ナミハダニの平坦面に対する付着力と付着機構(機械要素,潤滑,工作,生産管理など)

概要

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Adhesion of a spider mite to a surface of a flat smooth plate is investigated as a model for micromachine parts to adhere to and move on such surfaces. Adhesive force is measured using a setup with a cantilever at the end of which the plate is mounted. The measurement is carried out under various conditions in which plate material, surface roughness of a plate and environmental humidity are varied. The mechanism of adhesion of leg tips of a spider mite to a plate surface is also discussed. Of the forces acting between them, force from dispersion interactions is the most dominant because (1) there is high correlation between adhesive force and the component of dispersion force of surface energy in the surfaces tested : adhesive force of 8.7 μN for glass, 9.7 μN for mica, 9.9 μN for silicon and 12.1 μN for gold; and (2) high humidity and high surface roughness decrease adhesive force. For strong adhesion based on work of adhesion, spider mites have tenent hairs with a bell-shaped tip.
社団法人日本機械学会の論文
2005-06-25