TY - GEN
T1 - Soft-matter capacitive sensor for measuring shear and pressure deformation
AU - Roberts, Peter
AU - Damian, Dana D.
AU - Shan, Wanliang
AU - Lu, Tong
AU - Majidi, Carmel
PY - 2013/11/14
Y1 - 2013/11/14
N2 - We introduce a soft-matter sensor that measures elastic pressure and shear deformation. The sensor is composed of a sheet of elastomer that is embedded with fluidic parallel-plate capacitors. When the elastomer is pressed or sheared, the electrodes of the embedded capacitors come closer together or slide past each other, respectively, leading to a change in capacitance. The magnitude and direction of the shear deformation is established by comparing the change in capacitance of multiple embedded capacitors. We characterize the soft sensor theoretically and experimentally. Experiments indicate that 2D shear and pressure deformation can be discriminated with approximately 500 μm and 5 kPa sensitivity, respectively. The theoretical predictions and experimental results are in reasonable agreement. We also propose improvements to the fabrication method in order to facilitate integration of soft-matter sensing with wearable electronics.
AB - We introduce a soft-matter sensor that measures elastic pressure and shear deformation. The sensor is composed of a sheet of elastomer that is embedded with fluidic parallel-plate capacitors. When the elastomer is pressed or sheared, the electrodes of the embedded capacitors come closer together or slide past each other, respectively, leading to a change in capacitance. The magnitude and direction of the shear deformation is established by comparing the change in capacitance of multiple embedded capacitors. We characterize the soft sensor theoretically and experimentally. Experiments indicate that 2D shear and pressure deformation can be discriminated with approximately 500 μm and 5 kPa sensitivity, respectively. The theoretical predictions and experimental results are in reasonable agreement. We also propose improvements to the fabrication method in order to facilitate integration of soft-matter sensing with wearable electronics.
UR - http://www.scopus.com/inward/record.url?scp=84887282822&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84887282822&partnerID=8YFLogxK
U2 - 10.1109/ICRA.2013.6631071
DO - 10.1109/ICRA.2013.6631071
M3 - Conference contribution
AN - SCOPUS:84887282822
SN - 9781467356411
T3 - Proceedings - IEEE International Conference on Robotics and Automation
SP - 3529
EP - 3534
BT - 2013 IEEE International Conference on Robotics and Automation, ICRA 2013
T2 - 2013 IEEE International Conference on Robotics and Automation, ICRA 2013
Y2 - 6 May 2013 through 10 May 2013
ER -