A tunable color filter using a hybrid metasurface composed of ZnO nanopillars and Ag nanoholes

Wang, Yicheng; Huang, Wei‐Kai; Lin, Yu‐Sheng; Yang, Bo‐Ru

doi:10.1039/d2na00286h

Cited by 16 publications

(8 citation statements)

References 51 publications

(98 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, aluminum is favored in existing CMOS processes, making it the most suitable candidate for UV applications. Two-dimensional (2D) nanohole arrays [22][23][24][25][26][27] have been used in various fields and bands. Al nanohole arrays have been designed to operate as bandpass filters in the 200-400 nm waveband, and EOT on these simple metallic nanohole arrays has been achieved from 10% to 30% based on the mechanism of surface plasmon resonance (SPR).…”

Section: Introductionmentioning

confidence: 99%

Transmission enhancement in coupled nanohole and nanodisk arrays for solar blind UV filter

Chen,

Guo,

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

Extraordinary optical transmission (EOT) based on metallic nanohole array has great potential for optical filtering, owing to its spectral selectivity and structure-dependent tunability. However the transmittance of EOT is relatively low owing to the large loss of the metal film, particularly in the UV waveband. Herein, we propose a high transmission narrowband ultraviolet filter based on aluminum compound nanostructures on a UV-grade fused silica substrate. These compound nanostructures are consisted of periodic nanodisk and nanohole arrays with the same period in a staggered rectangular arrangement. Numerical simulations using the finite-difference time-domain (FDTD) method have shown that the compound structures exhibit high transmittance of over 70% and a narrower bandwidth of less than 50nm in the 200-300nm spectral region compared with the conventionally EOT of pure metallic nanohole arrays. Moreover, a broad suppression in the wavelength ranges of 300 to 1100nm was achieved. The enhanced performance is attributed to the coupling between the surface plasmon polariton (SPP) of nanohole arrays and the localized surface plasmon resonance (LSPR) of nanodisk arrays. The compound coupled nanostructures can be used in solar-blind ultraviolet detectors and the enhancement mechanism has potential for use in other spectral regions.

show abstract

Section: Introductionmentioning

confidence: 99%

Transmission enhancement in coupled nanohole and nanodisk arrays for solar blind UV filter

Chen,

Guo,

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…The incident electromagnetic wave will be coupled and interacted with metamaterial to show the negative refractive index [ 3 , 4 ], wavefront manipulation, perfect absorption, and phase modulation, which are widely used in many optoelectronics applications [ 5 ]. These advantages prompt it to be extensively adapted for visible light [ 6 , 7 , 8 ], infrared (IR) light [ 9 , 10 , 11 , 12 , 13 , 14 ], terahertz (THz) frequency [ 15 , 16 , 17 , 18 ], etc. Therefore, metamaterials have been reported in many types of research and investigations in couplers [ 19 ], antennas [ 20 , 21 , 22 ], metalens [ 23 , 24 ], programmable logic devices [ 25 , 26 , 27 ], and sensors [ 28 , 29 , 30 ] fields.…”

Section: Introductionmentioning

confidence: 99%

Tunable MEMS-Based Terahertz Metamaterial for Pressure Sensing Application

Lai

et al. 2023

Micromachines

Self Cite

View full text Add to dashboard Cite

In this study, a tunable terahertz (THz) metamaterial using the micro-electro-mechanical system (MEMS) technique is proposed to demonstrate pressure sensing application. This MEMS-based tunable metamaterial (MTM) structure is composed of gold (Au) split-ring resonators (SRRs) on patterned silicon (Si) substrate with through Si via (TSV). SRR is designed as a cantilever on the TSV structure. When the airflow passes through the TSV from bottom to up and then bends the SRR cantilever, the SRR cantilever will bend upward. The electromagnetic responses of MTM show the tunability and polarization-dependent characteristics by bending the SRR cantilever. The resonances can both be blue-shifted from 0.721 THz to 0.796 THz with a tuning range of 0.075 THz in transverse magnetic (TM) mode and from 0.805 THz to 0.945 THz with a tuning range of 0.140 THz in transverse electric (TE) mode by changing the angle of SRR cantilever from 10° to 45°. These results provide the potential applications and possibilities of MTM design for use in pressure and flow rate sensors.

show abstract

“…Metamaterial has extraordinary electromagnetic characteristics that originates from the specific geometric structure arranged artificially and its subwavelength configuration [1]. By changing the geometrical parameters and material structures of metamaterial, a strong electromagnetic response covering the range from visible light [2][3][4][5], infrared (IR) wave [6][7][8][9] to terahertz (THz) frequency [10][11][12][13] can be realized. It has been proved that metamaterial can achieve unique optical characteristics, such as negative refractive index [14], strong transmission [15], perfect absorption [16][17][18][19], and holographic imaging [20], due to its exotic permittivity and permeability.…”

Section: Introductionmentioning

confidence: 99%

Tunable MEMS-based metamaterial nanograting coupler for C-band optical communication application

Lin

2023

Discover Nano

Self Cite

View full text Add to dashboard Cite

A tunable metamaterial nanograting coupler (MNC) is presented that is composed of a one-dimensional surface nanograting coupler with a bottom reflector and the metamaterial atop. For a single nanograting coupler, by introducing a reflector and optimizing nanograting parameters, the spatial coupling efficiency exceeds 97% around near-infrared wavelength of 1.43 μm. The metamaterial can be tuned by using micro-electro-mechanical system (MEMS) technique. The relative height or lateral offset between metamaterial and coupling nanograting can be controlled, that the light-emitting efficiency can be separated into two different directions. In addition, the coupling efficiency is as high as 91% at the optical C-band communication window. Therefore, the proposed MEMS-based MNC not only has the possibility of coupling optical fibers with high-density integrated optoelectronic chips, but also has potential application prospects in light path switching, variable optical attenuation, and optical switch.

show abstract

A tunable color filter using a hybrid metasurface composed of ZnO nanopillars and Ag nanoholes

Abstract: We propose the designs of symmetrical and asymmetrical tunable color filters (TCFs) by using hybrid metasurface nanostructures in the visible wavelength range. They are composed of circular zinc oxide (ZnO)...

Cited by 16 publications

References 51 publications

Transmission enhancement in coupled nanohole and nanodisk arrays for solar blind UV filter

Transmission enhancement in coupled nanohole and nanodisk arrays for solar blind UV filter

Tunable MEMS-Based Terahertz Metamaterial for Pressure Sensing Application

Tunable MEMS-based metamaterial nanograting coupler for C-band optical communication application

Contact Info

Product

Resources

About