Monitoring of pH by using stimulus responsive hydrogel and Fiber Bragg grating for bioreactor application

Aruna N

doi:10.1117/12.2615861

27 October 2021 Monitoring of pH by using stimulus responsive hydrogel and Fiber Bragg grating for bioreactor application

Aruna N

Author Affiliations +

Proceedings Volume 11925, Biomedical Imaging and Sensing Conference 2021; 119251B (2021) https://doi.org/10.1117/12.2615861
Event: SPIE Technologies and Applications of Structured Light, 2021, Online, Japan

Abstract

In this paper a pH monitoring system is demonstrated by utilizing wavelength modulated fiber optic techniques. A stimulus responsive hydrogel which exhibits a volume change with the change of pH is utilized to render a strain on Fiber Bragg grating (FBG). The gel is synthesized from the blends of Poly (vinyl alcohol)/Poly (acrylic acid). The induced strain causes a FBG peak shift that can be used as a measure of pH change. The proposed sensing system exhibits a good linearity in acidic pH range of 3 to 7 with a sensitivity of 250 pm/pH. Besides that it is very cost effective, bio degradable and also possess repeatability.

Citation Download Citation

Aruna N "Monitoring of pH by using stimulus responsive hydrogel and Fiber Bragg grating for bioreactor application", Proc. SPIE 11925, Biomedical Imaging and Sensing Conference 2021, 119251B (27 October 2021); https://doi.org/10.1117/12.2615861

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