Giant magnetoelectricity in soft materials using hard magnetic soft materials

Rahmati, Amir Hossein; Jia, Rong; Tan, Kai Liang; Liu, Liping; Zhao, Xuanhe; Deng, Qian; Sharma, Pradeep

doi:10.1016/j.mtphys.2023.100969

Cited by 15 publications

(4 citation statements)

References 37 publications

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“…With the convenient and precise laser manipulation employed in our work, new avenues for studying complex fluid dynamics under diverse conditions have been opened. The unique spinning and convection phenomena observed in this study hold promise for various applications such as heat dissipation, [ 11–13 ] thermal flow sensing, [ 41 ] mechanical actuation, [ 14–18,20,42 ] and soft robotics, [ 19,21,22,24 ] among others.…”

Section: Discussionmentioning

confidence: 99%

“…Beyond its aesthetic appeal, ferrofluid holds significant value in scientific and engineering applications. [ 5–9 ] Its versatility has led to its use in diverse fields such as lubrication, [ 5,9,10 ] heat removal, [ 11–13 ] actuation, [ 9,14–19 ] micromechanics, [ 20–24 ] and even space‐related endeavors. [ 25,26 ] Notably, the thermomagnetic effect, which refers to the temperature‐dependent magnetic susceptibility of ferrofluid, played a key role in the invention of ferrofluid.…”

Section: Introductionmentioning

confidence: 99%

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Spinning a Liquid Wheel and Driving Surface Thermomagnetic Convection with Light

Liu,

Lin,

Qin

et al. 2023

Advanced Materials

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A typical Tesla thermomagnetic engine employs a solid magnetic wheel to convert thermal energy into mechanical energy, while thermomagnetic convection in ferrofluid is still challenging to observe because it is a volume convection that occurs in an enclosed space. Using a water‐based ferrofluid, we demonstrate a liquid Tesla thermomagnetic engine and report the observation of thermomagnetic convection on a free surface. Both types of fluid motions are driven by light and observed by simply placing ferrofluid on a cylindrical magnet. The surface thermomagnetic convection on the free surface is made possible by eliminating the Marangoni effect, while the spinning of the liquid wheel is achieved through the solid‐like behavior of the ferrofluid under a strong magnetic field. Increasing the magnetic field reveals a transition from simple thermomagnetic convection to a combination of the central spin of the spiky wheel surrounded by thermomagnetic convection in the outer region of the ferrofluid. We further demonstrate the coupling between multiple ferrofluid wheels through a fluid bridge. These demonstrations not only unveil the unique properties of ferrofluid but also provide a new platform for studying complex fluid dynamics and thermomagnetic convection, opening up exciting opportunities for light‐controlled fluid actuation and soft robotics.This article is protected by copyright. All rights reserved

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Spinning a Liquid Wheel and Driving Surface Thermomagnetic Convection with Light

Liu,

Lin,

Qin

et al. 2023

Advanced Materials

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show abstract

“…So far, a variety of applications have been proposed and developed using magnetic elastomers. [5][6][7] In recent years, applications have been reported for brushes of magnetic particles, 8 soft magnetoelectric materials that exhibit extremely strong self-bias magnetoelectric effects, 9 and soft magneto-origami machines. 10 In addition, 3D printing technology has recently been widely used to manufacture magnetic responsive soft materials.…”

Section: Introductionmentioning

confidence: 99%

Particle mobility and macroscopic magnetorheological effects for polyurethane magnetic elastomers

Urano,

Watanabe,

Chen

et al. 2024

Soft Matter

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“…1,6 This phenomenon is called the magnetorheological effect (MR effect). In recent years, applications have been reported for brushes of magnetic particles, 9 soft magnetoelectric materials that exhibit extremely strong self-bias magnetoelectric effects, 10 and soft magneto-origami machines. 11 The type of matrix and the type of magnetic particles which have been used in MREs, and the magnitude of the MR effect are well summarized in a recent review.…”

Section: Introductionmentioning

confidence: 99%