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Author

Park, Soojin
Nano-Functional Materials Lab
Research Interests
  • Block Copolymers, nanostructured materials for Lithium-Ion batteries, wearable and stretchable energy storage applications

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Extremely Superhydrophobic Surfaces with Micro- and Nanostructures Fabricated by Copper Catalytic Etching

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Title
Extremely Superhydrophobic Surfaces with Micro- and Nanostructures Fabricated by Copper Catalytic Etching
Author
Lee, Jung-PilChoi, SinhoPark, Soojin
Keywords
Catalytic etching; Chemical-etching process; Chemically modified; Cu nanoparticles; Electroless Cu plating; Etching condition; Hydrophobic properties; Low surface energy; Micro and nanostructures; Silicon surfaces; SIMPLE method; Super-hydrophobic surfaces; Superhydrophobic behavior; Thin layers; Water contact angle
Issue Date
201101
Publisher
AMER CHEMICAL SOC
Citation
LANGMUIR, v.27, no.2, pp.809 - 814
Abstract
We demonstrate a simple method for the fabrication of rough silicon surfaces with micro- and nanostructures, which exhibited superhydrophobic behaviors. Hierarchically rough silicon surfaces were prepared by copper (Cu)-assisted chemical etching process where Cu nanoparticles having particle size of 10-30 nm were deposited on silicon surface, depending on the period of time of electroless Cu plating. Surface roughness was controlled by both the size of Cu nanoparticles and etching conditions. As-synthesized rough silicon surfaces showed water contact angles ranging from 93 degrees to 149 degrees. Moreover, the hierarchically rough silicon surfaces were chemically modified by spin-coating of a thin layer of Teflon precursor with low surface energy. And thus it exhibited nonsticky and enhanced hydrophobic properties with extremely high contact angle of nearly 180 degrees.
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DOI
http://dx.doi.org/10.1021/la1045354
ISSN
0743-7463
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