny structures exhibit fascinating behavior, but relying solely on mode localization is not sufficient to classify their supported modes as plasmonic or dielectric. Our goal is to address this challenge by introducing a robust method for identifying each mode’s true nature. Moreover, through analysis of the field distribution, we introduce, to our knowledge, a novel metric designed for application in inverse problems within the realm of machine learning. This metric serves as a robust tool for optimizing the performance of photonic devices.

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Impact of Plasmonic and Dielectric Substrates on the Whispering-Gallery Modes in Self-Assembled Fluorescent Semiconductor Polymer Microspheres

Cited by 3 publications

References 39 publications

Anomalous optical resonance on supramolecularly chiral metaspheres with a swirl topology

Anomalous optical resonance on supramolecularly chiral metaspheres with a swirl topology

Progress and Outlooks in Designing Photonic Biosensor for Virus Detection

Beyond dichotomy: unveiling mode behavior in plasmonic nanodisks

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