Title :
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
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;
Conference_Titel :
Sensors, 2008 IEEE
Conference_Location :
Lecce
Print_ISBN :
978-1-4244-2580-8
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2008.4716414
