Three-Dimensional Soft Material Micropatterning via Grayscale Photolithography for Improved Hydrophobicity of Polydimethylsiloxane (PDMS)
In this present work, we aim to improve the hydrophobicity of a polydimethylsiloxane (PDMS) surface. Various heights of 3D PDMS micropillars were fabricated via grayscale photolithography, and improved wettability was investigated. Two approaches of PDMS replication were demonstrated, both using a s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/13/1/78 |
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| author | Intan Sue Liana Abdul Hamid Beh Khi Khim Mohammad Faiz Mohamed Omar Khairu Anuar Mohamad Zain Nuha Abd Rhaffor Sofiyah Sal Hamid Asrulnizam Abd Manaf |
| author_facet | Intan Sue Liana Abdul Hamid Beh Khi Khim Mohammad Faiz Mohamed Omar Khairu Anuar Mohamad Zain Nuha Abd Rhaffor Sofiyah Sal Hamid Asrulnizam Abd Manaf |
| author_sort | Intan Sue Liana Abdul Hamid |
| collection | DOAJ |
| description | In this present work, we aim to improve the hydrophobicity of a polydimethylsiloxane (PDMS) surface. Various heights of 3D PDMS micropillars were fabricated via grayscale photolithography, and improved wettability was investigated. Two approaches of PDMS replication were demonstrated, both using a single master mold to obtain the micropillar arrays. The different heights of fabricated PDMS micropillars were characterized by scanning electron microscopy (SEM) and a surface profiler. The surface hydrophobicity was characterized by measuring the water contact angles. The fabrication of PDMS micropillar arrays was shown to be effective in modifying the contact angles of pure water droplets with the highest 157.3-degree water contact angle achieved by implementing a single mask grayscale lithography technique. |
| first_indexed | 2024-03-10T00:55:06Z |
| format | Article |
| id | doaj.art-c1a1022c921a491b805fc93035433ff3 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T00:55:06Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-c1a1022c921a491b805fc93035433ff32023-11-23T14:44:32ZengMDPI AGMicromachines2072-666X2022-01-011317810.3390/mi13010078Three-Dimensional Soft Material Micropatterning via Grayscale Photolithography for Improved Hydrophobicity of Polydimethylsiloxane (PDMS)Intan Sue Liana Abdul Hamid0Beh Khi Khim1Mohammad Faiz Mohamed Omar2Khairu Anuar Mohamad Zain3Nuha Abd Rhaffor4Sofiyah Sal Hamid5Asrulnizam Abd Manaf6Faculty of Electrical and Electronic Engineering, Universiti Tun Hussein Onn Malaysia, Batu Pahat 86400, Johor, MalaysiaCollaborative Microelectronic Design Excellence Center (CEDEC), Sains@USM, Universiti Sains Malaysia, Bayan Lepas 11900, Pulau Pinang, MalaysiaCollaborative Microelectronic Design Excellence Center (CEDEC), Sains@USM, Universiti Sains Malaysia, Bayan Lepas 11900, Pulau Pinang, MalaysiaCollaborative Microelectronic Design Excellence Center (CEDEC), Sains@USM, Universiti Sains Malaysia, Bayan Lepas 11900, Pulau Pinang, MalaysiaCollaborative Microelectronic Design Excellence Center (CEDEC), Sains@USM, Universiti Sains Malaysia, Bayan Lepas 11900, Pulau Pinang, MalaysiaCollaborative Microelectronic Design Excellence Center (CEDEC), Sains@USM, Universiti Sains Malaysia, Bayan Lepas 11900, Pulau Pinang, MalaysiaCollaborative Microelectronic Design Excellence Center (CEDEC), Sains@USM, Universiti Sains Malaysia, Bayan Lepas 11900, Pulau Pinang, MalaysiaIn this present work, we aim to improve the hydrophobicity of a polydimethylsiloxane (PDMS) surface. Various heights of 3D PDMS micropillars were fabricated via grayscale photolithography, and improved wettability was investigated. Two approaches of PDMS replication were demonstrated, both using a single master mold to obtain the micropillar arrays. The different heights of fabricated PDMS micropillars were characterized by scanning electron microscopy (SEM) and a surface profiler. The surface hydrophobicity was characterized by measuring the water contact angles. The fabrication of PDMS micropillar arrays was shown to be effective in modifying the contact angles of pure water droplets with the highest 157.3-degree water contact angle achieved by implementing a single mask grayscale lithography technique.https://www.mdpi.com/2072-666X/13/1/78grayscale lithographyhydrophobicmicro 3D structuredropletcontact angle |
| spellingShingle | Intan Sue Liana Abdul Hamid Beh Khi Khim Mohammad Faiz Mohamed Omar Khairu Anuar Mohamad Zain Nuha Abd Rhaffor Sofiyah Sal Hamid Asrulnizam Abd Manaf Three-Dimensional Soft Material Micropatterning via Grayscale Photolithography for Improved Hydrophobicity of Polydimethylsiloxane (PDMS) Micromachines grayscale lithography hydrophobic micro 3D structure droplet contact angle |
| title | Three-Dimensional Soft Material Micropatterning via Grayscale Photolithography for Improved Hydrophobicity of Polydimethylsiloxane (PDMS) |
| title_full | Three-Dimensional Soft Material Micropatterning via Grayscale Photolithography for Improved Hydrophobicity of Polydimethylsiloxane (PDMS) |
| title_fullStr | Three-Dimensional Soft Material Micropatterning via Grayscale Photolithography for Improved Hydrophobicity of Polydimethylsiloxane (PDMS) |
| title_full_unstemmed | Three-Dimensional Soft Material Micropatterning via Grayscale Photolithography for Improved Hydrophobicity of Polydimethylsiloxane (PDMS) |
| title_short | Three-Dimensional Soft Material Micropatterning via Grayscale Photolithography for Improved Hydrophobicity of Polydimethylsiloxane (PDMS) |
| title_sort | three dimensional soft material micropatterning via grayscale photolithography for improved hydrophobicity of polydimethylsiloxane pdms |
| topic | grayscale lithography hydrophobic micro 3D structure droplet contact angle |
| url | https://www.mdpi.com/2072-666X/13/1/78 |
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