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ThinkMind // ALLSENSORS 2016, The First International Conference on Advances in Sensors, Actuators, Metering and Sensing // View article allsensors_2016_5_20_70020


Flexible Gas Sensors Fabricated by Ultrasonic Spray Deposition

Authors:
Sandrine Bernardini
Marc Bendahan
Monica Acuautla
Emmanuelle Pietri

Keywords: Flexible gas sensor; ultrasonic spray deposition; ozone sensor; ammonia sensor; kapton substrate; ZnO ink

Abstract:
Sensors are changing the way people live and considerable efforts are under way for their integration into daily devices. Recently, much attention has been given to sensor fields for flexible and printed electronics. Among all the processes, ultrasonic spray deposition is a simple and precise technique giving enormous potential for applications with low cost production, low waste of material and thin film uniformity. In this work, we are focusing on Zinc Oxide nanoparticles deposited by ultrasonic spray on a flexible substrate as sensitive layer for air quality monitoring. The flexible platform consists of Ti/Pt interdigitated electrodes for gas detection and a micro-heater device, both on Kapton HN substrate. A brief description of the process steps will be provided. Gas sensing properties have been investigated and the flexible sensors present repeatable responses toward ammonia (NH3) and ozone (O3) with fast responses and recovery times in a wide range of gas concentrations. The optimum working temperatures were experimentally determined at 300 °C for NH3 and 200 C° for O3. Overall, this work highlights the ultrasonic spray potential for fast processing flexible gas sensors based on zinc oxide solution.

Pages: 38 to 39

Copyright: Copyright (c) IARIA, 2016

Publication date: April 24, 2016

Published in: conference

ISSN: 2519-836X

ISBN: 978-1-61208-523-4

Location: Venice, Italy

Dates: from April 24, 2016 to April 28, 2016

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