2012
DOI: 10.1007/s11427-012-4286-y
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Abstract: The study of the adhesion of millions of setae on the toes of geckos has been advanced in recent years with the emergence of new technology and measurement methods. The theory of the mechanism of adhesion by van der Waals forces is now accepted and broadly understood. However, this paper presents limitations of this theory and gives a new hypothesis of the biomechanism of gecko adhesion. The findings are obtained through measurements of the magnitude of the adhesion of setae under three different conditions, t… Show more

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Cited by 12 publications
(5 citation statements)
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“…This ability is attractive for scientists to know how geckos adhere on various rough and inclined substrates by hierarchical seta on toes and by regulation reaction forces (RFs). The gecko's outstanding moving ability depends upon many synergetic effects, such as elaborate morphological micro-structure (Ernst and Ruibal 1967, Williams and Peterson 1982, Bauer and Russell 1988, super adhesive ability (Irschick et al 1996, Autumn et al 2000, Huber et al 2005, motion coordination among legs under stance phase in crawling posture (Li and Dai 2012) and fine perception to the contact and adhesive forces up to the resolution to mN (Guo et al 2012). The super adhesive ability depends largely on van der Waals forces and/or capillary forces of the half million hairs (or setae) on the toe (Autumn et al 2000, Huber et al 2005.…”
Section: Introductionmentioning
confidence: 99%
“…This ability is attractive for scientists to know how geckos adhere on various rough and inclined substrates by hierarchical seta on toes and by regulation reaction forces (RFs). The gecko's outstanding moving ability depends upon many synergetic effects, such as elaborate morphological micro-structure (Ernst and Ruibal 1967, Williams and Peterson 1982, Bauer and Russell 1988, super adhesive ability (Irschick et al 1996, Autumn et al 2000, Huber et al 2005, motion coordination among legs under stance phase in crawling posture (Li and Dai 2012) and fine perception to the contact and adhesive forces up to the resolution to mN (Guo et al 2012). The super adhesive ability depends largely on van der Waals forces and/or capillary forces of the half million hairs (or setae) on the toe (Autumn et al 2000, Huber et al 2005.…”
Section: Introductionmentioning
confidence: 99%
“…To clearly illuminate the actuation of the IPMC in driving the PMVS micropillars, a 2 mm thick, colored PDMS membrane was attached to the IPMC’s surface (Figure ). Actuated by an alternating current of 2.0 V, the IPMC-driven, thick PDMS membrane showed a stable electromechanical response, swinging from side to side with a swing angle of ±20°, matching the abduction angle of a gecko’s foot toes . PMVS micropillars were attached to the IPMC surface through two layers of PDMS colloid binders, with a total thickness of 0.15 mm.…”
Section: Results and Discussionmentioning
confidence: 99%
“…Actuated by an alternating current of 2.0 V, the IPMC-driven, thick PDMS membrane showed a stable electromechanical response, swinging from side to side with a swing angle of ±20°, matching the abduction angle of a gecko's foot toes. 19 PMVS micropillars were attached to the IPMC surface through two layers of PDMS colloid binders, 41 with a total thickness of As with a gecko's muscles abducting or adducting its setae, the blocking force generated from the IPMC imposed normal pressure to push or pull the attached micropillars for attachment or detachment, respectively. 3.6.…”
Section: Electromechanical Propertiesmentioning
confidence: 99%
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