Abstract
Gecko’s foot hairs exhibit significant frictional anisotropy that enables a strong foot grip in a specific direction and an easy detachment in the opposite direction. In this study, we fabricate adhesive devices with frictional anisotropy mimicking gecko’s foot hair based on oblique micro-beam arrays. The devices adhesion force is strongly anisotropic along the beam tilting direction and depends on the stress distribution at the contact area which, in turn, is affected by the geometry of the beam tips. This dependence is investigated by fabricating and testing micro beam arrays with various tip shapes.
Highlights
It is usually challenging to achieve surfaces that are highly adhesive, yet can be detached
These findings were corroborated by measurements of the adhesive force of a single gecko foot hair [5]
Adhesive devices consisting of silicone rubber oblique beam arrays were fabricated, and their detachment force was experimentally investigated as a function of the pulling angle
Summary
It is usually challenging to achieve surfaces that are highly adhesive, yet can be detached . Geckos’ ability to climb vertical walls and hang upside-down on ceilings have attracted the attention of numerous scientists who, through careful observations, have linked these remarkable properties to microscopic hairs present on the surface of gecko’s foot [1,2,3,4]. These findings were corroborated by measurements of the adhesive force of a single gecko foot hair [5]. Several devices mimicking these foot hairs were fabricated, which showed improved adhesive properties [8,9,10,11,12,13,14]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
