Adhesion of echinoderm tube feet to rough surfaces
نویسندگان
چکیده
منابع مشابه
Adhesion of echinoderm tube feet to rough surfaces.
Echinoderms attach strongly and temporarily to the substratum by means of specialized organs, the podia or tube feet. The latter consist of a basal extensible cylinder, the stem, which bears an apical flattened disc. The disc repeatedly attaches to and detaches from the substratum through adhesive and de-adhesive secretions. In their activities, echinoderms have to cope with substrata of varyin...
متن کاملEchinoderm-inspired Tube Feet for Robust Locomotion and Adhesion
Movement in echinoderms is facilitated by the coordinated activity of thousands of individually addressable and reversibly adhesive tube feet. To investigate the potential applicability of these unique biological actuators as a locomotory structure for robotics applications, we describe here the design, fabrication, and evaluation of an elastomeric structural analogue. The synthetic tube feet w...
متن کاملAdhesion of elastic films on mound rough surfaces
In this work, we have investigated the adhesive behaviour of elastic films in contact with solid substrates, which are bounded by mound surface roughness. This type of roughness is described by the rms roughness amplitude w, the average mound separation K, and the system correlation length f. It is shown that both lateral roughness parameters K and f strongly influence adhesive characteristics....
متن کاملAdhesion between elastic bodies with randomly rough surfaces.
I have developed a theory of adhesion between an elastic solid and a hard randomly rough substrate. The theory takes into account the fact that partial contact may occur between the solids on all length scales. I present numerical results for the case where the substrate surface is self-affine fractal. When the fractal dimension is close to 2, complete contact typically occurs in the macroasper...
متن کاملContact between rough surfaces and a criterion for macroscopic adhesion.
At the molecular scale, there are strong attractive interactions between surfaces, yet few macroscopic surfaces are sticky. Extensive simulations of contact by adhesive surfaces with roughness on nanometer to micrometer scales are used to determine how roughness reduces the area where atoms contact and thus weakens adhesion. The material properties, adhesive strength, and roughness parameters a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2005
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.01683