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Chinese Science Bulletin

, Volume 56, Issue 9, pp 938–944 | Cite as

High-precision bio-replication of synthetic drag reduction shark skin

  • DeYuan ZhangEmail author
  • YuanYue Li
  • Xin Han
  • Xiang Li
  • HuaWei Chen
Open Access
Article Bionic Engineering

Abstract

Nano-long chains were grafted over the replicated micro-grooves of shark skin in a novel attempt to replicate bio-synthetic drag reduction structure with high precision through synthetic bio-replication. Pre-treated shark skin was used as casting template to prepare a flexible female die of silicone rubber by soft die formation. A waterborne epoxy resin was then used to graft long-chains of drag reduction agent and prepare a synthetic drag reduction shark skin with nano-long chain drag reduction interface and lifelike micro-grooves. Replication precision analysis shows that this technology could replicate the complicated three-dimensional morphology of a biological drag reduction surface with high precision. Drag reduction experiments show that the material had an excellent synthetic drag reduction effect, with a maximal drag reduction rate of up to 24.6% over the velocities tested.

Keywords

synthetic drag reduction high-precision shark skin synthetic bio-replication micro-groove nano-long chain 

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Copyright information

© The Author(s) 2011

Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

Open AccessThis is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

Authors and Affiliations

  • DeYuan Zhang
    • 1
    Email author
  • YuanYue Li
    • 1
  • Xin Han
    • 2
  • Xiang Li
    • 1
  • HuaWei Chen
    • 1
  1. 1.Bionic and Micro/Nano/Bio Manufacturing Technology Research CenterBeihang UniversityBeijingChina
  2. 2.School of Agricultural and Food EngineeringShandong University of TechnologyZiboChina

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