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Superhydrophobic Surfaces: Nanograssed Micropyramidal Architectures for Continuous Dropwise Condensation (Adv. Funct. Mater. 24/2011)

  1. Xuemei Chen1,
  2. Jun Wu2,
  3. Ruiyuan Ma2,
  4. Meng Hua1,
  5. Nikhil Koratkar3,*,
  6. Shuhuai Yao2,*,
  7. Zuankai Wang1,*

Article first published online: 13 DEC 2011

DOI: 10.1002/adfm.201190115

Issue

Advanced Functional Materials

Advanced Functional Materials

Volume 21, Issue 24, page 4597, December 20, 2011

Additional Information

How to Cite

Chen, X., Wu, J., Ma, R., Hua, M., Koratkar, N., Yao, S. and Wang, Z. (2011), Superhydrophobic Surfaces: Nanograssed Micropyramidal Architectures for Continuous Dropwise Condensation (Adv. Funct. Mater. 24/2011). Adv. Funct. Mater., 21: 4597. doi: 10.1002/adfm.201190115

Author Information

  1. 1

    Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Hong Kong 999077, China

  2. 2

    Department of Mechanical Engineering, The Hong Kong University of Science and Technology, Hong Kong 999077, China

  3. 3

    Department of Mechanical Engineering and Department of Materials, Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA

*Department of Mechanical Engineering and Department of Materials, Science and Engineering, Rensselaer Polytechnic Institute, Troy, NY 12180, USA

Publication History

  1. Issue published online: 13 DEC 2011
  2. Article first published online: 13 DEC 2011

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Keywords:

  • superhydrophobic surface;
  • dropwise condensation;
  • heterogeneous wettability;
  • hierarchical roughness
Thumbnail image of graphical abstract

A surface with nanograssed micropyramidal arrays that allows for enhanced drop nucleation and departure simultaneously is successfully developed by harnessing the hierarchical roughness and heterogeneous wetting. On page 4617, Nikhil Koratkar, Shuhuai Yao, Zuankai Wang, and co-workers show that the surface yields a global superhydrophobity as well as local wettable patches (smooth structure). Synergistic co-operation between the hierarchical structure contributes directly to a continuous process of nucleation, coalescence, departure, and re-nucleation, enabling sustained drop-wise condensation over prolonged periods.

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