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Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals

Published on: August 15, 2018

Searching repulsive Casimir forces between magneto-electric materials.

Zixuan Dai¹, Qing-Dong Jiang^1,2

¹Tsung-Dao Lee Institute & School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 201210, People's Republic of China.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|September 18, 2025

Summary

This summary is machine-generated.

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Nano letters·2024

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Researchers explored the Casimir effect in magneto-electric materials. They mapped how symmetry breaking influences the Casimir force sign, revealing a phase diagram crucial for quantum electrodynamics and condensed matter physics.

Area of Science:

Quantum Electrodynamics
Condensed Matter Physics
Materials Science

Background:

The Casimir effect, a quantum phenomenon from vacuum fluctuations, is key to quantum electrodynamics.
Condensed matter physics advances through materials with broken symmetries, topology, and magneto-electric coupling.

Purpose of the Study:

To clarify the role of parity and time-reversal symmetry in the Casimir force sign.
To analyze Casimir forces between magneto-electric materials.

Main Methods:

Calculation of Casimir forces between magneto-electric materials.
Development of a phase diagram for symmetry-breaking-induced Casimir forces.
Investigation of force variation with object separation distance.

Keywords:

Casimir effect magneto-electric coupling parity symmetry time-reversal symmetry

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Main Results:

A phase diagram was obtained, illustrating the sign of symmetry-breaking-induced Casimir forces.
The study reveals how this phase diagram changes with separation distances.

Conclusions:

The findings enhance understanding of the Casimir force sign, important for both theoretical and practical applications.
This research bridges quantum electrodynamics and condensed matter physics through magneto-electric materials.