Wetting behavior of textured silicon surfaces- an experimental study
The behavior of a liquid on a solid surface has shown great interest in a variety of applications related to surfaces and its interfaces. In this paper, the wetting behavior of DI water on micropatterned silicon surfaces fabricated through photolithography and deep reactive ion etching (DRIE) is inv...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ab8cf7 |
| _version_ | 1827868699775729664 |
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| author | Mohan Kumar K V Velmurugan |
| author_facet | Mohan Kumar K V Velmurugan |
| author_sort | Mohan Kumar K |
| collection | DOAJ |
| description | The behavior of a liquid on a solid surface has shown great interest in a variety of applications related to surfaces and its interfaces. In this paper, the wetting behavior of DI water on micropatterned silicon surfaces fabricated through photolithography and deep reactive ion etching (DRIE) is investigated. Micro pillars of both solid and hollow geometries at a varying pitch and its arrangement in an array has been examined with static contact angle measurement. However, the results concluded that the arrangement of pillars in an array plays an important role as hollow geometries in the case of chain type arrangement provide both hydrophilic and hydrophobic surface properties, while the same hollow geometries in case of zig-zag orientation experiences only hydrophobicity at a varying pitch. Decreased WCA with increased pitch has been observed in the case of a zig-zag arrangement, due to the effect of capillary and gravitation forces. Also the existence of air pockets at sharp corner in the case of hollow square assists in providing maximum contact angle (WCA = 144°) as compared to hollow circle and solid geometries; thus a non-sticky behavior would be possible between the droplet and the patterned surface, due to less adhesion force. |
| first_indexed | 2024-03-12T15:36:05Z |
| format | Article |
| id | doaj.art-2fdce9c65b144b3c8a3a73284e5858f4 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:36:05Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-2fdce9c65b144b3c8a3a73284e5858f42023-08-09T16:12:46ZengIOP PublishingMaterials Research Express2053-15912020-01-017505400110.1088/2053-1591/ab8cf7Wetting behavior of textured silicon surfaces- an experimental studyMohan Kumar K0https://orcid.org/0000-0001-5165-0423V Velmurugan1https://orcid.org/0000-0001-7893-4514Dr T. Thimmaiah Institute of Technology, KGF—563120, Karnataka, India; Centre for Nanotechnology Research (CNR), VIT- University , Vellore - 632014, Tamil Nadu, IndiaCentre for Nanotechnology Research (CNR), VIT- University , Vellore - 632014, Tamil Nadu, IndiaThe behavior of a liquid on a solid surface has shown great interest in a variety of applications related to surfaces and its interfaces. In this paper, the wetting behavior of DI water on micropatterned silicon surfaces fabricated through photolithography and deep reactive ion etching (DRIE) is investigated. Micro pillars of both solid and hollow geometries at a varying pitch and its arrangement in an array has been examined with static contact angle measurement. However, the results concluded that the arrangement of pillars in an array plays an important role as hollow geometries in the case of chain type arrangement provide both hydrophilic and hydrophobic surface properties, while the same hollow geometries in case of zig-zag orientation experiences only hydrophobicity at a varying pitch. Decreased WCA with increased pitch has been observed in the case of a zig-zag arrangement, due to the effect of capillary and gravitation forces. Also the existence of air pockets at sharp corner in the case of hollow square assists in providing maximum contact angle (WCA = 144°) as compared to hollow circle and solid geometries; thus a non-sticky behavior would be possible between the droplet and the patterned surface, due to less adhesion force.https://doi.org/10.1088/2053-1591/ab8cf7static contact anglemicro-patterned surfacewetting behaviorpattern geometryzigzag arrangementchain type arrangement |
| spellingShingle | Mohan Kumar K V Velmurugan Wetting behavior of textured silicon surfaces- an experimental study Materials Research Express static contact angle micro-patterned surface wetting behavior pattern geometry zigzag arrangement chain type arrangement |
| title | Wetting behavior of textured silicon surfaces- an experimental study |
| title_full | Wetting behavior of textured silicon surfaces- an experimental study |
| title_fullStr | Wetting behavior of textured silicon surfaces- an experimental study |
| title_full_unstemmed | Wetting behavior of textured silicon surfaces- an experimental study |
| title_short | Wetting behavior of textured silicon surfaces- an experimental study |
| title_sort | wetting behavior of textured silicon surfaces an experimental study |
| topic | static contact angle micro-patterned surface wetting behavior pattern geometry zigzag arrangement chain type arrangement |
| url | https://doi.org/10.1088/2053-1591/ab8cf7 |
| work_keys_str_mv | AT mohankumark wettingbehavioroftexturedsiliconsurfacesanexperimentalstudy AT vvelmurugan wettingbehavioroftexturedsiliconsurfacesanexperimentalstudy |