Work

Wireless Power Transfer Modalities for Implantable Bioelectronics: Electromagnetic, Acoustic, and Magneto‐Dynamic Perspectives

Year: 2025

Type: article

Abstract: Wireless power transfer (WPT) has become essential for advancing implantable bioelectronics, providing sustainable energy without battery‐lifetime concerns or wired constraints. To mitigate these issues, a range of wireless power‐transfer approaches has been advanced to supply energy to implanted electronic systems. This review surveys four major modalities: electromagnetic (EM), magnetoelectric (ME), acoustic (AC), and magneto‐dynamic (MD), with attention to their principles, representative materials, and performance trade‐offs. EM systems offer relatively high power but face issues of alignment sensitivity and tissue heating. ME devices reduce specific absorption and enable flexible formats, yet their power output and long‐term biocompatibility remain limited. AC approaches, leveraging ultrasound, enable low‐frequency, biocompatible operation but depend strongly on medium stability. Recently, MD platforms have emerged as a paradigm shift, generating electricity from magnetic motion with tolerance to misalignment and independence from biological media, while enabling therapeutic functions. Comparative analyses reveal that no single approach satisfies all criteria, but each defines a distinct operating domain. These insights highlight future opportunities for safe and reliable implantable WPT technologies.

Source: Advanced Materials Technologies

DOI: 10.1002/admt.202502002

Authors: Junyeop Kim, Yoonseok Park

Institution: Kyung Hee University

Language: English

Topic: Wireless Power Transfer Systems

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $4,680