Home // ALLSENSORS 2024, The Ninth International Conference on Advances in Sensors, Actuators, Metering and Sensing // View article
Authors:
Lisa Weber
Virginie Martini
Marc Bendahan
David Grosso
Keywords: mesoporous sensor; CuBr; ammonia.
Abstract:
The need for non-invasive methods to improve medical monitoring is growing and transdermal gas monitoring seems relevant. We aim to fabricate a gas sensor for ammonia transdermal detection as ammonia is a biomarker of chronic kidney disease. We previously showed that the synthesis of mesoporous SiO2 thin film followed by CuBr impregnation led to a room-temperature selective ammonia sensor with very high sensitivity. Here, we show that the device detection limit and resolution are suitable for the detection of the very small quantities emitted from the skin. To evaluate the possibility of implementing this sensor in a skin-like environment, we also studied the effect of temperature and humidity on the sensing performances. Temperature has a small impact on the sensor baseline but a bigger impact on the sensor response. The humidity effect on the sensor response to ammonia is low below 30%. The effect is higher at 50% relative humidity and may be attributed to the film mesoporous structure. This paper shows that the sensing properties of the sensor make it a good candidate for transdermal ammonia detection.
Pages: 48 to 51
Copyright: Copyright (c) IARIA, 2024
Publication date: May 26, 2024
Published in: conference
ISSN: 2519-836X
ISBN: 978-1-68558-164-0
Location: Barcelona, Spain
Dates: from May 26, 2024 to May 30, 2024