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BIOMECHANICS. Jumping on water: Surface tension-dominated jumping of water striders and robotic insects.
Koh, Je-Sung; Yang, Eunjin; Jung, Gwang-Pil; Jung, Sun-Pill; Son, Jae Hak; Lee, Sang-Im; Jablonski, Piotr G; Wood, Robert J; Kim, Ho-Young; Cho, Kyu-Jin.
Afiliação
  • Koh JS; Biorobotics Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Korea. School of Engineering and Applied Sciences and Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA. hyk@snu.ac.kr kjcho@snu.ac.k
  • Yang E; Micro Fluid Mechanics Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Korea. hyk@snu.ac.kr kjcho@snu.ac.kr.
  • Jung GP; Biorobotics Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Korea.
  • Jung SP; Biorobotics Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Korea.
  • Son JH; Laboratory of Behavioral Ecology and Evolution, School of Biological Sciences, Seoul National University, Seoul 151-742, Korea.
  • Lee SI; Laboratory of Behavioral Ecology and Evolution, School of Biological Sciences, Seoul National University, Seoul 151-742, Korea. Institute of Advanced Machines and Design, Seoul National University, Seoul 151-744, Korea.
  • Jablonski PG; Laboratory of Behavioral Ecology and Evolution, School of Biological Sciences, Seoul National University, Seoul 151-742, Korea. Museum and Institute of Zoology, Polish Academy of Sciences, Warsaw 00-679, Poland.
  • Wood RJ; School of Engineering and Applied Sciences and Wyss Institute for Biologically Inspired Engineering, Harvard University, Cambridge, MA 02138, USA.
  • Kim HY; Micro Fluid Mechanics Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Korea. Institute of Advanced Machines and Design, Seoul National University, Seoul 151-744, Korea.
  • Cho KJ; Biorobotics Laboratory, Department of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744, Korea. Institute of Advanced Machines and Design, Seoul National University, Seoul 151-744, Korea.
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.
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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
Texto completo
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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