Subsurface HS Detection by a Surface Acoustic Wave Passive Wireless Sensor Interrogated with a Ground Penetrating Radar.

Fiche publication

Date publication

avril 2020

Journal

ACS sensors

Auteurs

Membres identifiés du Cancéropôle Est :
Dr CHERIOUX Frédéric

Tous les auteurs :
Rabus D, Friedt JM, Arapan L, Lamare S, Baqué M, Audouin G, Chérioux F

Lien Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/32202415

Résumé

Long-term monitoring of organic pollutants in the soil is a major environmental challenge. We propose to meet this issue by the development of a polymer dedicated to selectively react with HS, coating surface acoustic wave transducers designed as passive cooperative targets with the compound, and probing their response using Ground Penetrating RADAR, thus providing the capability to monitor the presence of HS in the subsurface environment. The selectivity is brought by including lead(II) cation in a reticulated polymer matrix which can be deposited as a thin layer on a surface acoustic wave sensor. We demonstrate a signal enhancement mechanism in which water absorption magnifies the signal detection, making the sensor most sensitive to HS in an underground environment saturated with moisture.