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학술지 Superhydrophobic, Antireflective, Flexible Hard Coatings with Mechanically Ultra-resilient Moth-eye Structure for Foldable Displays
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저자
윤혜원, 최광문, 우호균, 오승주, 홍성훈
발행일
202010
출처
Current Applied Physics, v.20 no.10, pp.1163-1170
ISSN
1567-1739
출판사
Elsevier
DOI
https://dx.doi.org/10.1016/j.cap.2020.07.001
협약과제
18PB5200, 나노금형기반 맞춤형 융합제품 상용화지원센터 구축 (RFID 나노융합센서), 홍성훈
초록
Biomimetic inspiration from the moth-eye structure has led to many studies combining nanoimprint lithography (NIL) to realize low cost and large area anti-reflection (AR) coatings. However, the scope of application is severely limited by poor mechanical performance due to the intrinsic properties of the coating materials and the nanosized patterns. In this work, we demonstrate a moth-eye structured epoxy-siloxane molecular hybrid (ME-ESMH) fabricated using single UV-based NIL (UV-NIL) on a colorless polyimide (CPI), to be utilized as a flexible cover window (FCW) for foldable displays. Low reflection, a superhydrophobicity and good inward foldability were achieved, together with excellent thermal and chemical resistance. Furthermore, in situ uniaxial compression tests revealed that the fabricated structure can be elastically deformed and nearly restored to its original shape even after a large degree of compression. Our findings provide an easy-to-integrate solution for flexible hard coatings with superhydrophobic and AR properties, applicable to foldable optoelectronics.
KSP 제안 키워드
Anti-Reflection, Chemical resistance, Colorless polyimide, Epoxy-siloxane, Fabricated structure, Intrinsic property, Low-cost, Mechanical performance, Molecular hybrid, Moth-eye structure, Scope of application