Adhesion design maps for fibrillar adhesives: the effect of shape.

The biomimetic reproduction of adhesion organs, as found in flies, beetles and geckoes, has become a topic of intense research over the past years. Successes, however, have so far been limited. This is due to the vast range of parameters involved, including fibril size, elastic modulus, contact shape, surface roughness and ambient humidity. In previous studies, design and materials selection charts to determine the optimum materials and design combination for dry adhesive systems have been established. The effect of shape on the adhesive properties of single fibers and fiber arrays has also been a research focus. In this paper both approaches are combined to provide more advanced guidelines for the design of optimal adhesive structures.

[1]  David Tabor,et al.  The effect of surface roughness on the adhesion of elastic solids , 1975, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[2]  Ralph Spolenak,et al.  Adhesion design maps for bio-inspired attachment systems. , 2005, Acta biomaterialia.

[3]  K. Kendall.  Thin-film peeling-the elastic term , 1975 .

[4]  D. Maugis.  Contact, Adhesion and Rupture of Elastic Solids , 2000 .

[5]  K. Autumn,et al.  Mechanisms of Adhesion in Geckos1 , 2002, Integrative and comparative biology.

[6]  Ralph Spolenak,et al.  Evidence for capillarity contributions to gecko adhesion from single spatula nanomechanical measurements. , 2005, Proceedings of the National Academy of Sciences of the United States of America.

[7]  Pavel Neuzil,et al.  The nature of the gecko lizard adhesive force. , 2005, Biophysical journal.

[8]  A. Jagota,et al.  Design of biomimetic fibrillar interfaces: 1. Making contact , 2004, Journal of The Royal Society Interface.

[9]  R. Full,et al.  Evidence for van der Waals adhesion in gecko setae , 2002, Proceedings of the National Academy of Sciences of the United States of America.

[10]  Zum Haftproblem der Gecko-Füsse , 1967, Naturwissenschaften.

[11]  R. Full,et al.  Adhesive force of a single gecko foot-hair , 2000, Nature.

[12]  T. Courtney,et al.  Mechanical Behavior of Materials , 1990 .

[13]  K. Kendall.  The adhesion and surface energy of elastic solids , 1971 .

[14]  Non-Hertzian contact of elastic spheres , 1975 .

[15]  B. N. J. Perssona.  On the mechanism of adhesion in biological systems , 2003 .

[16]  Ralph Spolenak,et al.  Resolving the nanoscale adhesion of individual gecko spatulae by atomic force microscopy , 2005, Biology Letters.

[17]  Lijie Ci,et al.  Gecko-inspired carbon nanotube-based self-cleaning adhesives. , 2008, Nano letters.

[18]  Bo N. J. Persson,et al.  On the mechanism of adhesion in biological systems , 2003 .

[19]  Anton Dammes de Pater,et al.  The Mechanics of the contact between deformable bodies : proceedings of the symposium of the International Union of Theoretical and Applied Mechanics (IUTAM), Enschede, Netherlands, 20-23 August 1974 , 1975 .

[20]  Liangti Qu,et al.  Gecko‐Foot‐Mimetic Aligned Single‐Walled Carbon Nanotube Dry Adhesives with Unique Electrical and Thermal Properties , 2007 .

[21]  B. N. J. Perssona.  The effect of surface roughness on the adhesion of elastic solids , 2001 .

[22]  Huajian Gao,et al.  Effects of contact shape on the scaling of biological attachments , 2005, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences.

[23]  Stanislav N. Gorb,et al.  Towards a micromechanical understanding of biological surface devices , 2002 .

[24]  M. Ashby,et al.  Deformation-Mechanism Maps: The Plasticity and Creep of Metals and Ceramics , 1982 .

[25]  J. A. Peterson,et al.  Convergent and Alternative Designs in the Digital Adhesive Pads of Scincid Lizards , 1982, Science.

[26]  B. Bhushan,et al.  Introduction to Tribology , 2002 .

[27]  Size and shape effects in bioinspired fibrillar adhesives , 2007 .

[28]  Bharat Bhushan,et al.  The adhesion model considering capillarity for gecko attachment system , 2008, Journal of The Royal Society Interface.

[29]  B N J Persson,et al.  Influence of surface roughness on adhesion between elastic bodies. , 2005, Physical review letters.

[30]  S. Gorb,et al.  From micro to nano contacts in biological attachment devices , 2003, Proceedings of the National Academy of Sciences of the United States of America.

[31]  B. Persson,et al.  Adhesion between elastic bodies with randomly rough surfaces. , 2002, Physical review letters.

[32]  M. Meyyappan,et al.  Interfacial energy and strength of multiwalled-carbon-nanotube-based dry adhesive , 2006 .