Seung-Mo Lee and Tai Hun Kwon 2006 Nanotechnology 17 3189 doi:10.1088/0957-4484/17/13/019
Seung-Mo Lee and Tai Hun Kwon1
Show affiliationsMany plant leaves found in nature are known to exhibit a characteristic of superhydrophobicity ('lotus leaf effect'). The present study proposes a mass-production method of highly hydrophobic surfaces by simply replicating the highly hydrophobic plant leaf surfaces in two steps: the first step of making a nickel mould via electroforming and the second step of replication via a UV-nanoimprint lithography. Making a nickel mould, either a plant leaf or its negative polymer replica is used as a mandrel in electroforming, and final products become positive or negative polymer replicas of a plant leaf, respectively. It is found that the nickel-mould making using the plant leaf as a mandrel is quite successful and the final products in the form of a positive replica are better than those in the form of a negative replica in terms of replication quality and hydrophobicity. Contact angle values of the positive replicas are less than those of the natural leaves' surfaces by only 2°–5°.
81.20.Hy Forming; molding, extrusion etc.
85.85.+j Micro- and nano-electromechanical systems (MEMS/NEMS) and devices
Issue 13 (14 July 2006)
Received 21 February 2006, in final form 7 May 2006
Published 7 June 2006
Seung-Mo Lee and Tai Hun Kwon 2006 Nanotechnology 17 3189
Chengxiang Ding et al 2007 J. Phys. A: Math. Theor. 40 3305
J Y Laval and T S Orlova 2003 Supercond. Sci. Technol. 16 1139
J L P Karthauser and P M Saffin 2006 Class. Quantum Grav. 23 4615
Carl J. Grillmair et al. 1998 The Astronomical Journal 115 144
R De Luca 2009 Supercond. Sci. Technol. 22 125010
Zhenwen Dai et al 2002 J. Phys. B: At. Mol. Opt. Phys. 35 3111
Nagayoshi Ohashi et al 1999 ApJ 518 L41
Jie Zhang et al 2009 New J. Phys. 11 113003
Shuichi Murakami 1998 J. Phys. A: Math. Gen. 31 6367