Plasmonic Lattice Mode Formed by Ag Nanospheres on Silica Pillar Arrays

Huang, Xiaodan; Lou, Chaogang; Zhang, Hao; Pribat, Didier

doi:10.1007/s11468-018-0797-0

Cited by 11 publications

(12 citation statements)

References 25 publications

(42 reference statements)

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“…Their variations with the incident wavelength are asynchronous. At the wavelength of 540 nm, the diffraction in the air becomes the strongest while the diffraction in the substrate does not reach the maximum [25,28]. When the wavelength becomes longer than the period of the arrays, the first-order diffracted waves in the air disappear, but the first-order diffracted waves in the substrate do not disappear and still bring away the energy around the Ag nanoparticles.…”

Section: Resultsmentioning

confidence: 99%

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Experimentally demonstrating plasmonic lattice mode in periodic Ag nanoparticle arrays on quartz trapezoidal pillars

Huang¹,

Lou²,

Zhang³

2018

J. Phys. D: Appl. Phys.

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A plasmonic lattice mode (PLM) is demonstrated in the periodic Ag nanoparticle arrays, which are fabricated by thermal evaporation and focused-ion beam. In the arrays, each Ag nanoparticle is located on the top of a quartz trapezoidal pillar, which sits on a quartz substrate. Higher quartz trapezoidal pillars can make the transmittance of the structure vary rapidly from the maximum to the minimum in a narrow wavelength band due to the coupling between localized surface plasmonic resonance of Ag nanoparticles and the wavelengthdependent diffraction, while the phenomenon cannot be observed in the structure with lower pillars. FDTD simulation not only gives results which are similar to the experimental ones, but also shows that, when the size of Ag nanoparticles is large, it is possible to form PLM at two different wavelengths. This provides a possible way to extend the application of PLM.

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Section: Resultsmentioning

confidence: 99%

“…Recently, we have theoretically proposed a new method to form PLM by introducing dielectric nanopillar arrays between the metallic nanoparticles and the substrate [25]. In this work, the idea is proved experimentally and the results are compared with those of the simulation.…”

Section: Introductionmentioning

confidence: 99%

Experimentally demonstrating plasmonic lattice mode in periodic Ag nanoparticle arrays on quartz trapezoidal pillars

Huang¹,

Lou²,

Zhang³

2018

J. Phys. D: Appl. Phys.

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“…While for the nanostructure arrays directly lying on silica substrate (i.e. nanostructure arrays without a dielectric cavity), only one relatively broad absorbance peak (FWHM of 27 nm) appears in the absorbance spectrum (blue line in figure 1(b)), along with a weak absorbance amplitude (∼47%), which is derived from a conventional in-plane SLR mode supported by metal nanostructure arrays [32]. This also verifies the weak resonance performance that occurs in traditional in-plane SLRs under normal incidence and asymmetric environment excitation.…”

Section: Spectra and Near-field Distributionsmentioning

confidence: 99%

Dielectric nanocavity-coupled surface lattice resonances for high-efficiency plasmonic sensing

Hu¹,

Tan²,

Bai³

et al. 2021

J. Phys. D: Appl. Phys.

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Surface lattice resonances (SLRs) arising in metal nanostructure arrays have shown tremendous application prospects in the field of plasmonic biosensing. However, these SLRs still suffer from poor optical properties, such as broad linewidth or weak resonance intensity that is especially excited under normal incidence and asymmetric environments, which hinder further practical applications. Herein, we theoretically propose an effective strategy to tailor the SLRs performance of metal nanostructure arrays by introducing a dielectric nanocavity. Originating from the strong interference between the in-plane lattice resonance mode and plasmonic gap cavity modes, the dielectric nanocavity-mediated gold nanostructure arrays exhibit both narrow spectral features with a linewidth of ∼8.2 nm and strong resonance intensity with absorbance amplitude exceeding 95%, even though under normal incidence and asymmetric environment excitation. The simulation results then show that the sensitivity and the figure of merit can reach up to 527.5 nm RIU−1 and 64.3, respectively, as for plasmonic refractive index sensing. This work not only paves the way toward the achievement of effective control of in-plane SLRs, but also provides a potentially attractive candidate for the development of high-efficiency plasmonic sensors.

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“…Periodic metallic nanoparticle arrays have been extensively investigated owing to their excellent optical features [1], and plasmonic lattice modes (PLM) is one of them. The most typical property of PLM is the sharp variation of transmittance or reflectance due to the coupling between localized surface plasmon resonance and diffracted waves [2][3][4]. This characteristic provides a possibility to apply periodic metallic nanoparticle arrays in many fields [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In general, PLM is formed in the homogeneous (or approximately homogeneous) environment [2,9,10] because the inhomogeneous environment would contort the diffraction and weaken the coupling between the diffraction and the resonance of metallic nanoparticles. However, in actual devices, it's uncommon to provide the perfect homogeneous environment for periodic metallic nanoparticle arrays to form PLM.…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Lattice Modes with High Quality Factor in Inhomogeneous Environment

Yang,

Lou

2023

J. Phys.: Conf. Ser.

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Plasmonic lattice modes (PLM) with high quality factor is formed by periodic Au hemisphere arrays on the quartz substrates. The formation of PLM is attributed to the coupling between the localized surface plasmon resonance of Au hemispheres and the diffracted waves inside the substrates rather than the diffracted waves in the air. By changing the hemispheres’ size and the arrays’ period, the PLM wavelength is adjustable. It is also found that the refractive index of the substrates has no effect on the quality factor of PLM. As the refractive index increases, the position of the PLM wavelength has a redshift. While the surroundings where periodic Au hemisphere arrays on the quartz substrates are located affect the quality factor of PLM.

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Plasmonic Lattice Mode Formed by Ag Nanospheres on Silica Pillar Arrays

Abstract: A method to form the plasmonic lattice mode of periodic metallic nanoparticle arrays is presented.

Cited by 11 publications

References 25 publications

Experimentally demonstrating plasmonic lattice mode in periodic Ag nanoparticle arrays on quartz trapezoidal pillars

Experimentally demonstrating plasmonic lattice mode in periodic Ag nanoparticle arrays on quartz trapezoidal pillars

Dielectric nanocavity-coupled surface lattice resonances for high-efficiency plasmonic sensing

Plasmonic Lattice Modes with High Quality Factor in Inhomogeneous Environment

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