QTF based methanol sensors

Author

Sampson, S. Abraham ; VaijnathPanchal, Suresh ; Date, Kalyani S. ; Datar, Suwarna S.

Author_Institution

Dept. of Appl. Phys., Defence Inst. of Adv. Technol., Pune, India

fYear

2015

fDate

7-10 March 2015

Firstpage

303

Lastpage

306

Abstract

A methanol sensor based on polymer functionalized Quartz Tuning Fork (QTF) has been demonstrated. Thin polymer wires, formed of different polymers and with different additives, were used to form bridges between the two tines of the QTFs. The mechanical properties of the polymer wires, as well as the effective mass of the wires determine the resonant frequency of the QTF sensor. The interaction of the polymer wires with the analyte vapors caused a shift in resonant frequency of the sensor and this shift in frequency, as well as the quantum of shift was measured to determine the selectivity and sensitivity of the sensor to the analytes. The effect of ethanol and methanol vapors on the QTF sensor was observed and the dependence of the selectivity and sensitivity of the sensor on the presence of various polymers as well as the type of polymer loading is discussed.

Keywords

effective mass; gas sensors; organic compounds; polymers; quartz; vibrations; wires; analyte vapors; effective mass; ethanol; mechanical properties; methanol sensor; polymer functionalized quartz tuning fork; resonant frequency; selectivity; sensitivity; thin polymer wires; Ethanol; Methanol; Polymers; Resonant frequency; Sensors; Springs; Wires; alcohol sensor; methanol sensor; polymer sensor; polymer wire; quartz tuning fork;

fLanguage

English

Publisher

ieee

Conference_Titel

Physics and Technology of Sensors (ISPTS), 2015 2nd International Symposium on

Conference_Location

Pune

Type

conf

DOI

10.1109/ISPTS.2015.7220134

Filename

7220134