Links for fulltext
(May Require Subscription)
- Publisher Website: 10.1088/1748-3190/abffec
- Scopus: eid_2-s2.0-85108386747
- PMID: 33975299
- WOS: WOS:000662671800001
- Find via
Supplementary
- Citations:
- Appears in Collections:
Article: Printed miniature robotic actuators with curvature-induced stiffness control inspired by the insect wing
Title | Printed miniature robotic actuators with curvature-induced stiffness control inspired by the insect wing |
---|---|
Authors | |
Keywords | 3D printing electrochemical actuator transition metal oxide tunable stiffness |
Issue Date | 2021 |
Publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/1748-3190 |
Citation | Bioinspiration & Biomimetics, 2021, v. 16 n. 4, article no. 046018 How to Cite? |
Abstract | Stimuli-responsive actuating materials offer a promising way to power insect-scale robots, but a vast majority of these material systems are too soft for load bearing in different applications. While strategies for active stiffness control have been developed for humanoid-scale robots, for insect-scale counterparts for which compactness and functional complexity are essential requirements, these strategies are too bulky to be applicable. Here, we introduce a method whereby the same actuating material serves not only as the artificial muscles to power an insect-scale robot for load bearing, but also to increase the robot stiffness on-demand, by bending it to increase the second moment of area. This concept is biomimetically inspired by how insect wings stiffen themselves, and is realized here with manganese dioxide as a high-performing electrochemical actuating material printed on metallized polycarbonate films as the robot bodies. Using an open-electrodeposition printing method, the robots can be rapidly fabricated in one single step in ~15 minutes, and they can be electrochemically actuated by a potential of ~1 V to produce large bending of ~500° in less than 5 s. With the stiffness enhancement method, fast (~5 s) and reversible stiffness tuning with a theoretical increment by ~4000 times is achieved in a micro-robotic arm at ultra-low potential input of ~1 V, resulting in an improvement in load-bearing capability by about 4 times from ~10 μN to ~41 μN. |
Persistent Identifier | http://hdl.handle.net/10722/301270 |
ISSN | 2023 Impact Factor: 3.1 2023 SCImago Journal Rankings: 0.751 |
ISI Accession Number ID |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Wu, R | - |
dc.contributor.author | Kwan, KW | - |
dc.contributor.author | Ngan, AHW | - |
dc.date.accessioned | 2021-07-27T08:08:39Z | - |
dc.date.available | 2021-07-27T08:08:39Z | - |
dc.date.issued | 2021 | - |
dc.identifier.citation | Bioinspiration & Biomimetics, 2021, v. 16 n. 4, article no. 046018 | - |
dc.identifier.issn | 1748-3182 | - |
dc.identifier.uri | http://hdl.handle.net/10722/301270 | - |
dc.description.abstract | Stimuli-responsive actuating materials offer a promising way to power insect-scale robots, but a vast majority of these material systems are too soft for load bearing in different applications. While strategies for active stiffness control have been developed for humanoid-scale robots, for insect-scale counterparts for which compactness and functional complexity are essential requirements, these strategies are too bulky to be applicable. Here, we introduce a method whereby the same actuating material serves not only as the artificial muscles to power an insect-scale robot for load bearing, but also to increase the robot stiffness on-demand, by bending it to increase the second moment of area. This concept is biomimetically inspired by how insect wings stiffen themselves, and is realized here with manganese dioxide as a high-performing electrochemical actuating material printed on metallized polycarbonate films as the robot bodies. Using an open-electrodeposition printing method, the robots can be rapidly fabricated in one single step in ~15 minutes, and they can be electrochemically actuated by a potential of ~1 V to produce large bending of ~500° in less than 5 s. With the stiffness enhancement method, fast (~5 s) and reversible stiffness tuning with a theoretical increment by ~4000 times is achieved in a micro-robotic arm at ultra-low potential input of ~1 V, resulting in an improvement in load-bearing capability by about 4 times from ~10 μN to ~41 μN. | - |
dc.language | eng | - |
dc.publisher | Institute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/1748-3190 | - |
dc.relation.ispartof | Bioinspiration & Biomimetics | - |
dc.rights | Bioinspiration & Biomimetics. Copyright © Institute of Physics Publishing Ltd. | - |
dc.rights | This is an author-created, un-copyedited version of an article published in Bioinspiration & Biomimetics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at http://dx.doi.org/10.1088/1748-3190/abffec | - |
dc.subject | 3D printing | - |
dc.subject | electrochemical actuator | - |
dc.subject | transition metal oxide | - |
dc.subject | tunable stiffness | - |
dc.title | Printed miniature robotic actuators with curvature-induced stiffness control inspired by the insect wing | - |
dc.type | Article | - |
dc.identifier.email | Wu, R: rrnwu@connect.hku.hk | - |
dc.identifier.email | Kwan, KW: kwan15@hku.hk | - |
dc.identifier.email | Ngan, AHW: hwngan@hku.hk | - |
dc.identifier.authority | Ngan, AHW=rp00225 | - |
dc.description.nature | postprint | - |
dc.identifier.doi | 10.1088/1748-3190/abffec | - |
dc.identifier.pmid | 33975299 | - |
dc.identifier.scopus | eid_2-s2.0-85108386747 | - |
dc.identifier.hkuros | 323807 | - |
dc.identifier.volume | 16 | - |
dc.identifier.issue | 4 | - |
dc.identifier.spage | article no. 046018 | - |
dc.identifier.epage | article no. 046018 | - |
dc.identifier.isi | WOS:000662671800001 | - |
dc.publisher.place | United Kingdom | - |