Up-And-Coming Physical Concepts of Wireless Power Transfer

TL;DR

This paper reviews recent advances in novel physical effects and materials that could significantly improve wireless power transfer by overcoming limitations of traditional electromagnetic field control methods.

Contribution

It provides a comprehensive overview of emerging physical concepts and materials that have the potential to enhance the efficiency and stability of wireless power transfer systems.

Findings

Recent physical effects enable better electromagnetic field manipulation

Advanced materials and metastructures improve WPT performance

Analysis of pros and cons of new WPT technologies

Abstract

The rapid development of chargeable devices has caused a great deal of interest in efficient and stable wireless power transfer (WPT) solutions. Most conventional WPT technologies exploit outdated electromagnetic field control methods proposed in the 20th century, wherein some essential parameters are sacrificed in favour of the other ones (efficiency vs. stability), making available WPT systems far from the optimal ones. Over the last few years, the development of novel approaches to electromagnetic field manipulation has enabled many up-and-coming technologies holding great promises for advanced WPT. Examples include coherent perfect absorption, exceptional points in non-Hermitian systems, non-radiating states and anapoles, advanced artificial materials and metastructures. This work overviews the recent achievements in novel physical effects and materials for advanced WPT. We provide a consistent analysis of existing technologies, their pros and cons, and attempt to envision possible perspectives.