Li, Zhi;
Coote, Joanna M;
Subburaman, Swathika;
Iacoviello, Francesco;
Page, Kristopher;
Alles, Erwin J;
Prokopovich, Polina;
... Noimark, Sacha; + view all
(2023)
Low‐Field Actuating Magnetic Elastomer Membranes Characterized using Fibre‐Optic Interferometry.
Advanced Functional Materials
10.1002/adfm.202301857.
Preview |
Text
Adv Funct Materials - 2023 - Li.pdf - Published Version Download (2MB) | Preview |
Abstract
Smart robotic devices remotely powered by magnetic field have emerged as versatile tools for wide biomedical applications. Soft magnetic elastomer (ME) composite membranes with high flexibility and responsiveness are frequently incorporated to enable local actuation for wireless sensing or cargo delivery. However, the fabrication of thin ME membranes with good control in geometry and uniformity remains challenging, as well as the optimization of their actuating performances under low fields (milli‐Tesla). In this work, the development of ME membranes comprising of low‐cost magnetic powder and highly soft elastomer through a simple template‐assisted doctor blading approach, is reported. The fabricated ME membranes are controllable in size (up to centimetre‐scale), thickness (tens of microns) and high particle loading (up to 70 wt.%). Conflicting trade‐off effects of particle concentration upon magnetic responsiveness and mechanical stiffness are investigated and found to be balanced off as it exceeds 60 wt.%. A highly sensitive fibre‐optic interferometric sensing system and a customized fibre‐ferrule‐membrane probe are first proposed to enable dynamic actuation and real‐time displacement characterization. Free‐standing ME membranes are magnetically excited under low field down to 2 mT, and optically monitored with nanometer accuracy. The fast and consistent responses of ME membranes showcase their promising biomedical applications in nanoscale actuation and sensing.
| Type: | Article |
|---|---|
| Title: | Low‐Field Actuating Magnetic Elastomer Membranes Characterized using Fibre‐Optic Interferometry |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/adfm.202301857 |
| Publisher version: | https://doi.org/10.1002/adfm.202301857 |
| Language: | English |
| Additional information: | © 2023 The Authors. Advanced Functional Materials published by Wiley-VCH GmbH This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Keywords: | fibre-optic interferometry, magnetic actuation, magnetic elastomers |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10177621 |
Loading...
Loading...Loading...| 1. |  United States | 4 |
| 2. |  Russian Federation | 2 |
| 3. |  United Kingdom | 2 |
| 4. |  China | 2 |
| 5. |  Switzerland | 1 |
| 6. |  Germany | 1 |
Archive Staff Only
 |
View Item |
