Carbon nanotube-coated surface acoustic wave sensor for carbon dioxide sensing

Application of carbon nanotube in wireless sensor network to monitor carbon dioxide

“…This sensing methodology eliminated the common problems of hysteresis and variability due to oxygen adsorption at the metal-CNT junctions in the widely researched CNT-FETs. Combined with their small size and radio-frequency operation, CNT-coated SAW sensors showed a promise as a workable solution for portable, sensitive wireless gas monitoring [38].…”

“…Experimental results show that the sensor tracks CO 2 concentration changes between 0% and 10%. The small wireless sensor is potentially useful for respiratory monitoring system [38].…”

Multiwall Carbon Nanotubes Thin Film Deposition with the Help of Symmetric Focused Surface Acoustic Wave Atomizers

“…The FPA has the highest effectiveness among all types of all atomizers. For the use in the SAW sensors the sensitive film should have well defined shape (2) in order to avoid short-circuiting of SAW transducers and have the phase change linear with mass loading. To test the possibility of the use of proposed technology of the deposition the stream of atomized microdroplets was deposited through the small rectangular window.…”

Surface acoustic wave sensors with carbon nanotubes and SiO2/Si nanoparticles based nanocomposites for VOC detection

“…Surface acoustic wave (SAW) gas sensors based on polylyaniline nanofibers combined with WO 3 , SnO, and In 2 O 3 nanoparticles have been used for detection of H 2 , NO 2 , and CO [6][7][8]. Single and multi-wall carbon nanotubes have been successfully demonstrated for detection of toluene, ethanol, ethylacetate [9][10][11], NO 2 , nitrotoluen [12], H 2 [13], CO 2 [14] and nerve agents [15].…”