Hybrid plasmonic biosensor for simultaneous measurement of both thickness and refractive index

Youqiao Ma; Gerald Farrell; Yuliya Semenova; Hau Ping Chan; Qiang Wu

doi:10.1016/j.infrared.2013.04.001

Hybrid plasmonic biosensor for simultaneous measurement of both thickness and refractive index

Youqiao Ma, Gerald Farrell, Yuliya Semenova, Hau Ping Chan, Qiang Wu

Mathematics, Physics and Electrical Engineering

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

8 Citations (Scopus)

Abstract

A novel hybrid plasmonic biosensor using a sub-wavelength reflection metal grating is proposed and analyzed. The simulation results show that the hybrid plasmonic-cavity (HPCM) are wavelength dependent on both the refractive index (RI) and thickness of the surrounding analyte layer, with a sensitivity of 448 nm/RIU (refractive index unit) and 75 nm/μm, respectively. However wavelength related to the cavity resonant mode (CRM) is only sensitive to the environmental refractive index changes. In principle it is possible to determine both RI and thickness of the coating layer simultaneously.

Original language	English
Pages (from-to)	134-136
Journal	Infrared Physics & Technology
Volume	60
DOIs	https://doi.org/10.1016/j.infrared.2013.04.001
Publication status	Published - Sept 2013

Keywords

surface plasmon polaritons (SPPs)
refractive index sensing

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10.1016/j.infrared.2013.04.001

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title = "Hybrid plasmonic biosensor for simultaneous measurement of both thickness and refractive index",

abstract = "A novel hybrid plasmonic biosensor using a sub-wavelength reflection metal grating is proposed and analyzed. The simulation results show that the hybrid plasmonic-cavity (HPCM) are wavelength dependent on both the refractive index (RI) and thickness of the surrounding analyte layer, with a sensitivity of 448 nm/RIU (refractive index unit) and 75 nm/μm, respectively. However wavelength related to the cavity resonant mode (CRM) is only sensitive to the environmental refractive index changes. In principle it is possible to determine both RI and thickness of the coating layer simultaneously.",

keywords = "surface plasmon polaritons (SPPs), refractive index sensing",

author = "Youqiao Ma and Gerald Farrell and Yuliya Semenova and Chan, {Hau Ping} and Qiang Wu",

year = "2013",

month = sep,

doi = "10.1016/j.infrared.2013.04.001",

language = "English",

volume = "60",

pages = "134--136",

journal = "Infrared Physics & Technology",

issn = "1350-4495",

publisher = "Elsevier",

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TY - JOUR

T1 - Hybrid plasmonic biosensor for simultaneous measurement of both thickness and refractive index

AU - Ma, Youqiao

AU - Farrell, Gerald

AU - Semenova, Yuliya

AU - Chan, Hau Ping

AU - Wu, Qiang

PY - 2013/9

Y1 - 2013/9

N2 - A novel hybrid plasmonic biosensor using a sub-wavelength reflection metal grating is proposed and analyzed. The simulation results show that the hybrid plasmonic-cavity (HPCM) are wavelength dependent on both the refractive index (RI) and thickness of the surrounding analyte layer, with a sensitivity of 448 nm/RIU (refractive index unit) and 75 nm/μm, respectively. However wavelength related to the cavity resonant mode (CRM) is only sensitive to the environmental refractive index changes. In principle it is possible to determine both RI and thickness of the coating layer simultaneously.

AB - A novel hybrid plasmonic biosensor using a sub-wavelength reflection metal grating is proposed and analyzed. The simulation results show that the hybrid plasmonic-cavity (HPCM) are wavelength dependent on both the refractive index (RI) and thickness of the surrounding analyte layer, with a sensitivity of 448 nm/RIU (refractive index unit) and 75 nm/μm, respectively. However wavelength related to the cavity resonant mode (CRM) is only sensitive to the environmental refractive index changes. In principle it is possible to determine both RI and thickness of the coating layer simultaneously.

KW - surface plasmon polaritons (SPPs)

KW - refractive index sensing

U2 - 10.1016/j.infrared.2013.04.001

DO - 10.1016/j.infrared.2013.04.001

M3 - Article

SN - 1350-4495

VL - 60

SP - 134

EP - 136

JO - Infrared Physics & Technology

JF - Infrared Physics & Technology

ER -

Hybrid plasmonic biosensor for simultaneous measurement of both thickness and refractive index

Abstract

Keywords

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