Ultrasensitive integrated circuit sensors based on high-order non-Hermitian topological physics

Area of Science:

• Physics
• Materials Science
• Electrical Engineering

Background:

• High-precision sensors are crucial for modern technology.
• Existing sensors often lack sufficient sensitivity and robustness.
• Advancements are needed to overcome current limitations in sensor performance.

Purpose of the Study:

• To propose and experimentally demonstrate a new class of sensors with superior performance.
• To leverage high-order non-Hermitian topological physics for enhanced sensing.
• To develop integrated circuit sensors with unprecedented sensitivity and robustness.

Main Methods:

• Theoretical proposal based on high-order non-Hermitian topological physics.
• Experimental demonstration of the proposed sensor concept.
• Fabrication of fully integrated circuit chips using 65-nm CMOS technology.

Main Results:

• Demonstrated exponential growth in frequency shift with device size, exceeding conventional sensor limitations.
• Experimentally verified sensitivity for systems below 10^-3 femtofarad.
• Confirmed robustness of the sensors against various disorders.

Conclusions:

• The proposed sensors exhibit superior performance due to exotic topological properties.
• Integrated circuit sensors offer a pathway to next-generation sensing technologies.
• These ultrasensitive and robust sensors have broad application potential.