Story perspectives

Revolutionary Research Enables Smaller, Battery-Free Devices

2/26/2026

Summary

Story summary

Researchers from Queensland University of Technology (QUT) and Nanyang Technological University (NTU), led by Professors Dongchen Qi and Xiao Renshaw Wang, show imperfections and vibrations in bismuth telluride control the nonlinear Hall effect and enable direct AC-to-DC conversion.
The approach eliminates the need for bulky diodes, enabling smaller, battery-free devices.
The findings were published in Newton.
The work suggests potential applications in self-powered sensors and ultra-fast wireless technology.

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Story summary

Researchers from Queensland University of Technology (QUT) and Nanyang Technological University (NTU), led by Professors Dongchen Qi and Xiao Renshaw Wang, show imperfections and vibrations in bismuth telluride control the nonlinear Hall effect and enable direct AC-to-DC conversion.
The approach eliminates the need for bulky diodes, enabling smaller, battery-free devices.
The findings were published in Newton.
The work suggests potential applications in self-powered sensors and ultra-fast wireless technology.