公开(公告)号：US20250143596A1

公开(公告)日：2025-05-08

申请号：US18694371

申请日：2022-09-23

Applicant: The Regents of the University of California

Inventor： Jun CHEN

IPC: A61B5/05 ,  A61B5/00 ,  A61B5/11 ,  A61B5/113 ,  H01F7/02

Abstract: The present embodiments relate generally to a soft system for producing a giant magnetoelastic effect. In some embodiments, the soft system is composed of platinum-catalyzed silicone polymer matrix and neodymium-iron-boron nanomagnets. The soft system shows up to four times more enhancement of the magnetomechanical coupling factor (T/Pa) than traditional rigid counterparts owing to a distinct physical mechanism. In embodiments, the giant magnetoelastic effect is coupled with magnetic induction to implement a soft magnetoelastic generator (MEG) as an approach to biomechanical energy conversion, a technology that was heretofore conventionally challenged by low current, high internal impedance, and low water/humidity resistance for decent operation stability. This new method of biomechanical-to-electrical conversion is intrinsically waterproof since the magnetic fields are able to penetrate water with negligible intensity loss. Thus, it was demonstrated to work stably on wet skin or in body fluids without any encapsulation, opening up alternative avenues for practical human-body centered energy, sensing, and therapeutic applications.