Dual-mode independent detection of pressure and refractive index by miniature grating-coupled surface plasmon sensor

TY - JOUR

T1 - Dual-mode independent detection of pressure and refractive index by miniature grating-coupled surface plasmon sensor

AU - Ni, Haibin

AU - Zhang, Lu

AU - Ping, An

AU - Krasavin, Alexey V.

AU - Ali, Hassan

AU - Ni, Bo

AU - Chang, Jianhua

N1 - Funding Information: Funding. National Natural Science Foundation of China (61605082, 61875089); Natural Science Foundation of Jiangsu Province (BE2016756, BK20160969); China Postdoctoral Science Foundation (2017M611654); ERC iCOMM (789340); Engineering and Physical Sciences Research Council (EP/M013812/1); Priority Academic Program Development of Jiangsu Higher Education Institutions. Publisher Copyright: © 2022 OSA - The Optical Society. All rights reserved.

PY - 2022/2/14

Y1 - 2022/2/14

N2 - Multiple parameters need to be monitored to analyze the kinetics of biological progresses. Surface plasmon polariton resonance sensors offer a non-invasive approach to continuously detect the local change of refractive index of molecules with high sensitivity. However, the fabrication of miniaturized, compact, and low-cost sensors is still challenging. In this paper, we propose and demonstrate a grating-coupled SPR sensor platform featuring dual mode operation for simultaneous sensing of pressure and refractive index, which can be fabricated using a highly-efficient low-cost method, allowing large-scale production. Both sensing functionalities are realized by optical means via monitoring the spectral positions of a surface plasmon polariton mode (for refractive index sensing) and Fabry-Perot or metal-insulator-metal modes (for pressure sensing), which are supported by the structure. Simultaneous measurement of refractive index with the sensitivity of 494 nm/RIU and pressure was demonstrated experimentally. The proposed platform is promising for biomonitoring that requires both high refractive index sensitivity and local pressure detection.

AB - Multiple parameters need to be monitored to analyze the kinetics of biological progresses. Surface plasmon polariton resonance sensors offer a non-invasive approach to continuously detect the local change of refractive index of molecules with high sensitivity. However, the fabrication of miniaturized, compact, and low-cost sensors is still challenging. In this paper, we propose and demonstrate a grating-coupled SPR sensor platform featuring dual mode operation for simultaneous sensing of pressure and refractive index, which can be fabricated using a highly-efficient low-cost method, allowing large-scale production. Both sensing functionalities are realized by optical means via monitoring the spectral positions of a surface plasmon polariton mode (for refractive index sensing) and Fabry-Perot or metal-insulator-metal modes (for pressure sensing), which are supported by the structure. Simultaneous measurement of refractive index with the sensitivity of 494 nm/RIU and pressure was demonstrated experimentally. The proposed platform is promising for biomonitoring that requires both high refractive index sensitivity and local pressure detection.

UR - http://www.scopus.com/inward/record.url?scp=85124455777&partnerID=8YFLogxK

U2 - 10.1364/OE.446766

DO - 10.1364/OE.446766

M3 - Article

AN - SCOPUS:85124455777

SN - 1094-4087

VL - 30

SP - 5758

EP - 5768

JO - OPTICS EXPRESS

JF - OPTICS EXPRESS

IS - 4

ER -