Development of UV-curable liquid for in-liquid fluorescence alignment in ultraviolet nanoimprint lithography

Kento Ochiai, Eri Kikuchi, Yota Ishito, Mari Kumagai, Takahiro Nakamura, Masaru Nakagawa

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We studied a fluorescent UV-curable resin suitable for fluorescence alignment in UV nanoimprinting. The addition of a cationic fluorescent dye caused radical photopolymerization of a UV-curable resin by exposure to visible excitation light for fluorescence microscope observation. The microscope observation of a resin film prepared by pressing resin droplets on a silica substrate with a fluorinated silica superstrate revealed that the cationic dye molecules were preferably adsorbed onto the silica surface. It was indicated that the dye molecules concentrated on the silica surface may cause the photocuring. A nonionic fluorescent dye was selected owing to its low polar symmetrical structure and its solubility parameter close to monomers. The fluorescent UV-curable resin with the nonionic dye showed uncured stability to exposure to visible excitation light for 30 min with a light intensity of 8.5mWcm-2 detected at 530 nm.

本文言語English
論文番号06HG02
ジャーナルJapanese journal of applied physics
57
6
DOI
出版ステータスPublished - 2018 6

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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