SH-SAW VOCs sensor based on ink-jet printed MWNTs / polymer nanocomposite films
H. Hallil (IMS), Q. Zhang (NTU, UMI CINTRA), E. Flahaut (CIRIMAT), K, Pieper (IMS), L Ol\c{c}omendy (IMS), P Coquet (UMI CINTRA, IEMN), C Dejous, (IMS), D Rebi\`ere (IMS)
TL;DR
This paper introduces a novel SH-SAW sensor utilizing ink-jet printed MWNTs/polymer nanocomposite films for detecting VOCs, demonstrating promising sensitivity and reproducibility in ethanol vapor detection.
Contribution
It presents a new ink-jet printing fabrication method for SH-SAW sensors with nanocomposite sensitive layers, enhancing sensor reproducibility and sensitivity.
Findings
Sensor sensitivity of 12Hz/ppm for ethanol vapor
Successful ink-jet printing of nanocomposite layers
Reproducible measurements across different device tests
Abstract
This study presents Shear Horizontal Surface Acoustic Wave (SH-SAW) sensor based on ink-jet printed poly (3,4-ethylenedioxythiophene) polystyrene sulfonate -- multi wall carbon nanotubes (PEDOT:PSS-MWCNTs) and MWNTs-based inks as sensitive gas material. Experiments show the validation of fabrication process of acoustic platform and ink-jet printed sensitive layers. The characterization of two devices under different concentrations of ethanol vapor shows promising results in terms of reproducibility of the measurements. A sensitivity of 12Hz/ppm was recorded with the sensor based on ink-jet printed 600nm thickness sensitive layer.
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