Replication of flexible polymer membranes with geometry-controllable nano-apertures via a hierarchical mould-based dewetting.
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)).
1] Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea [2].
Hyesung
H
Cho
1] Division of WCU Multiscale Mechanical Design, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea [2].
Junsoo
J
Kim
1] Division of WCU Multiscale Mechanical Design, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea [2].
Hyunchul
H
Park
Division of WCU Multiscale Mechanical Design, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
Jung
J
Won Bang
1] Measurement & Analysis Team, National Nanofab Center, Daejeon 305-806, Korea [2] Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea.
Moon
M
Seop Hyun
Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
Yongjun
Y
Bae
Interdisciplinary Program of Bioengineering, Seoul National University, Seoul 151-742, Korea.
Laura
L
Ha
College of BioNano Technology, Gachon University, Gyeonggi 461-701, Korea.
Do
D
Yoon Kim
Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea.
Seong
S
Min Kang
Department of Chemistry, Chung-Ang University, Seoul 156-756, Korea.
Tae
T
Jung Park
College of BioNano Technology, Gachon University, Gyeonggi 461-701, Korea.
Soonmin
S
Seo
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.
Mansoo
M
Choi
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].
Kahp-Yang
KY
Suh