Reactive-monolayer-assisted thermal nanoimprint lithography

Shoichi Kubo, Masaru Nakagawa

    Research output: Contribution to journalArticlepeer-review

    2 Citations (Scopus)

    Abstract

    This article gives an overview of reactive-monolayer-assisted thermal nanoimprint lithography (R-TNIL) for the fabrication of patterned metal thin layers on substrates by simple wet etching using a thermoplastic polymer resist layer as-sisted by photochemically grafted polymer layer. A photoreactive monolayer causing a photoinduced graft reaction on the metal surface anchors interfacial resist polymers, resulting in the suppression of thermally induced dewetting of the resist layer and the improvement of lateral pattern resolution of metal thin layers. Line widths of metal patterns could be tuned by controlled side etching. Enhanced adhesion of resist lay-ers was revealed by lateral force curves measured by scanning probe microscopy. It was demonstrated as an application that transparent conductive substrates having metal mesh structures were fabricated by R-TNIL. We also demonstrated R-TNIL involving electrodeposition, which allowed the preparation of metal patterns with controlled aspect ratio. It was proved that the photoreactive monolayer played im-portant roles to fabricate submicrometer patterns of metal thin layers.

    Original languageEnglish
    Pages (from-to)189-196
    Number of pages8
    JournalJournal of Photopolymer Science and Technology
    Volume25
    Issue number2
    DOIs
    Publication statusPublished - 2012

    Keywords

    • Electrodeposition
    • Metal thin film
    • Nanoimprint lithography
    • Patterning
    • Photoreactive monolayer
    • Wet etching

    ASJC Scopus subject areas

    • Polymers and Plastics
    • Organic Chemistry
    • Materials Chemistry

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