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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

Change of contact angle by fabricated pattern using hot embossing lithography. (a) Before fabricating patterns and (b) after fabricating patterns.
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Figure 3: Change of contact angle by fabricated pattern using hot embossing lithography. (a) Before fabricating patterns and (b) after fabricating patterns.

Mentions: The contact angles of the unpatterned and hot-embossed fluorinated polymer surfaces are shown in Figure 3. Prior to the hot embossing process used to form the nano-sized patterns, the contact angle of the unpatterned fluorinated polymer surface was 105°. After the hot embossing process, the contact angle of the fluorinated polymer-coated flexible PET mold was increased to 110°. This result demonstrates that the surface energy of the fluorinated polymer was inherently high, so that it can be used as an imprinting mold to fabricate micro- to nano-sized patterns without the need to coat it with an anti-stiction layer.


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)

Change of contact angle by fabricated pattern using hot embossing lithography. (a) Before fabricating patterns and (b) after fabricating patterns.
© Copyright Policy - open-access
Related In: Results  -  Collection

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

Figure 3: Change of contact angle by fabricated pattern using hot embossing lithography. (a) Before fabricating patterns and (b) after fabricating patterns.
Mentions: The contact angles of the unpatterned and hot-embossed fluorinated polymer surfaces are shown in Figure 3. Prior to the hot embossing process used to form the nano-sized patterns, the contact angle of the unpatterned fluorinated polymer surface was 105°. After the hot embossing process, the contact angle of the fluorinated polymer-coated flexible PET mold was increased to 110°. This result demonstrates that the surface energy of the fluorinated polymer was inherently high, so that it can be used as an imprinting mold to fabricate micro- to nano-sized patterns without the need to coat it with an anti-stiction layer.

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