Nanopatterned Polymer Molds Using Anodized Aluminum Templates for Anti-Reflective Coatings

• DOI: 10.3390/polym13193333
• Publication Date: 2021-09-30T04:03:42Z
• Authors: Soon Hyuk Lim; Nguyễn Hoàng Ly; Jung A. Lee; Ji Eun Kim; Se-Woong La; Vu Thi Huong; Thi-Giang Tran; Ngoc Thanh Ho; Seung Man Noh; Sang Jun Son; Sang-Woo Joo
• Keywords: Template; Anodizing

This work introduces a facile geometry-controlled method for the fabrication of embossed and engraved polymeric moth-eye-inspired nanostructures in imprinting molds using anodic aluminum oxide (AAO) templates, resulting novel anti-reflective transparent coating. The moth-eye are prepared directly on surface flexible polyethylene terephthalate (PET) substrate. As prerequisite procedure, UV-curable polyurethane acrylate resin is spun PET. shape can then be adjusted by controlling size nanopores AAO templates. Both concaved polymer were successfully mounted PET Embossed replica master templates combination with an process. revealed field-emission electron microscope (FE-SEM) images, conical nanopatterns template diameter ~90 nm depth ~100 nm, create homogeneous morphology nanostructure. depths 300 500 amalgamated structures their apexes. In addition, dip-imprinting process layers was implemented to yield mold assembly 100 Considering that may crumbled due protuberant shapes, geometries have advantage stability certain application concerning physical degradation along higher transmission ~2%, despite somewhat nonuniform structure. experimental theoretical results this study indicate layer has potential use coating applications films.