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http://hdl.handle.net/123456789/12672
Title: | Piezoresistive effects in controllable defective HFTCVD graphene-based flexible pressure sensor |
Authors: | Muhammad Aniq Shazni Mohammad Hanif Syed Muhammad Hafz Khairul Anuar Abd Wahid Zulkarnain Endut Hing Wah Lee Daniel C. S. Bien Ishak Abdul Azid Mohd. Zulkify Abdullah Nay Ming Huang Saadah Abdul Rahman |
Issue Date: | Aug-2015 |
Publisher: | nature - Scientific Reports |
Citation: | Aniq, Muhammad, Shazni Mohammad, Syed Muhammad Hafiz, Ishak Abdul Azid, Mohd Zulkifly Abdullah, Nay Ming Huang, and Saadah Abdul Rahman. 2015. “Piezoresistive Effects in Controllable Defective HFTCVD Graphene-Based Flexible Pressure Sensor.” Nature Publishing Group, no. August. Nature Publishing Group: 1–10. doi:10.1038/srep14751. |
Abstract: | In this work, the piezoresistive effects of defective graphene used on a flexible pressure sensor are demonstrated. The graphene used was deposited at substrate temperatures of 750, 850 and 1000 °C using the hot-filament thermal chemical vapor deposition method in which the resultant graphene had different defect densities. Incorporation of the graphene as the sensing materials in sensor device showed that a linear variation in the resistance change with the applied gas pressure was obtained in the range of 0 to 50 kPa. The deposition temperature of the graphene deposited on copper foil using this technique was shown to be capable of tuning the sensitivity of the flexible graphene-based pressure sensor. We found that the sensor performance is strongly dominated by the defect density in the graphene, where graphene with the highest defect density deposited at 750 °C exhibited an almost four-fold sensitivity as compared to that deposited at 1000 °C. This effect is believed to have been contributed by the scattering of charge carriers in the graphene networks through various forms such as from the defects in the graphene lattice itself, tunneling between graphene islands, and tunneling between defect-like structures. |
Description: | This article index by Scopus . Ishak Abdul Azid - UniKL MSI |
URI: | http://www.nature.com/articles/srep14751 http://ir.unikl.edu.my/jspui/handle/123456789/12672 |
ISSN: | 2045-2322 |
Appears in Collections: | Journal Articles |
Files in This Item:
File | Description | Size | Format | |
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srep14751.pdf | 2.1 MB | Adobe PDF | View/Open |
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