Title :
Molecular sensing using plasma polymer films (on quartz)
Author :
Sugimoto, Iwao ; Nakamura, Masayuki ; Kuwano, Hiroki
Author_Institution :
NTT Appl. Electron. Lab., Tokyo, Japan
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;
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
DOI :
10.1109/SENSOR.1991.149059
