On/off switching of adhesion in gecko‐inspired adhesives

Autor: Tetsuo Yamaguchi, Akira Akamine, Yoshinori Sawae
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Biosurface and Biotribology, Vol 7, Iss 2, Pp 83-89 (2021)
Druh dokumentu: article
ISSN: 2405-4518
DOI: 10.1049/bsb2.12003
Popis: Abstract In this study, the adhesion‐detachment behaviour of a gecko‐inspired adhesive pad was investigated to understand the on/off switching mechanisms of adhesion in gecko feet. A macroscopic spatula model was fabricated using silicone rubber, and adhesion tests combining lateral sliding and vertical debonding were conducted. It was observed that the contact state and the adhesion force of the pad vary considerably with the direction of lateral sliding prior to debonding, and that the pad achieves adhesion during debonding even when it loses contact due to excess lateral sliding. These results explain the mechanisms behind the on/off switching and stable adhesion of gecko feet, and suggest the possibility of developing new‐generation adhesives capable of switchable adhesion.
Databáze: Directory of Open Access Journals