Abstract
This paper presents the design, fabrication, and characterization of a novel inclination-angle sensor (inclinometer) using heating and sensing elements based on conductive polydimethylsiloxane (PDMS) composited with carbon nanotubes (CNTs). The inclinometer consists of a PDMS cube-shaped chamber, a CNTs/PDMS composite-based heater, and four CNTs/PDMS composite-based temperature sensors. The working mechanism of this sensor is based on thermal convective sensing theory on the basis of the detection of thermal disturbance caused by inclination-induced convection in a sealed chamber. In order to prepare the conductive CNTs/PDMS composite, toluene was applied as a solvent to facilitate CNT dispersion in PDMS matrix and then was removed by evaporation. The resistive heating and thermal sensing properties of CNT/PDMS composite-based elements were tested and analyzed first. Then, the responses to inclination-angle were monitored and reported. Experimental results demonstrate that the inclinometer can measure dual-axis angular position in the range of 360° with high stability and repeatability.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant nos. 61574117 and 61274120) and the Natural Science Foundation of Guangdong Province (Grant no. 2018B030311002).
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Zhang, S., Chen, C., Bin, W. et al. Dual-axis thermal convective inclinometer based on CNT/PDMS composite. J Mater Sci: Mater Electron 29, 18997–19004 (2018). https://doi.org/10.1007/s10854-018-0025-x
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DOI: https://doi.org/10.1007/s10854-018-0025-x