Engineering surface lattice resonance of elliptical gold nanodisk array for enhanced strain sensing

Kai Hao Chang; Jiunn Shouh Cheng; Tsan Wen Lu; Po Tsung Lee

doi:10.1364/OE.26.033215

Engineering surface lattice resonance of elliptical gold nanodisk array for enhanced strain sensing

Kai Hao Chang, Jiunn Shouh Cheng, Tsan Wen Lu, Po Tsung Lee^*

^*Corresponding author for this work

Department of Photonics

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

18 Scopus citations

Abstract

We demonstrate an elliptical gold nanodisk array (GNA) for engineering the spectral profile of surface lattice resonance (SLR). The nanodisk’s shape has a great impact on SLR. A small linewidth of 20 nm at an aspect ratio of 1.17 and a large wavelength tuning of 64 nm within 4% strain via different orientations and polarizations is achieved experimentally. The enhanced wavelength response of 6.93 nm per 1% strain variation for elliptical GNA is 2.4 times better than that for general circular GNA. Furthermore, figure of merit of strain sensing for elliptical GNA approaches 5.7 times greater than that for circular GNA.

Original language	English
Pages (from-to)	33215-33225
Number of pages	11
Journal	Optics Express
Volume	26
Issue number	25
DOIs	https://doi.org/10.1364/OE.26.033215
State	Published - 10 Dec 2018

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title = "Engineering surface lattice resonance of elliptical gold nanodisk array for enhanced strain sensing",

abstract = "We demonstrate an elliptical gold nanodisk array (GNA) for engineering the spectral profile of surface lattice resonance (SLR). The nanodisk{\textquoteright}s shape has a great impact on SLR. A small linewidth of 20 nm at an aspect ratio of 1.17 and a large wavelength tuning of 64 nm within 4% strain via different orientations and polarizations is achieved experimentally. The enhanced wavelength response of 6.93 nm per 1% strain variation for elliptical GNA is 2.4 times better than that for general circular GNA. Furthermore, figure of merit of strain sensing for elliptical GNA approaches 5.7 times greater than that for circular GNA.",

author = "Chang, {Kai Hao} and Cheng, {Jiunn Shouh} and Lu, {Tsan Wen} and Lee, {Po Tsung}",

note = "Publisher Copyright: {\textcopyright} 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.",

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AU - Chang, Kai Hao

AU - Cheng, Jiunn Shouh

AU - Lu, Tsan Wen

AU - Lee, Po Tsung

PY - 2018/12/10

Y1 - 2018/12/10

N2 - We demonstrate an elliptical gold nanodisk array (GNA) for engineering the spectral profile of surface lattice resonance (SLR). The nanodisk’s shape has a great impact on SLR. A small linewidth of 20 nm at an aspect ratio of 1.17 and a large wavelength tuning of 64 nm within 4% strain via different orientations and polarizations is achieved experimentally. The enhanced wavelength response of 6.93 nm per 1% strain variation for elliptical GNA is 2.4 times better than that for general circular GNA. Furthermore, figure of merit of strain sensing for elliptical GNA approaches 5.7 times greater than that for circular GNA.

AB - We demonstrate an elliptical gold nanodisk array (GNA) for engineering the spectral profile of surface lattice resonance (SLR). The nanodisk’s shape has a great impact on SLR. A small linewidth of 20 nm at an aspect ratio of 1.17 and a large wavelength tuning of 64 nm within 4% strain via different orientations and polarizations is achieved experimentally. The enhanced wavelength response of 6.93 nm per 1% strain variation for elliptical GNA is 2.4 times better than that for general circular GNA. Furthermore, figure of merit of strain sensing for elliptical GNA approaches 5.7 times greater than that for circular GNA.

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JO - Optics Express

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Engineering surface lattice resonance of elliptical gold nanodisk array for enhanced strain sensing

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