Matching magnetic heating and thermal actuation for sequential coupling in hybrid composites by design
- Sequentially coupling two material functions requires matching the output from the first with the input of the second function. Here, magnetic heating controls thermal actuation of a hybrid composite in a challenging system environment causing an elevated level of heat loss. The concept is a hierarchical design consisting of an inner actuator of nanocomposite material, which can be remotely heated by exposure to an alternating magnetic field (AMF) and outer layers of a porous composite system with a closed pore morphology. These porous layers act as heat insulators and as barriers to the surrounding water. By exposure to the AMF, a local bulk temperature of 71 degrees C enables the magnetic actuation of the device, while the temperature of the surrounding water is kept below 50 degrees C. Interestingly, the heat loss during magnetic heating leads to an increase of the water phase (small volume) temperature. The temperature increase is able to sequentially trigger an adjacent thermal actuator attached to the actuator composite. In thisSequentially coupling two material functions requires matching the output from the first with the input of the second function. Here, magnetic heating controls thermal actuation of a hybrid composite in a challenging system environment causing an elevated level of heat loss. The concept is a hierarchical design consisting of an inner actuator of nanocomposite material, which can be remotely heated by exposure to an alternating magnetic field (AMF) and outer layers of a porous composite system with a closed pore morphology. These porous layers act as heat insulators and as barriers to the surrounding water. By exposure to the AMF, a local bulk temperature of 71 degrees C enables the magnetic actuation of the device, while the temperature of the surrounding water is kept below 50 degrees C. Interestingly, the heat loss during magnetic heating leads to an increase of the water phase (small volume) temperature. The temperature increase is able to sequentially trigger an adjacent thermal actuator attached to the actuator composite. In this way it could be demonstrated how the AMF is able to initiate two kinds of independent actuations, which might be interesting for robotics operating in aqueous environments.…
| Author details: | Muhammad Yasar RazzaqORCiDGND, Marc BehlORCiDGND, Matthias HeuchelORCiDGND, Andreas LendleinORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1002/marc.201900440 |
| ISSN: | 1022-1336 |
| ISSN: | 1521-3927 |
| Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/31721350 |
| Title of parent work (English): | Macromolecular rapid communications |
| Publisher: | Wiley-VCH |
| Place of publishing: | Weinheim |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2019/11/13 |
| Publication year: | 2019 |
| Release date: | 2021/06/02 |
| Tag: | artificial muscles; magnetosensitivity; nanocomposites; soft actuators |
| Volume: | 41 |
| Issue: | 1 |
| Number of pages: | 7 |
| Funding institution: | Helmholtz-AssociationHelmholtz Association; Ministry for Science, Research and Cultural Affairs of Brandenburg through the grant of the joint project "Konsequenzen der altersassozierten Zell-und Organfunktionen" of the Gesundheitscampus Brandenburg |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
| Peer review: | Referiert |
| Publishing method: | Open Access / Hybrid Open-Access |
| License (German): |  CC-BY - Namensnennung 4.0 International |
