TY - GEN
T1 - Piezoresistive response of aligned carbon nanotube arrays for flow sensing applications
AU - Maschmann, Matthew R.
AU - Ehlert, Gregory J.
AU - Baur, Jeffery W.
PY - 2011
Y1 - 2011
N2 - We investigate the electromechanical sensing capabilities of aligned carbon nanotube (CNT) arrays as a means for a lightweight and simple electromechanical transduction element. CNT array heights of 25 and 350 μm are examined using a modified dynamic mechanical analyzer (DMA) to impart multiple strain-based test configurations while simultaneously measuring electrical resistance. Observed gauge factors range from 12.5 for the 25μm array to greater than 190 for the 350 μm array, with a peak sensitivity of 13,750 ohms/gram force achieved for the 350 μm array. The electromechanical response observed was independent of the examined frequency range, suggesting high fidelity sensory capabilities. Results of this study serve as a preliminary proof of concept for using CNT arrays as a transduction mechanism for a proposed artificial hair sensor for small air vehicles.
AB - We investigate the electromechanical sensing capabilities of aligned carbon nanotube (CNT) arrays as a means for a lightweight and simple electromechanical transduction element. CNT array heights of 25 and 350 μm are examined using a modified dynamic mechanical analyzer (DMA) to impart multiple strain-based test configurations while simultaneously measuring electrical resistance. Observed gauge factors range from 12.5 for the 25μm array to greater than 190 for the 350 μm array, with a peak sensitivity of 13,750 ohms/gram force achieved for the 350 μm array. The electromechanical response observed was independent of the examined frequency range, suggesting high fidelity sensory capabilities. Results of this study serve as a preliminary proof of concept for using CNT arrays as a transduction mechanism for a proposed artificial hair sensor for small air vehicles.
UR - http://www.scopus.com/inward/record.url?scp=84859535039&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84859535039&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84859535039
SN - 9780791854723
T3 - ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2011
SP - 673
EP - 680
BT - ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2011
T2 - ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2011
Y2 - 18 September 2011 through 21 September 2011
ER -