Light-driven tunable dual-band plasmonic absorber using liquid-crystal-coated asymmetric nanodisk array

Yanhui Zhao; Qingzhen Hao; Yi Ma; Mengqian Lu; Bingxin Zhang; Michael Lapsley; Iam Choon Khoo; Tony Jun Huang

doi:10.1063/1.3681808

Light-driven tunable dual-band plasmonic absorber using liquid-crystal-coated asymmetric nanodisk array

Yanhui Zhao
, Qingzhen Hao
, Yi Ma
, Mengqian Lu
, Bingxin Zhang
, Michael Lapsley
, Iam Choon Khoo
, Tony Jun Huang

Electrical Engineering

Research output: Contribution to journal › Article › peer-review

78 Scopus citations

Abstract

We experimentally demonstrated a light-driven reconfigurable near perfect plasmonic absorber working at dual frequencies in infrared range. By employing nanodisks with different sizes in certain arrangement, near perfect absorption of incident electromagnetic waves can be achieved for different working frequencies due to the resonance between the incident light and the nanodisk of different sizes. We showed that optically induced changes in the dielectric constant of the adjacent liquid crystal layer is an effective means to tune the absorption bands of an asymmetric gold nanodisk array. Our liquid crystal based infrared plasmonic absorber can be tuned by using visible light in real time. A tunable range of 25 nm has been confirmed by both simulation and experiment.

Original language	English (US)
Article number	053119
Journal	Applied Physics Letters
Volume	100
Issue number	5
DOIs	https://doi.org/10.1063/1.3681808
State	Published - Jan 30 2012

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.3681808

Cite this

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title = "Light-driven tunable dual-band plasmonic absorber using liquid-crystal-coated asymmetric nanodisk array",

abstract = "We experimentally demonstrated a light-driven reconfigurable near perfect plasmonic absorber working at dual frequencies in infrared range. By employing nanodisks with different sizes in certain arrangement, near perfect absorption of incident electromagnetic waves can be achieved for different working frequencies due to the resonance between the incident light and the nanodisk of different sizes. We showed that optically induced changes in the dielectric constant of the adjacent liquid crystal layer is an effective means to tune the absorption bands of an asymmetric gold nanodisk array. Our liquid crystal based infrared plasmonic absorber can be tuned by using visible light in real time. A tunable range of 25 nm has been confirmed by both simulation and experiment.",

author = "Yanhui Zhao and Qingzhen Hao and Yi Ma and Mengqian Lu and Bingxin Zhang and Michael Lapsley and Khoo, \{Iam Choon\} and \{Jun Huang\}, Tony",

note = "Funding Information: We gratefully acknowledge the financial support from Air Force Office of Scientific Research (AFOSR), National Science Foundation (NSF). Some components of this work were conducted at the Penn State node of the NSF-funded National Nanotechnology Infrastructure Network (NNIN). ",

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AU - Zhao, Yanhui

AU - Hao, Qingzhen

AU - Ma, Yi

AU - Lu, Mengqian

AU - Zhang, Bingxin

AU - Lapsley, Michael

AU - Khoo, Iam Choon

AU - Jun Huang, Tony

N1 - Funding Information: We gratefully acknowledge the financial support from Air Force Office of Scientific Research (AFOSR), National Science Foundation (NSF). Some components of this work were conducted at the Penn State node of the NSF-funded National Nanotechnology Infrastructure Network (NNIN).

PY - 2012/1/30

Y1 - 2012/1/30

N2 - We experimentally demonstrated a light-driven reconfigurable near perfect plasmonic absorber working at dual frequencies in infrared range. By employing nanodisks with different sizes in certain arrangement, near perfect absorption of incident electromagnetic waves can be achieved for different working frequencies due to the resonance between the incident light and the nanodisk of different sizes. We showed that optically induced changes in the dielectric constant of the adjacent liquid crystal layer is an effective means to tune the absorption bands of an asymmetric gold nanodisk array. Our liquid crystal based infrared plasmonic absorber can be tuned by using visible light in real time. A tunable range of 25 nm has been confirmed by both simulation and experiment.

AB - We experimentally demonstrated a light-driven reconfigurable near perfect plasmonic absorber working at dual frequencies in infrared range. By employing nanodisks with different sizes in certain arrangement, near perfect absorption of incident electromagnetic waves can be achieved for different working frequencies due to the resonance between the incident light and the nanodisk of different sizes. We showed that optically induced changes in the dielectric constant of the adjacent liquid crystal layer is an effective means to tune the absorption bands of an asymmetric gold nanodisk array. Our liquid crystal based infrared plasmonic absorber can be tuned by using visible light in real time. A tunable range of 25 nm has been confirmed by both simulation and experiment.

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IS - 5

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ER -

Light-driven tunable dual-band plasmonic absorber using liquid-crystal-coated asymmetric nanodisk array

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