Characterization of surface wettability
Since the 1980s, research and development of digital microfluidics have been significant due to strong demands in the biotechnological field. Digital microfluidics, where droplets are maneuvered on an open-surface platform, plays a significant role in droplet-based microfluidics as it allows individ...
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| Format: | Final Year Project (FYP) |
| Language: | English |
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Nanyang Technological University
2020
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| Online Access: | https://hdl.handle.net/10356/141406 |
| _version_ | 1826117214423482368 |
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| author | Quek, Jordan Wei Jie |
| author2 | Zhang Yi |
| author_facet | Zhang Yi Quek, Jordan Wei Jie |
| author_sort | Quek, Jordan Wei Jie |
| collection | NTU |
| description | Since the 1980s, research and development of digital microfluidics have been significant due to strong demands in the biotechnological field. Digital microfluidics, where droplets are maneuvered on an open-surface platform, plays a significant role in droplet-based microfluidics as it allows individual droplets to be manipulated and used as a medium for reactions. Therefore, digital microfluidics facilitates the complex handling of sensitive and hazardous samples in their liquid states. In addition, conducting tests in such miniature scales allows for increased automation, creating more opportunities for systematic testing. In magnetic digital microfluidics, a permanent magnet or electromagnet is used to control the movement of the droplet. This is possible because magnetic particles are mixed with the droplet, allowing it to be dragged along the hydrophobic glass substrate by the permanent magnet underneath. Furthermore, magnetic particles serve as a platform for molecule absorption. Magnetic digital microfluidics uses hydrophobic substrates with a low coefficient of friction such as glass. However, glass itself is not hydrophobic and requires coating with a hydrophobic material such as Teflon. At the moment, the most commonly used hydrophobic coating method is applying Teflon on the surface using spin-coating. However, Teflon spin coating is only favorable to flat and smooth surfaces like glass. Teflon itself is also expensive and requires a certain temperature and time to fabricate. Thus, this project aims to identify alternative coating materials that can be used in magnetic digital microfluidic fabrications by characterizing the surface wettability of surfaces coated with various chemicals by measuring their contact angles. |
| first_indexed | 2024-10-01T04:23:39Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/141406 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:23:39Z |
| publishDate | 2020 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1414062023-03-04T18:15:59Z Characterization of surface wettability Quek, Jordan Wei Jie Zhang Yi School of Mechanical and Aerospace Engineering yi_zhang@ntu.edu.sg Engineering::Mechanical engineering Since the 1980s, research and development of digital microfluidics have been significant due to strong demands in the biotechnological field. Digital microfluidics, where droplets are maneuvered on an open-surface platform, plays a significant role in droplet-based microfluidics as it allows individual droplets to be manipulated and used as a medium for reactions. Therefore, digital microfluidics facilitates the complex handling of sensitive and hazardous samples in their liquid states. In addition, conducting tests in such miniature scales allows for increased automation, creating more opportunities for systematic testing. In magnetic digital microfluidics, a permanent magnet or electromagnet is used to control the movement of the droplet. This is possible because magnetic particles are mixed with the droplet, allowing it to be dragged along the hydrophobic glass substrate by the permanent magnet underneath. Furthermore, magnetic particles serve as a platform for molecule absorption. Magnetic digital microfluidics uses hydrophobic substrates with a low coefficient of friction such as glass. However, glass itself is not hydrophobic and requires coating with a hydrophobic material such as Teflon. At the moment, the most commonly used hydrophobic coating method is applying Teflon on the surface using spin-coating. However, Teflon spin coating is only favorable to flat and smooth surfaces like glass. Teflon itself is also expensive and requires a certain temperature and time to fabricate. Thus, this project aims to identify alternative coating materials that can be used in magnetic digital microfluidic fabrications by characterizing the surface wettability of surfaces coated with various chemicals by measuring their contact angles. Bachelor of Engineering (Mechanical Engineering) 2020-06-08T05:47:34Z 2020-06-08T05:47:34Z 2020 Final Year Project (FYP) https://hdl.handle.net/10356/141406 en B018 application/pdf Nanyang Technological University |
| spellingShingle | Engineering::Mechanical engineering Quek, Jordan Wei Jie Characterization of surface wettability |
| title | Characterization of surface wettability |
| title_full | Characterization of surface wettability |
| title_fullStr | Characterization of surface wettability |
| title_full_unstemmed | Characterization of surface wettability |
| title_short | Characterization of surface wettability |
| title_sort | characterization of surface wettability |
| topic | Engineering::Mechanical engineering |
| url | https://hdl.handle.net/10356/141406 |
| work_keys_str_mv | AT quekjordanweijie characterizationofsurfacewettability |