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Fabrication of flexible UV nanoimprint mold with fluorinated polymer-coated PET film.

Shin JH, Lee SH, Byeon KJ, Han KS, Lee H, Tsunozaki K - Nanoscale Res Lett (2011)

Bottom Line: Therefore, the development of low-cost, transparent, and flexible templates is essential.In this study, a flexible polyethylene terephthalate (PET) film coated with a fluorinated polymer material was used as an imprinting mold.Then, the replicated pattern of the fluorinated polymer, coated on the flexible PET film, was used as a template for the UV nanoimprint process without any anti-stiction coating process.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Materials Science and Engineering, Korea University, Anam-dong 5-ga, Seongbuk-gu, Seoul 136-713, South Korea. heonlee@korea.ac.kr.

ABSTRACT
UV curing nanoimprint lithography is one of the most promising techniques for the fabrication of micro- to nano-sized patterns on various substrates with high throughput and a low production cost. The UV nanoimprint process requires a transparent template with micro- to nano-sized surface protrusions, having a low surface energy and good flexibility. Therefore, the development of low-cost, transparent, and flexible templates is essential. In this study, a flexible polyethylene terephthalate (PET) film coated with a fluorinated polymer material was used as an imprinting mold. Micro- and nano-sized surface protrusion patterns were formed on the fluorinated polymer layer by the hot embossing process from a Si master template. Then, the replicated pattern of the fluorinated polymer, coated on the flexible PET film, was used as a template for the UV nanoimprint process without any anti-stiction coating process. In this way, the micro- to nano-sized patterns of the original master Si template were replicated on various substrates, including a flat Si substrate and curved acryl substrate, with high fidelity using UV nanoimprint lithography.

No MeSH data available.


Related in: MedlinePlus

SEM micrographs of imprinted 20- to approximately 30-nm-sized patterns by UV nanoimprint lithography. Using hot-embossed fluorinated polymer-coated PET film (a) imprinted patterns on a flat Si substrate and (b) imprinted patterns on a curved acryl substrate.
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Figure 8: SEM micrographs of imprinted 20- to approximately 30-nm-sized patterns by UV nanoimprint lithography. Using hot-embossed fluorinated polymer-coated PET film (a) imprinted patterns on a flat Si substrate and (b) imprinted patterns on a curved acryl substrate.

Mentions: The SEM micrographs of the imprinted micro- and nano-sized patterns made by UV nanoimprint lithography using the hot-embossed fluorinated polymer-coated PET film are shown in Figure 7. The hot-embossed flexible PET film, coated with the fluorinated polymer, was used as the UV imprint mold. Figure 7a,b,c show the imprinted resist patterns on the flat Si substrate using UV nanoimprint lithography. The shape and size of the micro-sized, complex patterns of the Si master mold were replicated with high fidelity on the flat Si substrate. Even sub-200-nm-sized nanopatterns were able to be finely replicated. Figure 7d,e,f shows the imprinted resist patterns on the curved acryl substrate. Due to the uniform pressing of the flexible PET film mold over the curved substrate, micro- and nano-sized patterns were able to be successfully imprinted on a curved acryl substrate. These results imply that a hot-embossed flexible PET film, coated with a fluorinated polymer layer, can be used as a mold for the UV nanoimprint lithography of various substrates, including non-planar ones. Furthermore, 20- to approximately 30-nm-sized line/space patterns were fabricated on the flat Si substrate and on the curved acryl substrate. As shown in Figure 8, these patterns were fabricated very finely.


Fabrication of flexible UV nanoimprint mold with fluorinated polymer-coated PET film.

Shin JH, Lee SH, Byeon KJ, Han KS, Lee H, Tsunozaki K - Nanoscale Res Lett (2011)

SEM micrographs of imprinted 20- to approximately 30-nm-sized patterns by UV nanoimprint lithography. Using hot-embossed fluorinated polymer-coated PET film (a) imprinted patterns on a flat Si substrate and (b) imprinted patterns on a curved acryl substrate.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211878&req=5

Figure 8: SEM micrographs of imprinted 20- to approximately 30-nm-sized patterns by UV nanoimprint lithography. Using hot-embossed fluorinated polymer-coated PET film (a) imprinted patterns on a flat Si substrate and (b) imprinted patterns on a curved acryl substrate.
Mentions: The SEM micrographs of the imprinted micro- and nano-sized patterns made by UV nanoimprint lithography using the hot-embossed fluorinated polymer-coated PET film are shown in Figure 7. The hot-embossed flexible PET film, coated with the fluorinated polymer, was used as the UV imprint mold. Figure 7a,b,c show the imprinted resist patterns on the flat Si substrate using UV nanoimprint lithography. The shape and size of the micro-sized, complex patterns of the Si master mold were replicated with high fidelity on the flat Si substrate. Even sub-200-nm-sized nanopatterns were able to be finely replicated. Figure 7d,e,f shows the imprinted resist patterns on the curved acryl substrate. Due to the uniform pressing of the flexible PET film mold over the curved substrate, micro- and nano-sized patterns were able to be successfully imprinted on a curved acryl substrate. These results imply that a hot-embossed flexible PET film, coated with a fluorinated polymer layer, can be used as a mold for the UV nanoimprint lithography of various substrates, including non-planar ones. Furthermore, 20- to approximately 30-nm-sized line/space patterns were fabricated on the flat Si substrate and on the curved acryl substrate. As shown in Figure 8, these patterns were fabricated very finely.

Bottom Line: Therefore, the development of low-cost, transparent, and flexible templates is essential.In this study, a flexible polyethylene terephthalate (PET) film coated with a fluorinated polymer material was used as an imprinting mold.Then, the replicated pattern of the fluorinated polymer, coated on the flexible PET film, was used as a template for the UV nanoimprint process without any anti-stiction coating process.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Materials Science and Engineering, Korea University, Anam-dong 5-ga, Seongbuk-gu, Seoul 136-713, South Korea. heonlee@korea.ac.kr.

ABSTRACT
UV curing nanoimprint lithography is one of the most promising techniques for the fabrication of micro- to nano-sized patterns on various substrates with high throughput and a low production cost. The UV nanoimprint process requires a transparent template with micro- to nano-sized surface protrusions, having a low surface energy and good flexibility. Therefore, the development of low-cost, transparent, and flexible templates is essential. In this study, a flexible polyethylene terephthalate (PET) film coated with a fluorinated polymer material was used as an imprinting mold. Micro- and nano-sized surface protrusion patterns were formed on the fluorinated polymer layer by the hot embossing process from a Si master template. Then, the replicated pattern of the fluorinated polymer, coated on the flexible PET film, was used as a template for the UV nanoimprint process without any anti-stiction coating process. In this way, the micro- to nano-sized patterns of the original master Si template were replicated on various substrates, including a flat Si substrate and curved acryl substrate, with high fidelity using UV nanoimprint lithography.

No MeSH data available.


Related in: MedlinePlus