arXiv subjects

H. Hallil

Publications and source records attributed to H. Hallil.

3 recordsLinked to original sources

arXiv2018

Love wave gas sensor based on DWNTs sensitive material

This work focuses on the application related to the detection of low moisture and environmental pollutants. A novel gas sensor with inkjet printed Double Walled Carbon Nano Tubes (DWNTs) on a Love wave sensor platform was developed for Volatile Organic Compounds (VOCs) and humidity detection application. The experiments were conducted in real-time at ambient conditions. Results demonstrate the adsorption of vapor compounds on DWNTs sensitive material and leads for example to frequency shifts of 1.97 kHz and 2.93 kHz with 120 ppm of ethanol vapor and 6.22 % RH, respectively.

physics.ins-det↗

arXiv2018

SH-SAW VOCs sensor based on ink-jet printed MWNTs / polymer nanocomposite films

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.

physics.ins-det↗

arXiv2018

Capacitive microwave sensor for toxic vapor detection in an atmospheric environment

-This paper presents an inkjet printing capacitive microwave sensor for toxic vapor detection. The designed sensors were presented and fabricated with success. The experiments show sensitivity to ethanol vapor according to the S parameters. It is equal to 0.9 kHz/ppm and 1.3 kHz/ppm for the sensors based on 5 and 50 sensitive layers respectively. This sensor will be integrated into real-time multi-sensing platforms adaptable for the Internet of Things (IoT).

physics.ins-det↗