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Fabrication of High Aspect Ratio Micro-Structures with Superhydrophobic and Oleophobic Properties by Using Large-Area Roll-to-Plate Nanoimprint Lithography
| Content Provider | MDPI |
|---|---|
| Author | Atthi, Nithi Dielen, Marc Sripumkhai, Witsaroot Pattamang, Pattaraluck Meananeatra, Rattanawan Saengdee, Pawasuth Thongsook, Oraphan Ranron, Norabadee Pankong, Krynnaras Uahchinkul, Warinrampai Supadech, Jakrapong Klunngien, Nipapan Jeamsaksiri, Wutthinan Veldhuizen, Pim Meulen, Jan ter |
| Copyright Year | 2021 |
| Description | Bio-inspired surfaces with superamphiphobic properties are well known as effective candidates for antifouling technology. However, the limitation of large-area mastering, patterning and pattern collapsing upon physical contact are the bottleneck for practical utilization in marine and medical applications. In this study, a roll-to-plate nanoimprint lithography (R2P NIL) process using Morphotonics’ automated Portis NIL600 tool was used to replicate high aspect ratio (5.0) micro-structures via reusable intermediate flexible stamps that were fabricated from silicon master molds. Two types of Morphotonics’ in-house UV-curable resins were used to replicate a micro-pillar (PIL) and circular rings with eight stripe supporters (C-RESS) micro-structure onto polycarbonate (PC) and polyethylene terephthalate (PET) foil substrates. The pattern quality and surface wettability was compared to a conventional polydimethylsiloxane (PDMS) soft lithography process. It was found that the heights of the R2P NIL replicated PIL and C-RESS patterns deviated less than 6% and 5% from the pattern design, respectively. Moreover, the surface wettability of the imprinted PIL and C-RESS patterns was found to be superhydro- and oleophobic and hydro- and oleophobic, respectively, with good robustness for the C-RESS micro-structure. Therefore, the R2P NIL process is expected to be a promising method to fabricate robust C-RESS micro-structures for large-scale anti-biofouling application. |
| Starting Page | 339 |
| e-ISSN | 20794991 |
| DOI | 10.3390/nano11020339 |
| Journal | Nanomaterials |
| Issue Number | 2 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-01-29 |
| Access Restriction | Open |
| Subject Keyword | Nanomaterials Environmental Engineering High Aspect Ratio Micro-structure Roll-to-plate Nanoimprint Lithography Superhydrophobic Oleophobic Biomimetic Surface Large-area Patterning |
| Content Type | Text |
| Resource Type | Article |
