Characterization and Sensing of Inert Gases with a High-Resolution SPR Sensor

Sensors
Zhenchao LiuSailing He

Abstract

It is generally difficult to characterize inert gases through chemical reactions due to their inert chemical properties. The phase interference-sensing system based on high-resolution surface plasmon resonance (SPR) has an excellent refractive index detection limit. Based on this, this paper presents a simple and workable method for the characterization and detection of inert gases. The phase of light for the present SPR sensor is more sensitive to the change in the external dielectric environment than an amplitude SPR sensor. The limit of detection (LOD) is usually in the order of 10-6 to 10-7 RIU, which is superior to LSPR (Localized Surface Plasmon Resonance) sensors and traditional SPR sensors. The sensor parameters are simulated and optimized. Our simulation shows that a 36 nm-thick gold film is more suitable for the SPR sensing of inert gases. By periodically switching between the two inert gases, helium and argon, the resolution of the system is tested. The SPR sensing system can achieve distinguishable difference signals, enabling a clear distinction and characterization of helium and argon. The doping of argon in helium has a detection limit of 1098 ppm.

References

Jul 18, 1978·Pflügers Archiv : European journal of physiology·M Meyer
Oct 4, 2005·Methods : a Companion to Methods in Enzymology·Jirí HomolaMarek Piliarik
Dec 10, 2009·Optics Express·Andrei V KabashinAlexander N Grigorenko
Nov 26, 2010·Journal of the American Chemical Society·Julia M BinghamRichard P Van Duyne
Dec 18, 2013·Analytica Chimica Acta·M-Carmen EstevezLaura M Lechuga
Oct 21, 2017·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Ning WangDaqian Song
Apr 1, 2018·Biosensors & Bioelectronics·Saeideh Mohammadzadeh-AslMiguel de la Guardia
Mar 10, 2019·Nature Communications·Hai HuQing Dai
Oct 31, 2019·The Analyst·Elba MaurizLaura M Lechuga

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Methods Mentioned

BETA
surface plasmon resonance
biosensing
chemical modification
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