Highly sensitive integrated pressure sensor with horizontally oriented carbon nanotube network

This paper presents a functionalized, horizontally oriented carbon nanotube network as a sensing element to enhance the sensitivity of a pressure sensor. The synthesis of horizontally oriented nanotubes from the AuFe catalyst and their deposition onto a mechanically flexible substrate via transfer p...

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Veröffentlicht in:Nanoscale research letters 2014-01, Vol.9 (1), p.49-49, Article 49
Hauptverfasser: Mohammad Haniff, Muhammad Aniq Shazni, Lee, Hing Wah, Bien, Daniel Chia Sheng, Teh, Aun Shih, Azid, Ishak Abdul
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container_start_page 49
container_title Nanoscale research letters
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creator Mohammad Haniff, Muhammad Aniq Shazni
Lee, Hing Wah
Bien, Daniel Chia Sheng
Teh, Aun Shih
Azid, Ishak Abdul
description This paper presents a functionalized, horizontally oriented carbon nanotube network as a sensing element to enhance the sensitivity of a pressure sensor. The synthesis of horizontally oriented nanotubes from the AuFe catalyst and their deposition onto a mechanically flexible substrate via transfer printing are studied. Nanotube formation on thermally oxidized Si (100) substrates via plasma-enhanced chemical vapor deposition controls the nanotube coverage and orientation on the flexible substrate. These nanotubes can be simply transferred to the flexible substrate without changing their physical structure. When tested under a pressure range of 0 to 50 kPa, the performance of the fabricated pressure sensor reaches as high as approximately 1.68%/kPa, which indicates high sensitivity to a small change of pressure. Such sensitivity may be induced by the slight contact in isolated nanotubes. This nanotube formation, in turn, enhances the modification of the contact and tunneling distance of the nanotubes upon the deformation of the network. Therefore, the horizontally oriented carbon nanotube network has great potential as a sensing element for future transparent sensors.
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subjects Chemistry and Materials Science
Materials Science
Molecular Medicine
Nano Express
Nanochemistry
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
title Highly sensitive integrated pressure sensor with horizontally oriented carbon nanotube network
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