Theory of giant magnetoelastic effect in soft systems.

Sci Adv

Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Published: January 2025

AI Article Synopsis

  • The magnetoelastic effect, traditionally seen in metals since 1865, has recently been observed in soft matter, opening up new possibilities for energy and healthcare applications.
  • A theoretical framework has been developed to accurately interpret this effect across different soft system variations, including deformation modes and magnetization profiles.
  • This research reveals significant magnetoelastic phenomena, like magnetic pole reversal, and provides a solid foundation for further exploration and practical uses in soft matter systems.

Article Abstract

Having been predominantly observed in rigid metal and metal alloys since 1865, the magnetoelastic effect was recently experimentally discovered in a soft matter system and used as a new working mechanism for energy and health care applications. Here, a theoretical framework is presented and proven to be universally accurate and robust in interpreting the giant magnetoelastic effect across soft systems subjected to various deformation modes, micromagnet concentrations, magnetization profiles, and geometric structures. The theory uncovers substantial, unique magnetoelastic phenomena in soft systems, including the magnetic pole reversal under localized compression. This work lays a firm foundation for an in-depth understanding and practical applications of the giant magnetoelastic effect in soft matter systems.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11698095PMC
http://dx.doi.org/10.1126/sciadv.ads0071DOI Listing

Publication Analysis

Top Keywords

giant magnetoelastic
12
magnetoelastic soft
12
soft systems
12
soft matter
8
magnetoelastic
5
soft
5
theory giant
4
systems
4
systems observed
4
observed rigid
4

Similar Publications

Theory of giant magnetoelastic effect in soft systems.

Sci Adv

January 2025

Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Article Synopsis
  • The magnetoelastic effect, traditionally seen in metals since 1865, has recently been observed in soft matter, opening up new possibilities for energy and healthcare applications.
  • A theoretical framework has been developed to accurately interpret this effect across different soft system variations, including deformation modes and magnetization profiles.
  • This research reveals significant magnetoelastic phenomena, like magnetic pole reversal, and provides a solid foundation for further exploration and practical uses in soft matter systems.
View Article and Find Full Text PDF

Giant elastocaloric effect at low temperatures in TmVO and implications for cryogenic cooling.

Proc Natl Acad Sci U S A

June 2024

Department of Applied Physics, and Geballe Laboratory for Advanced Materials, Stanford University, Stanford, CA 94305.

Adiabatic decompression of paraquadrupolar materials has significant potential as a cryogenic cooling technology. We focus on TmVO[Formula: see text], an archetypal material that undergoes a continuous phase transition to a ferroquadrupole-ordered state at 2.15 K.

View Article and Find Full Text PDF

A Novel Induction-Type Pressure Sensor based on Magneto-Stress Impedance and Magnetoelastic Coupling Effect for Monitoring Hand Rehabilitation.

Small

August 2024

Institute for Composites Science Innovation (InCSI), School of Materials Science and Engineering, Zhejiang University, 866 Yuhangtang Road, Hangzhou, 310028, China.

Visualization of training effectiveness is critical to patients' confidence and eventual rehabilitation. Here, an innovative magnetoinductive pressure sensor is proposed for monitoring hand rehabilitation in stroke hemiplegic patients. It couples the giant magneto and stress-impedance effects of a square spiral amorphous wire with the giant magnetoelastic effect of a polymer magnet (NdFeB@PDMS).

View Article and Find Full Text PDF

A multimodal magnetoelastic artificial skin for underwater haptic sensing.

Sci Adv

January 2024

Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Future exploitation of marine resources in a sustainable and eco-friendly way requires autonomous underwater robotics with human-like perception. However, the development of such intelligent robots is now impeded by the lack of adequate underwater haptic sensing technology. Inspired by the populational coding strategy of the human tactile system, we harness the giant magnetoelasticity in soft polymer systems as an innovative platform technology to construct a multimodal underwater robotic skin for marine object recognition with intrinsic waterproofness and a simple configuration.

View Article and Find Full Text PDF

Spherical Magnetoelastic Generator for Multidirectional Vibration Energy Harvesting.

ACS Nano

February 2023

Department of Bioengineering, University of California, Los Angeles, Los Angeles, California 90095, United States.

Vibration is a common, usually wasted energy, and an attractive target for sustainable electricity generation. In this work, we introduce a new working mechanism to the vibration energy harvesting community by contributing a spherical magnetoelastic generator (S-MEG), which permits multidirectional vibration and is highly adaptable to many natural oscillation frequencies, exhibiting a resonant frequency of 24 Hz and a relatively wide working bandwidth of 15 Hz in the low-frequency range. It also features a low internal impedance of 70 Ω, which can respectively deliver a maximum short-circuit current density of 7.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!