3989424
doi
10.1002/adfm.202003380
oai:zenodo.org:3989424
user-growbot
user-eu
Tricinci, Omar
Center for Micro-BioRobotics, Istituto Italiano di Tecnologia
Naselli, Giovanna A.
Center for Micro-BioRobotics, Istituto Italiano di Tecnologia
Mondini, Alessio
Center for Micro-BioRobotics, Istituto Italiano di Tecnologia
Filippeschi, Carlo
Center for Micro-BioRobotics, Istituto Italiano di Tecnologia
Tramacere, Francesca
Center for Micro-BioRobotics, Istituto Italiano di Tecnologia
Mishra, Anand K.
Cornell University, USA
Mazzolai, Barbara
Center for Micro-BioRobotics, Istituto Italiano di Tecnologia
Climbing Plant‐Inspired Micropatterned Devices for Reversible Attachment
Fiorello, Isabella
Center for Micro-BioRobotics, Istituto Italiano di Tecnologia; The Biorobotics Institute, Scuola Superiore Sant'Anna, Pisa, Italy
info:eu-repo/semantics/openAccess
Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/legalcode
<p>Climbing plants have evolved over millions of years and have adapted to unpredictable scenarios in unique ways. These crucial features make plants an outstanding biological model for scientists and engineers. Inspired by the ratchet‐like attachment mechanism of the hook‐climber <em>Galium aparine</em>, a novel micropatterned flexible mechanical interlocker is fabricated using a 3D direct laser lithography technique. The artificial hooks are designed based on a morphometric analysis of natural hooks. They are characterized in terms of pull‐off and shear forces, both in an array and as individual hooks. The microprinted hooks array shows high values of pull‐off forces (up to <em>F</em><sub>⊥</sub> ≈ 0.4 N cm<sup>−2</sup>) and shear forces (up to <em>F<sub>//</sub></em> ≈ 13.8 N cm<sup>−2</sup>) on several rough surfaces (i.e., abrasive materials, fabrics, and artificial skin tissues). The contact separation forces of individual artificial hooks are estimated when loads with different orientations are applied (up to <em>F</em> ≈ 0.26 N). In addition, a patterned tape with directional microhooks is integrated into a mobile platform to demonstrate its climbing ability on inclined surfaces of up to 45°. This research opens up new opportunities for prototyping the next generation of mechanical interlockers, particularly for soft‐ and microrobotics, the textile industry, and biomedical fields.</p>
Zenodo
2020-07-21
info:eu-repo/semantics/article
3989423
user-growbot
user-eu
award_title=Towards a new generation of plant-inspired growing artefacts; award_number=824074; award_identifiers_scheme=url; award_identifiers_identifier=https://cordis.europa.eu/projects/824074; funder_id=00k4n6c32; funder_name=European Commission;
1630258986.784905
2245431
md5:77f5742e5b1551c635948e5d6e97f5dd
https://zenodo.org/records/3989424/files/adfm.202003380.pdf
public