Shape insensitive optimal adhesion of nanoscale fibrillar structures.

@article{Gao2004ShapeIO,
  title={Shape insensitive optimal adhesion of nanoscale fibrillar structures.},
  author={Huajian Gao and Haimin Yao},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2004},
  volume={101 21},
  pages={7851-6}
}
Gecko and many insects have adopted nanoscale fibrillar structures on their feet as adhesion devices. Here, we consider adhesion between a single fiber and a substrate by van der Waals or electrostatic interactions. For a given contact area A, the theoretical pull-off force of the fiber is sigma(th)A where sigma(th) is the theoretical strength of adhesion. We show that it is possible to design an optimal shape of the tip of the fiber to achieve the theoretical pull-off force. However, such… CONTINUE READING
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