Demonstration of topological wireless power transfer

Area of Science:

• Condensed Matter Physics
• Electromagnetism
• Metamaterials

Background:

• Non-radiative wireless power transfer (WPT) using magnetic resonance is limited in range.
• Existing multi-relay WPT systems are sensitive to imperfections and perturbations.
• Double resonator WPT systems suffer efficiency and power loss over longer distances.

Purpose of the Study:

• To demonstrate a novel topological wireless power transfer (TWPT) system.
• To achieve efficient and robust long-distance wireless energy transfer.
• To overcome the range limitations of conventional WPT.

Main Methods:

• Experimental demonstration of TWPT using topological edge states.
• Modeling the system as a parity-time-symmetric Su-Schrieffer-Heeger (SSH) chain.
• Designing coil configurations to suppress unwanted cross-couplings and maintain chiral symmetry.

Main Results:

• High energy transfer efficiency achieved near the exceptional point of topological edge states.
• Demonstrated robustness to disorder and fabrication imperfections.
• Efficient near-field energy transfer via coupled topological edge states.

Conclusions:

• TWPT offers a promising solution for robust, long-distance wireless power transfer.
• The integration of topological metamaterials and non-Hermitian physics advances WPT.
• Potential applications in electronics, transportation, and industry.