BIOMECHANICS. Jumping on water: Surface tension-dominated jumping of water striders and robotic insects.
Science
; 349(6247): 517-21, 2015 Jul 31.
Article
em En
| MEDLINE
| ID: mdl-26228144
ABSTRACT
Jumping on water is a unique locomotion mode found in semi-aquatic arthropods, such as water striders. To reproduce this feat in a surface tension-dominant jumping robot, we elucidated the hydrodynamics involved and applied them to develop a bio-inspired impulsive mechanism that maximizes momentum transfer to water. We found that water striders rotate the curved tips of their legs inward at a relatively low descending velocity with a force just below that required to break the water surface (144 millinewtons/meter). We built a 68-milligram at-scale jumping robotic insect and verified that it jumps on water with maximum momentum transfer. The results suggest an understanding of the hydrodynamic phenomena used by semi-aquatic arthropods during water jumping and prescribe a method for reproducing these capabilities in artificial systems.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Água
/
Heterópteros
/
Locomoção
Limite:
Animals
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article