Optical Fano Resonance in Self-Assembled Magnetic–Plasmonic Nanostructures

Li, Kai; Xue, Xiongzhi; Sukhotskiy, Viktor; Furlani, Edward P.

doi:10.1021/acs.jpcc.6b09473

Cited by 21 publications

(17 citation statements)

References 42 publications

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“…A PDMS‐based flexible substrate was integrated with metasurfaces to study fundamental physical phenomena such as controllable plasmonic coupling and Fano resonance. [ 100,101 ] Furthermore, tunable metalenses [ 84 ] and plasmonic structural colors with full‐spectrum control [ 102 ] have also been reported.…”

Section: Modulation Methods For Dynamic Dielectric Structural Colorsmentioning

confidence: 99%

Dynamic Structural Colors Based on All‐Dielectric Mie Resonators

Chen

Song

et al. 2021

Advanced Optical Materials

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Structural color, which generates vivid colors via the geometrical arrangement of resonant nanostructures, can enhance the recyclability and mechanical stability of colors; structural colors have been intensively studied in recent years, owing to their high resolution, color purity, and stability compared to colors generated by dyes and pigments. Dielectric materials, which possess a suitably high refractive index and low loss in the visible range, are ideal materials for structural colors. However, the static optical performances of most structural colors impose restrictions on their applicability. This article reviews the fundamental physics of dielectric structural color procedures based on Mie resonance; furthermore, it highlights recent progress in tunable structural colors, focusing on their operation mechanisms and practical applications, including the geometric parameters of the nanostructures, optical parameters of the building materials and environments, and properties of the optical stimuli. This article is concluded by presenting an outlook on the future potential of structural colors, as well as the challenges that remain to be addressed.

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Section: Modulation Methods For Dynamic Dielectric Structural Colorsmentioning

confidence: 99%

Dynamic Structural Colors Based on All‐Dielectric Mie Resonators

Chen

Song

et al. 2021

Advanced Optical Materials

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“…Despite a more complicated optical response for these high-order oligomers, the physics behind the mode hybridization in them is the same as the simpler dimer or trimer systems. Although these higher-order oligomer systems can support more hybridized modes, many of these modes are not optically active under free space light illumination because their high-order multipolar nature makes them very dark [22,26,97,107,108,129,130].…”

Section: In-plane Composite Nanostructuresmentioning

confidence: 99%

Multiresonant plasmonics with spatial mode overlap: overview and outlook

Tali

Zhou

2019

Nanophotonics

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Plasmonic nanostructures can concentrate light and enhance light-matter interactions in the subwavelength domain, which is useful for photodetection, light emission, optical biosensing, and spectroscopy. However, conventional plasmonic devices and systems are typically optimized for the operation in a single wavelength band and thus are not suitable for multiband nanophotonics applications that either prefer nanoplasmonic enhancement of multiphoton processes in a quantum system at multiple resonant wavelengths or require wavelength-multiplexed operations at nanoscale. To overcome the limitations of “single-resonant plasmonics,” we need to develop the strategies to achieve “multiresonant plasmonics” for nanoplasmonic enhancement of light-matter interactions at the same locations in multiple wavelength bands. In this review, we summarize the recent advances in the study of the multiresonant plasmonic systems with spatial mode overlap. In particular, we explain and emphasize the method of “plasmonic mode hybridization” as a general strategy to design and build multiresonant plasmonic systems with spatial mode overlap. By closely assembling multiple plasmonic building blocks into a composite plasmonic system, multiple nonorthogonal elementary plasmonic modes with spectral and spatial mode overlap can strongly couple with each other to form multiple spatially overlapping new hybridized modes at different resonant energies. Multiresonant plasmonic systems can be generally categorized into three types according to the localization characteristics of elementary modes before mode hybridization, and can be based on the optical coupling between: (1) two or more localized modes, (2) localized and delocalized modes, and (3) two or more delocalized modes. Finally, this review provides a discussion about how multiresonant plasmonics with spatial mode overlap can play a unique and significant role in some current and potential applications, such as (1) multiphoton nonlinear optical and upconversion luminescence nanodevices by enabling a simultaneous enhancement of optical excitation and radiation processes at multiple different wavelengths and (2) multiband multimodal optical nanodevices by achieving wavelength multiplexed optical multimodalities at a nanoscale footprint.

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“…Most of the researchers who studied Fano resonance focused on the electric effect reflected in the coupling between the electric dipole and the higher-order electric mode [8,18,[24][25][26]. Only in recent years, Fano resonance generated by the magnetic mode is being studied [27][28][29]. However, the mechanisms of magnetic dipole mode have been discussed in previous studies [30,31].…”

Section: Introductionmentioning

confidence: 99%

Tunable Magnetic Fano Resonances on Au Nanosphere Dimer–Dielectric–Gold Film Sandwiched Structure

et al. 2021

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The Fano resonance demonstrates excellent performance due to its narrow asymmetrical spectral line shape, and its sensitivity to structure and material parameter changes. Compared to conventional Fano resonances, the Fano resonance generated by the magnetic dipole is more advantageous because of its high absorption and low loss. In this study, we propose an Au nanosphere dimer–dielectric–gold film sandwiched structure that supports the magnetic Fano resonance mode. And the Fano resonance can be efficiently tuned from visible to near-infrared wavelength by changing the size of the gold nanospheres and the thickness of the dielectric layer. Different from the single gold nanosphere–dielectric–film structure, the results suggest that the proposed structure is sensitive to the polarization direction of the excitation light. Considering the above characteristics, the proposed structure can be applied in multi-band sensing, surface-enhanced Raman spectroscopy, and dynamically adjustable optical switches.

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Optical Fano Resonance in Self-Assembled Magnetic–Plasmonic Nanostructures

Cited by 21 publications

References 42 publications

Dynamic Structural Colors Based on All‐Dielectric Mie Resonators

Dynamic Structural Colors Based on All‐Dielectric Mie Resonators

Multiresonant plasmonics with spatial mode overlap: overview and outlook

Tunable Magnetic Fano Resonances on Au Nanosphere Dimer–Dielectric–Gold Film Sandwiched Structure

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