Abstract
Surface plasmon resonance (SPR)-based sensors are widely used today for express analysis of liquid biological mediums in microbiology, medicine and genetic engineering. They are also used for detecting different contaminants in gaseous mediums. In this case, the main problem of such sensors development is choosing of selective sorbents applied to the sensor surface of for detecting a specific contaminant. Sorbent properties in combination with SPR high sensitivity define the achievable sensor parameters. At nanometer thicknesses of sorbents, the surface condition defines the main contribution to the sensor properties. The impact of the positive corona discharge plasma leads to an effective desorption of extraneous contaminants that block active adsorption centers. Furthermore, the sensor surface is exposed to radicals generated in the discharge plasma under ionization of contaminants. In the present paper, we discuss the possibility of using the corona discharge effects for developing SPR sensors, allowing one to detect trace contaminants in gaseous mediums.
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Palagushkin, A.N., Prokopenko, S.A. & Sergeev, A.P. SPR gas sensor with corona discharge. Opt. Mem. Neural Networks 24, 1–7 (2015). https://doi.org/10.3103/S1060992X1501004X
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DOI: https://doi.org/10.3103/S1060992X1501004X