Carbon nanotube–cuprous oxide composite based pressure sensors

doi:10.1088/1674-1056/21/1/016102

Abstract In this paper, we present the design, the fabrication, and the experimental results of carbon nanotube (CNT) and Cu₂O composite based pressure sensors. The pressed tablets of the CNT-Cu₂O composite are fabricated at a pressure of 353 MPa. The diameters of the multiwalled nanotubes (MWNTs) are between 10 nm and 30 nm. The sizes of the Cu₂O micro particles are in the range of 3-4 μm. The average diameter and the average thickness of the pressed tablets are 10 mm and 4.0 mm, respectively. In order to make low resistance electric contacts, the two sides of the pressed tablet are covered by silver pastes. The direct current resistance of the pressure sensor decreases by 3.3 ×as the pressure increases up to 37 kN/m². The simulation result of the resistance-pressure relationship is in good agreement with the experimental result within a variation of ± 2%.

Keywords: carbon nanotubes Cu₂O micro-powder pressure sensor simulation

Received: 07 July 2011
Revised: 16 August 2011
Accepted manuscript online:

PACS:	61.48.De	(Structure of carbon nanotubes, boron nanotubes, and other related systems)
	72.20.Fr	(Low-field transport and mobility; piezoresistance)
	07.07.Df	(Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)

Cite this article:

Kh. S. Karimov, Muhammad Tariq Saeed Chani, Fazal Ahmad Khalid, Adam Khan, and Rahim Khan Carbon nanotube–cuprous oxide composite based pressure sensors 2012 Chin. Phys. B 21 016102

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Carbon nanotube–cuprous oxide composite based pressure sensors

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