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Vol. 149, No. 2, February 2013, pp. 37-42

 

Bullet

 

Study of Gaseous Compounds Adsorption with a Love Wave Sensor Based on Molecularly Imprinted Polymeric Thin Film
 
1 N. Omar Aouled, 1 N. Lebal, 1 H. Hallil, 2 R. Delépée, 2 L. Agrofoglio,
1 D. Rebière, 1 C. Dejous

1 Univ. Bordeaux, Laboratory IMS, CNRS UMR 5218, IPB, Univ. Bordeaux 1, Talence, France

2 Univ. Orléans, Institut de Chimie Organique et Analytique, CNRS UMR 7311, Orléans, France

 

 

Received: 31 December 2013   /Accepted: 14 February 2013   /Published: 28 February 2013

Digital Sensors and Sensor Sysstems

 

Abstract: This work exhibits a Love wave sensor combined with molecularly imprinted polymer (MIP). The final aim is for specific detection of colon cancer biomarkers. This paper deals with the validation of a MIP thin film’s coating process, allowing high sensitivity of the resulting microsensor. After a brief description of the acoustic sensor and of the MIP coating process, the functionality of the resulting device is proved with electrical characterization. Deep characterization of the thin film - morphology and print effect - is proposed, based on dynamical responses observed under exposure to different vapors. Experimental results point out a good reproducibility of polymeric films. MIP layers increased responses of sensors to vapors by a factor 3 to 4 compared to bare devices or to devices coated with non-imprinted polymer (NIP). For example, exposure to 4000 mg/m3 (2126 ppm) of ethanol in nitrogen induced a frequency shift of -1.4/-0.4 kHz with MIP/NIP-coated sensor, respectively.

 

Keywords: Love wave, Polymer, MIP, Thin film, Sensor

 

 

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