Graphitisation of waste carbon powder with femtosecond laser annealing
Graphitisation of structural characteristics and improvement in electrical conductivity was reported onto waste carbon powder through femtosecond laser annealing. Raman spectroscopy on the carbon powder pre- and post-annealing showed a shift from amorphous-like carbon to graphitic-like carbon, which...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/160538 |
| _version_ | 1826117712019980288 |
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| author | Lum, Lucas Tan, Chong Wei Siah, Chun Fei Liang, Kun Tay, Beng Kang |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Lum, Lucas Tan, Chong Wei Siah, Chun Fei Liang, Kun Tay, Beng Kang |
| author_sort | Lum, Lucas |
| collection | NTU |
| description | Graphitisation of structural characteristics and improvement in electrical conductivity was reported onto waste carbon powder through femtosecond laser annealing. Raman spectroscopy on the carbon powder pre- and post-annealing showed a shift from amorphous-like carbon to graphitic-like carbon, which can be explained by the three-stage model. Electrical I-V probing of the samples revealed an increase in conductivity by up to 90%. An increase in incident laser power was found to be correlated to an increase in conductivity. An average incident laser power of 0.104 W or less showed little to no change in electrical characteristics, while an average incident laser power of greater than 1.626 W had a destructive effect on the carbon powder, shown through the reduction in powder. The most significant improvement in electrical conductivity has been observed at laser powers ranging from 0.526 to 1.286 W. To conclude, the graphitisation of waste carbon powder is possible using post-process femtosecond laser annealing to alter its electrical conductivity for future applications. |
| first_indexed | 2024-10-01T04:31:45Z |
| format | Journal Article |
| id | ntu-10356/160538 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:31:45Z |
| publishDate | 2022 |
| record_format | dspace |
| spelling | ntu-10356/1605382022-07-26T07:01:09Z Graphitisation of waste carbon powder with femtosecond laser annealing Lum, Lucas Tan, Chong Wei Siah, Chun Fei Liang, Kun Tay, Beng Kang School of Electrical and Electronic Engineering Centre for Micro-/Nano-electronics (NOVITAS) CNRS International NTU THALES Research Alliances Engineering::Electrical and electronic engineering Carbon Black Femtosecond Laser Annealing Graphitisation of structural characteristics and improvement in electrical conductivity was reported onto waste carbon powder through femtosecond laser annealing. Raman spectroscopy on the carbon powder pre- and post-annealing showed a shift from amorphous-like carbon to graphitic-like carbon, which can be explained by the three-stage model. Electrical I-V probing of the samples revealed an increase in conductivity by up to 90%. An increase in incident laser power was found to be correlated to an increase in conductivity. An average incident laser power of 0.104 W or less showed little to no change in electrical characteristics, while an average incident laser power of greater than 1.626 W had a destructive effect on the carbon powder, shown through the reduction in powder. The most significant improvement in electrical conductivity has been observed at laser powers ranging from 0.526 to 1.286 W. To conclude, the graphitisation of waste carbon powder is possible using post-process femtosecond laser annealing to alter its electrical conductivity for future applications. Economic Development Board (EDB) Ministry of Education (MOE) Published version This research was funded by Singapore MOE Tier 2, MOE2018-T2-2-105 and Excelitas Technologies Singapore (EDB-IPP). 2022-07-26T07:01:08Z 2022-07-26T07:01:08Z 2022 Journal Article Lum, L., Tan, C. W., Siah, C. F., Liang, K. & Tay, B. K. (2022). Graphitisation of waste carbon powder with femtosecond laser annealing. Micromachines, 13(1), 120-. https://dx.doi.org/10.3390/mi13010120 2072-666X https://hdl.handle.net/10356/160538 10.3390/mi13010120 35056285 2-s2.0-85123056163 1 13 120 en MOE2018-T2-2-105 EDB-IPP Micromachines © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Carbon Black Femtosecond Laser Annealing Lum, Lucas Tan, Chong Wei Siah, Chun Fei Liang, Kun Tay, Beng Kang Graphitisation of waste carbon powder with femtosecond laser annealing |
| title | Graphitisation of waste carbon powder with femtosecond laser annealing |
| title_full | Graphitisation of waste carbon powder with femtosecond laser annealing |
| title_fullStr | Graphitisation of waste carbon powder with femtosecond laser annealing |
| title_full_unstemmed | Graphitisation of waste carbon powder with femtosecond laser annealing |
| title_short | Graphitisation of waste carbon powder with femtosecond laser annealing |
| title_sort | graphitisation of waste carbon powder with femtosecond laser annealing |
| topic | Engineering::Electrical and electronic engineering Carbon Black Femtosecond Laser Annealing |
| url | https://hdl.handle.net/10356/160538 |
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