Vapor detection with polysiloxane coated Love-wave devices. Influence of thin film viscoelastic properties: sensitivity analysis

Author

Zimmermann, Celine ; Tamarin, Ollivier ; Rebière, Dominique ; Déjous, Corinne ; Pistre, Jacques ; Planade, Roger

Author_Institution

Lab. IXL, Talence, France

Volume

1

fYear

2000

fDate

36800

Firstpage

467

Abstract

In this paper, polysiloxane coated Love-wave devices are used to detect organophosphorus compounds. Theoretical calculation (analytical and numerical) has been undertaken taking into account sensitive coating shear modulus and viscosity on the Love-wave device sensitivity. A comparison with experimental results under gas (DMMP compounds) brings to light that a pure mass loading effect cannot explain the sensor response. According to several assumptions about polymer properties, an analysis of the detection mechanism is proposed and shows the influence of the coating viscoelastic properties

Keywords

Love waves; gas sensors; organic compounds; polymer films; shear modulus; viscoelasticity; viscosity; DMMP; Love wave device; mass loading; organophosphorus compound; polysiloxane coating; sensitivity analysis; shear modulus; thin film; vapor detection; viscoelastic properties; viscosity; Acoustic devices; Acoustic sensors; Coatings; Dispersion; Elasticity; Mechanical factors; Substrates; Surface acoustic wave devices; Thin film devices; Viscosity;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2000 IEEE

Conference_Location

San Juan

ISSN

1051-0117

Print_ISBN

0-7803-6365-5

Type

conf

DOI

10.1109/ULTSYM.2000.922594

Filename

922594