Demolding in Ultraviolet Nanoimprinting Assisted by a Nanoscale Lubricating Fluid Layer of Condensed Alternative Chlorofluorocarbon
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- Masaru Nakagawa
- Polymer·Hybrid Materials Research Center, Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577
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- Shu Kaneko
- Polymer·Hybrid Materials Research Center, Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577
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- Shunya Ito
- Polymer·Hybrid Materials Research Center, Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577
Abstract
<jats:title>Abstract</jats:title> <jats:p>We demonstrated that demolding in ultraviolet (UV) nanoimprinting was assisted by a nanoscale lubricating fluid layer of a liquefied 1,1,1,3,3-pentafluoropropane (PFP) gas. UV-curable Resin A composed of glycerol 1,3-diglycerolate diacrylate with low PFP absorption showed low surface roughness of 22-nm line-and-space imprint patterns with the smallest line edge roughness (LER) value of 3σ = 1.8 nm. As the molar ratio of 1,6-hexanediol diacrylate with large PFP absorption was increased in the UV-curable resin, the morphological characteristics worsened. Although thin cured films of Resin A possessed a large surface free energy of 57.6 mJ m−2, Resin A could be used for step-and-repeat UV nanoimprinting with bare and fluorinated silica molds. Quartz crystal microbalance measurements suggested that a PFP adsorption layer was formed at a film surface of uncured Resin A upon exposure to PFP gas and functioned as a nanoscale lubricating fluid layer during UV nanoimprinting.</jats:p>
Journal
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- Bulletin of the Chemical Society of Japan
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Bulletin of the Chemical Society of Japan 89 (7), 786-793, 2016-04-22
Oxford University Press (OUP)
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Keywords
Details 詳細情報について
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- CRID
- 1360846644027165056
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- NII Article ID
- 130005253047
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- ISSN
- 13480634
- 00092673
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- Data Source
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- Crossref
- CiNii Articles
- KAKEN