Duty cycle dependency of the optical transmission spectrum in an ultrathin nanostructured Ag film

Ye, M.; Hu, Xianqiao; Sun, Libin; Shi, Bin; Xu, Yang; Wang, L.S.; Zhao, Jing; Wu, Yihui; Yang, Shuo; Tai, Renzhong; Jiang, Jianjun; Zhang, D.X.

doi:10.1016/j.jallcom.2014.09.202

Cited by 9 publications

(5 citation statements)

References 21 publications

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“…4a). The red-shifts of dips can be ascribed to the reduced air hole duty ratio in the structure and the intensified hybridization coupling of plasmon modes due to the reduced distance between adjacent Au spacers [23,35]. Moreover, the dip at λ=780 nm becomes more and more clear but the dip at λ 4 =749 nm becomes inconspicuous gradually with the increase of width, indicating another interaction or energy transfer occurring.…”

Section: Resultsmentioning

confidence: 99%

Multi-Band High Refractive Index Susceptibility of Plasmonic Structures with Network-Type Metasurface

Liu

et al. 2015

Plasmonics

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We theoretically propose a simple plasmonic structure with network-type metasurface consisting of double-layer metal-dielectric network-type metasurface on the two-layer dielectric films. Multiple reflection bands with minimum full width at half maximum of 3 nm are achieved in the visible and near-infrared regions due to the excitation and hybridized coupling of localized surface plasmons, photonic mode, and optical cavity mode. The plasmonic structure with network-type metasurface also shows highly tunable refractive index sensing performance. The maximum sensitivity to the refractive index (RI) change reaches to 596 nm/RIU (RIU: refractive index unit). The figure of merit can reach as high as 68.57. These results show that the plasmonic structure with networktype metasurface could pave a new way for the highperformance multi-band devices such as sensors and filters.

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Section: Resultsmentioning

confidence: 99%

Multi-Band High Refractive Index Susceptibility of Plasmonic Structures with Network-Type Metasurface

Liu

et al. 2015

Plasmonics

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“…The enclosed color gamut was enlarged with increasing thickness. Figure 6 shows the simulated transmission spectra with period 360 nm and RDIS = 0.5 on selected five thicknesses, i.e., 20,25,30,35, and 40 nm, metallic Ag films. It is found that the thicker the film, the better the color purity, but the lower the transmission.…”

Section: Resultsmentioning

confidence: 99%

“…A peak transmission up to 60% has been recently achieved by using the appropriate period and thickness for the square-lattice nanohole arrays on a single ultrathin Ag film [23]. In our previous studies [22][23][24][25], effects of film thickness, period, and duty cycle (the ratio of Ag width to the period) on color filtering with one-dimensional (1D) [22,24,25] Ag nanogratings and two-dimensional (2D) Ag nanohole arrays [23] were systematically investigated. However, another critical parameter for imaging applications, color purity, has never been interrogated in these plasmonic SCFs [26].…”

Section: Introductionmentioning

confidence: 99%

Effect of relative nanohole position on colour purity of ultrathin plasmonic subtractive colour filters

Sun

Zeng

et al. 2015

Nanotechnology

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Plasmonic subtractive color filters through patterning periodic nanostructures on ultrathin Ag films deposited on a glass substrate, exhibiting good durability, simple fabrication, and flexible color tunability, have attracted considerable attention due to their tremendous potential applications. While previous studies have mainly focused on their extraordinary physical mechanisms, color purity, which is another key parameter for high quality imaging applications, has been much less investigated. In this work, we demonstrate that the relative position of nanoholes patterned on ultrathin Ag films can largely affect the color purity of plasmonic subtractive color filters. The calculated results agree reasonably well with the experimental data, revealing that the purity of subtractive colors can be improved by changing the nanohole arrays from square lattice to triangular lattice without reducing transmission at visible frequencies. In addition, underlying mechanisms are clarified by systematically analyzing the dominant valley in transmission spectra.

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“…Authors have investigated the use of different metals (Au [2], Ag [3][4][5][6][7][8], Al [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]) and various aperture forms such as lines [4,5,10,24], circles [7, 9, 11, 14-16, 21, 25], triangles [12] and crosses [17,18,23]. Alternatively, a similar filtering behaviour can also be achieved by the formation of subwavelength metal islands [8,20].…”

Section: Introductionmentioning

confidence: 99%

“…Since the discovery of the phenomenon of 'extraordinary optical transmission' (EOT) by Ebbesen et al [1] in 1998, the use of subwavelength metal nanoapertures as colour filters has been discussed in numerous publications. Authors have investigated the use of different metals (Au [2], Ag [3][4][5][6][7][8], Al [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25]) and various aperture forms such as lines [4,5,10,24], circles [7, 9, 11, 14-16, 21, 25], triangles [12] and crosses [17,18,23]. Alternatively, a similar filtering behaviour can also be achieved by the formation of subwavelength metal islands [8,20].…”

Section: Introductionmentioning

confidence: 99%

Large area manufacturing of plasmonic colour filters using substrate conformal imprint lithography

et al. 2017

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This work presents the large area fabrication of plasmonic colour filters consisting of subwavelength apertures in aluminium films of different thicknesses. Wafer-scale pattern transfer was realized by a soft lithography technique (substrate conformal imprint lithography). The fabricated colour filters have an active area of up to 145 cm2 which presents a considerable increase compared to previously published results. In addition to experimental investigations, simulations of the transmission behaviour were performed using a rigorous electromagnetic field solver based on an extended RCWA approach. Furthermore, the use of a spin-coated cover layer consisting of the UV-curable hybrid polymer OrmoComp® instead of often applied PECVD-SiO2 was investigated.

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Duty cycle dependency of the optical transmission spectrum in an ultrathin nanostructured Ag film

Cited by 9 publications

References 21 publications

Multi-Band High Refractive Index Susceptibility of Plasmonic Structures with Network-Type Metasurface

Multi-Band High Refractive Index Susceptibility of Plasmonic Structures with Network-Type Metasurface

Effect of relative nanohole position on colour purity of ultrathin plasmonic subtractive colour filters

Large area manufacturing of plasmonic colour filters using substrate conformal imprint lithography

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