Replication of flexible polymer membranes with geometry-controllable nano-apertures via a hierarchical mould-based dewetting

Hyesung Cho; Junsoo Kim; Hyunchul Park; Jung Won Bang; Moon Seop Hyun; Yongjun Bae; Laura Ha; Do Yoon Kim; Seong Min Kang; Tae Jung Park; Soonmin Seo; Mansoo Choi; Kahp-Yang Suh

doi:10.1038/ncomms4137

Replication of flexible polymer membranes with geometry-controllable nano-apertures via a hierarchical mould-based dewetting

Nat Commun. 2014:5:3137. doi: 10.1038/ncomms4137.

Authors

Hyesung Cho¹, Junsoo Kim², Hyunchul Park², Jung Won Bang³, Moon Seop Hyun⁴, Yongjun Bae⁵, Laura Ha⁶, Do Yoon Kim⁷, Seong Min Kang⁵, Tae Jung Park⁸, Soonmin Seo⁷, Mansoo Choi⁹, Kahp-Yang Suh¹⁰

Affiliations

¹ 1] Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea [2].
² 1] Division of WCU Multiscale Mechanical Design, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea [2].
³ Division of WCU Multiscale Mechanical Design, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
⁴ 1] Measurement & Analysis Team, National Nanofab Center, Daejeon 305-806, Korea [2] Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea.
⁵ Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
⁶ Interdisciplinary Program of Bioengineering, Seoul National University, Seoul 151-742, Korea.
⁷ College of BioNano Technology, Gachon University, Gyeonggi 461-701, Korea.
⁸ Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea.
⁹ 1] Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea [2] Division of WCU Multiscale Mechanical Design, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
¹⁰ 1] Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea [2] Division of WCU Multiscale Mechanical Design, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea [3] Interdisciplinary Program of Bioengineering, Seoul National University, Seoul 151-742, Korea [4].

PMID: 24451920
DOI: 10.1038/ncomms4137

Abstract

Membranes with nano-apertures are versatile templates that possess a wide range of electronic, optical and biomedical applications. However, such membranes have been limited to silicon-based inorganic materials to utilize standard semiconductor processes. Here we report a new type of flexible and free-standing polymeric membrane with nano-apertures by exploiting high-wettability difference and geometrical reinforcement via multiscale, multilevel architecture. In the method, polymeric membranes with various pore sizes (50-800 nm) and shapes (dots, lines) are fabricated by a hierarchical mould-based dewetting of ultraviolet-curable resins. In particular, the nano-pores are monolithically integrated on a two-level hierarchical supporting layer, allowing for the rapid (<5 min) and robust formation of multiscale and multilevel nano-apertures over large areas (2 × 2 cm(2)).

Publication types

Research Support, Non-U.S. Gov't