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Structural Properties of a Scaled Gecko Foot-hair

Structural Properties of a Scaled Gecko Foot-hair. Reporter: Dong-Yi Lin Adviser: Wang-Long Li Date:01/08/2008. Bioinspiration and Biomimetics , 2(2007), 1-8 Jose Berengueres, etc. Outline of the Report.

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Structural Properties of a Scaled Gecko Foot-hair

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  1. Structural Properties of a Scaled Gecko Foot-hair Reporter: Dong-Yi Lin Adviser: Wang-Long Li Date:01/08/2008 Bioinspiration and Biomimetics, 2(2007), 1-8 Jose Berengueres, etc..

  2. Outline of the Report • Introduction on the need of the climbing system and some adhesion mechanisms. • Gecko hair structure • Shape effects of gecko hair structure • Prototype Magnetic Pads

  3. 日本東京鐡塔 Introduction on the Needs to Climbing on the Wall • Robots for surveillance/security that can cling and move on vertical surfaces; • Robots for the maintenance/inspection of manmade structures.

  4. Adhesion Mechanisms (b)Electrostatic Chucks (a) Suction Cups Conference Record of the 2001 IEEEVolume 1, Issue , 30 Sep-4 Oct 2001 Page(s):399 - 403 vol.1 Fifth International Conference on IEEE Volume , Issue , 19-22 Jun 1991 Page(s):753 - 758 vol.1 (c) Silk-like Secretion (d)Millimeter-claws Tarantula NATURE | Vol 443 | 28 September 2006 Proc. of SPIE Vol. 6230, 623017, (2006)

  5. Setae of Gecko • The characteristic shapes of the hairs seem related to functions for energy efficient walk.

  6. Principle of Gecko Adhesion

  7. Substitution Force

  8. Compliance of Gecko-like Hair

  9. Lever Effect

  10. Foot-print Effect

  11. Peeling Effect

  12. Stiffness Asymmetry Effect Stiff hairs are easier to detach from a non-ideally-flat surface than softer ones. Ex. Chewing gum

  13. Prototype Magnetic Pads

  14. Prototype Magnetic Pads

  15. Discussion • Drawback: Only climbing up & down! • Improvement:

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