Fano resonance properties of gold nanocrescent arrays

Zhongwei Liao; Bingpu Zhou; Yingzhou Huang; Shunbo Li; Shuxia Wang; Weijia Wen

doi:10.1364/AO.53.006431

Fano resonance properties of gold nanocrescent arrays

Zhongwei Liao, Bingpu Zhou, Yingzhou Huang^*, Shunbo Li, Shuxia Wang, Weijia Wen

^*Corresponding author for this work

Department of Physics

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

5 Citations (Scopus)

Abstract

The Fano resonance induced by symmetry breaking could improve the sensitivity of localized surface plasmon resonance sensors. In this work, the spectra of gold nanocrescent arrays are measured and confirmed by simulation results through the finite element method (FEM). The Fano resonance presented in the spectra could be modulated by the symmetry breaking with different waist widths, which are understood through plasmonic hybridization theory with the help of surface charge distribution. Our results indicate the Fano lineshape is generated by the coherent coupling of the quadrupole plasmon mode Q_Hof nanohole and the antibonding plasmon mode D_ABof nanocrescent. Finally, the high figure of merit (FoM = 1.6-3.5) of the Q mode in the visible region illustrates this nanocrescent Fano sensor is of great value in the biological and chemical scientific fields.

Original language	English
Pages (from-to)	6431-6434
Number of pages	4
Journal	Applied Optics
Volume	53
Issue number	28
DOIs	https://doi.org/10.1364/AO.53.006431
Publication status	Published - 1 Oct 2014

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© 2014 Optical Society of America.

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title = "Fano resonance properties of gold nanocrescent arrays",

abstract = "The Fano resonance induced by symmetry breaking could improve the sensitivity of localized surface plasmon resonance sensors. In this work, the spectra of gold nanocrescent arrays are measured and confirmed by simulation results through the finite element method (FEM). The Fano resonance presented in the spectra could be modulated by the symmetry breaking with different waist widths, which are understood through plasmonic hybridization theory with the help of surface charge distribution. Our results indicate the Fano lineshape is generated by the coherent coupling of the quadrupole plasmon mode QHof nanohole and the antibonding plasmon mode DABof nanocrescent. Finally, the high figure of merit (FoM = 1.6-3.5) of the Q mode in the visible region illustrates this nanocrescent Fano sensor is of great value in the biological and chemical scientific fields.",

author = "Zhongwei Liao and Bingpu Zhou and Yingzhou Huang and Shunbo Li and Shuxia Wang and Weijia Wen",

note = "Publisher Copyright: {\textcopyright} 2014 Optical Society of America.",

year = "2014",

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day = "1",

doi = "10.1364/AO.53.006431",

language = "English",

volume = "53",

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TY - JOUR

T1 - Fano resonance properties of gold nanocrescent arrays

AU - Liao, Zhongwei

AU - Zhou, Bingpu

AU - Huang, Yingzhou

AU - Li, Shunbo

AU - Wang, Shuxia

AU - Wen, Weijia

PY - 2014/10/1

Y1 - 2014/10/1

N2 - The Fano resonance induced by symmetry breaking could improve the sensitivity of localized surface plasmon resonance sensors. In this work, the spectra of gold nanocrescent arrays are measured and confirmed by simulation results through the finite element method (FEM). The Fano resonance presented in the spectra could be modulated by the symmetry breaking with different waist widths, which are understood through plasmonic hybridization theory with the help of surface charge distribution. Our results indicate the Fano lineshape is generated by the coherent coupling of the quadrupole plasmon mode QHof nanohole and the antibonding plasmon mode DABof nanocrescent. Finally, the high figure of merit (FoM = 1.6-3.5) of the Q mode in the visible region illustrates this nanocrescent Fano sensor is of great value in the biological and chemical scientific fields.

AB - The Fano resonance induced by symmetry breaking could improve the sensitivity of localized surface plasmon resonance sensors. In this work, the spectra of gold nanocrescent arrays are measured and confirmed by simulation results through the finite element method (FEM). The Fano resonance presented in the spectra could be modulated by the symmetry breaking with different waist widths, which are understood through plasmonic hybridization theory with the help of surface charge distribution. Our results indicate the Fano lineshape is generated by the coherent coupling of the quadrupole plasmon mode QHof nanohole and the antibonding plasmon mode DABof nanocrescent. Finally, the high figure of merit (FoM = 1.6-3.5) of the Q mode in the visible region illustrates this nanocrescent Fano sensor is of great value in the biological and chemical scientific fields.

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UR - https://openalex.org/W1969560460

UR - https://www.scopus.com/pages/publications/84942367675

U2 - 10.1364/AO.53.006431

DO - 10.1364/AO.53.006431

M3 - Journal Article

SN - 1559-128X

VL - 53

SP - 6431

EP - 6434

JO - Applied Optics

JF - Applied Optics

IS - 28

ER -

Fano resonance properties of gold nanocrescent arrays

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