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research article

Polymeric foil optical waveguide with inkjet printed gas sensitive film for colorimetric sensing

Courbat, J.  
•
Briand, D.  
•
Wöllenstein, J.
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2011
Sensors and Actuators B: Chemical

The design of low-cost and low-power optical transducers on plastic foil for colorimetric gas sensors is proposed. The transducer was fabricated from PET or PEN foil on which polymeric micro-mirrors and colorimetric film were patterned using additive techniques. It consisted of a planar optical waveguide that was covered with an inkjet printed ammonia sensitive film for its evaluation. A parametric study was performed on the waveguide configuration to reduce the light loss and improve the gas sensing characteristics. The use of polymeric substrate made the device more cost effective and compatible with large scale fabrication, such as roll-to-roll processes. Combined with a low-power interface circuitry operating in pulsed mode, the limit of detection was defined as a function of the power consumption. Sub-ppm concentrations of NH3 were measured at a consumption of 868 mu W. Such potentially low-cost and low-power sensors foresee applications in the field of wireless systems, for environmental and safety monitoring. (C) 201 1 Elsevier B.V. All rights reserved.

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Type
research article
DOI
10.1016/j.snb.2011.09.001
Web of Science ID

WOS:000298768100125

Author(s)
Courbat, J.  
•
Briand, D.  
•
Wöllenstein, J.
•
de Rooij, N. F.  
Date Issued

2011

Publisher

Elsevier

Published in
Sensors and Actuators B: Chemical
Volume

160

Issue

1

Start page

910

End page

915

Subjects

Plastic foil

•

Optical waveguide

•

Inkjet printing

•

Colorimetric sensor

•

Low-power

•

Ammonia

•

Ammonia Sensor

•

Fiber

Peer reviewed

NON-REVIEWED

Written at

EPFL

EPFL units
SAMLAB  
Available on Infoscience
November 21, 2011
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/72707
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