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Chin. Phys. B, 2016, Vol. 25(2): 028801    DOI: 10.1088/1674-1056/25/2/028801

Flexible impedance and capacitive tensile load Sensor based on CNT composite

Zubair Ahmad1, Kh S Karimov2,3, Farid Touati1
1. Department of Electrical Engineering, College of Engineering, Qatar University, Doha 2713, Qatar;
2. Ghulam Ishaq Khan Institute of Engineering Sciences and Technology, Topi, District Swabi, KPK, 23640, Pakistan;
3. Center for Innovative Development of Science and New Technologies, Academy of Sciences, Aini St., 299/2, Dushanbe, 734063, Tajikistan
Abstract  In this paper, the fabrication and investigation of flexible impedance and capacitive tensile load sensors based on carbon nanotube (CNT) composite are reported. On thin rubber substrates, CNTs are deposited from suspension in water and pressed at elevated temperature. It is found that the fabricated load cells are highly sensitive to the applied mechanical force with good repeatability. The increase in impedance of the cells is observed to be 2.0 times while the decrease in the capacitance is found to be 2.1 times as applied force increases up to 0.3 N. The average impedance and capacitive sensitivity of the cell are equal to 3.4 N-1 and 1.8 N-1, respectively. Experimental results are compared with the simulated values, and they show that they are in reasonable agreement with each other.
Keywords:  carbon nanotubes      flexible      tensile load      impedance      capacitive     
Received:  24 August 2015      Published:  05 February 2016
PACS:  88.30.rh (Carbon nanotubes)  
  42.70.Jk (Polymers and organics)  
  47.80.Fg (Pressure and temperature measurements)  
Corresponding Authors:  Zubair Ahmad     E-mail:

Cite this article: 

Zubair Ahmad, Kh S Karimov, Farid Touati Flexible impedance and capacitive tensile load Sensor based on CNT composite 2016 Chin. Phys. B 25 028801

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