Graphene-like nano-Sheets/36° LiTaO3 surface acoustic wave hydrogen gas sensor

Author

Arsat, R. ; Breedon, M. ; Shafiei, Mohammadsajjad ; Kalantar-Zadeh, K. ; Wlodarski, W. ; Gilje, Sverre ; Kaner, R.B. ; Arregui, Francisco

Author_Institution

RMIT Univ., Melbourne, VIC

fYear

2008

fDate

26-29 Oct. 2008

Firstpage

188

Lastpage

191

Abstract

Presented is the material and gas sensing properties of graphene-like nano-sheets deposited on 36deg YX lithium tantalate (LiTaO₃) surface acoustic wave (SAW) transducers. The graphene-like nano-sheets were characterized via scanning electron microscopy (SEM), atomic force microscopy (AFM) and X-ray photoelectron spectroscopy (XPS). The graphenelike nano-sheet/SAW sensors were exposed to different concentrations of hydrogen (H₂) gas in a synthetic air at room temperature. The developed sensors exhibit good sensitivity towards low concentrations of H₂ in ambient conditions, as well as excellent dynamic performance towards H₂ at room temperature.

Keywords

X-ray photoelectron spectra; atomic force microscopy; carbon; gas sensors; lithium compounds; nanostructured materials; scanning electron microscopy; surface acoustic wave sensors; surface acoustic wave transducers; C-LiTaO₃; X-ray photoelectron spectroscopy; atomic force microscopy; graphene-like nano-sheets; hydrogen gas sensor; scanning electron microscopy; surface acoustic wave transducers; Acoustic materials; Acoustic transducers; Acoustic waves; Atomic force microscopy; Lithium compounds; Photoelectron microscopy; Scanning electron microscopy; Sensor phenomena and characterization; Surface acoustic waves; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2008 IEEE

Conference_Location

Lecce

ISSN

1930-0395

Print_ISBN

978-1-4244-2580-8

Electronic_ISBN

1930-0395

Type

conf

DOI

10.1109/ICSENS.2008.4716414

Filename

4716414