Extraordinary optical transmission for TE wave through metallic sub-wavelength grating with slits filled with dielectric

Gao, Hua; Zhang, Zheng; Dong, Aiguo; Fan, Zhenjun

doi:10.1016/j.ijleo.2014.08.056

Cited by 12 publications

(2 citation statements)

References 21 publications

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“…The HSQ templates contained in the wanted Ag film still remained on the substrate as indicated by the black triangle dotted line boxes in figure 4(c) (confirmed by the energy dispersive of x rays as shown in figure S1(b)). Actually, this kind of dielectric filling (the residual HSQ templates) is useful for some optical applications [33][34][35]. It should be pointed out that the residual exposed optically transparent HSQ triangle templates could be retained in some specific optical applications or can be removed by CHF 3 gas etching to realize an all dry process [36].…”

Section: Resultsmentioning

confidence: 99%

Fabrication of single-nanometer metallic gaps via spontaneous nanoscale dewetting

et al. 2021

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Ultrasmall metallic nanogaps are of great significance for wide applications in various nanodevices. However, it is challenging to fabricate ultrasmall metallic nanogaps by using common lithographic methods due to the limited resolution. In this work, we establish an effective approach for successful formation of ultrasmall metallic nanogaps based on the spontaneous nanoscale dewetting effect during metal deposition. By varying the initial opening size of the exposed resist template, the influence of dewetting behavior could be adjusted and tiny metallic nanogaps can be obtained. We demonstrate that this method is effective to fabricate diverse sub-10 nm gaps in silver nanostructures. Based on this fabrication concept, even sub-5 nm metallic gaps were obtained. SERS measurements were performed to show the molecular detection capability of the fabricated Ag nanogaps. This approach is a promising candidate for sub-10 nm metallic gaps fabrication, thus possessing potential applications in nanoelectronics, nanoplasmonics, and nano-optoelectronics.

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Section: Resultsmentioning

confidence: 99%

Fabrication of single-nanometer metallic gaps via spontaneous nanoscale dewetting

et al. 2021

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“…For the TE case, however, creation of subtractive colors via such 1D nanostructures poses two paramount issues: firstly, achieving high transmission across a broad spectral range, and, secondly, inhibition of transmission in the proximity of specific wavelengths. The former requirement might be satisfied by filling up the slits of the NW array with a dielectric in order to increase the cutoff wavelength and support cavity modes in the slits as previously reported 31 32 , while the latter can be potentially addressed by virtue of other non-plasmonic phenomena, like the guided-wave resonance (GMR) 33 . Such 1D NW array for mitigating those two issues can enable enhanced transmission for both TE and TM polarizations, providing independent control of the locations in relation to suppressed transmissions for the two polarizations.…”

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confidence: 99%

Polarization-tuned Dynamic Color Filters Incorporating a Dielectric-loaded Aluminum Nanowire Array

Shrestha

Lee

Kim

et al. 2015

Sci Rep

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Nanostructured spectral filters enabling dynamic color-tuning are saliently attractive for implementing ultra-compact color displays and imaging devices. Realization of polarization-induced dynamic color-tuning via one-dimensional periodic nanostructures is highly challenging due to the absence of plasmonic resonances for transverse-electric polarization. Here we demonstrate highly efficient dynamic subtractive color filters incorporating a dielectric-loaded aluminum nanowire array, providing a continuum of customized color according to the incident polarization. Dynamic color filtering was realized relying on selective suppression in transmission spectra via plasmonic resonance at a metal-dielectric interface and guided-mode resonance for a metal-clad dielectric waveguide, each occurring at their characteristic wavelengths for transverse-magnetic and electric polarizations, respectively. A broad palette of colors, including cyan, magenta, and yellow, has been attained with high transmission beyond 80%, by tailoring the period of the nanowire array and the incident polarization. Thanks to low cost, high durability, and mass producibility of the aluminum adopted for the proposed devices, they are anticipated to be diversely applied to color displays, holographic imaging, information encoding, and anti-counterfeiting.

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Role of higher order plasmonic modes in one-dimensional nanogratings

2019

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Extraordinary optical transmission for TE wave through metallic sub-wavelength grating with slits filled with dielectric

Cited by 12 publications

References 21 publications

Fabrication of single-nanometer metallic gaps via spontaneous nanoscale dewetting

Fabrication of single-nanometer metallic gaps via spontaneous nanoscale dewetting

Polarization-tuned Dynamic Color Filters Incorporating a Dielectric-loaded Aluminum Nanowire Array

Role of higher order plasmonic modes in one-dimensional nanogratings

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