Molecular sensing using plasma polymer films (on quartz)

Author

Sugimoto, Iwao ; Nakamura, Masayuki ; Kuwano, Hiroki

Author_Institution

NTT Appl. Electron. Lab., Tokyo, Japan

fYear

1991

Firstpage

994

Lastpage

997

Abstract

An experimental study reveals that plasma polymers containing high concentrations of stable radicals and pi -conjugated moieties are powerful probe materials for molecular sensing. Specific and sensitive sensor systems can be constructed of quartz crystals coated with these films, and molecular classification techniques can be used to analyze the transient piezoelectric responses of these crystals. Sensor probes consisting of plasma polymer films coated on quartz crystal microbalance are investigated. These sensor systems respond reversibly and reproducibly, alternating exposure to vaporized molecules and to air. Molecular classification mapping, reflecting physiochemical characteristics of target molecules, gives valuable information for molecular sensing.<>

Keywords

balances; biosensors; crystal resonators; electric sensing devices; piezoelectric transducers; polymer films; sputtered coatings; SiO/sub 2/; molecular classification techniques; molecular recognition; molecular sensing; pi -conjugated moieties; plasma polymer films; probe materials; quartz crystal microbalance; sensitive sensor systems; sputtered coatings; stable radicals; transient piezoelectric responses; Crystalline materials; Crystals; Optical films; Piezoelectric films; Plasma materials processing; Plasma stability; Polymer films; Probes; Sensor systems; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State Sensors and Actuators, 1991. Digest of Technical Papers, TRANSDUCERS '91., 1991 International Conference on

Conference_Location

San Francisco, CA, USA

Print_ISBN

0-87942-585-7

Type

conf

DOI

10.1109/SENSOR.1991.149059

Filename

149059