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Published on: November 30, 2012
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Engineered moiré photonic and phononic superlattices.
Mourad Oudich1,2, Xianghong Kong3, Tan Zhang3
1Graduate Program in Acoustics, Penn State University, University Park, PA, USA.
Nature Materials
|August 30, 2024
Summary
Moiré superlattices, inspired by twisted bilayer graphene, are revolutionizing classical wave physics. These structures offer novel control over electromagnetic and mechanical waves for advanced photonic and phononic devices.
Area of Science:
- Condensed matter physics
- Materials science
- Wave physics
Background:
- Twisted bilayer graphene exhibits Mott insulating and superconducting states.
- Moiré superlattices enable novel phenomena in classical wave physics.
- Emerging moiré photonic and phononic structures offer robust control of electromagnetic and mechanical waves.
Purpose of the Study:
- To present a framework for emerging moiré photonic and phononic structures.
- To highlight the engineering of band structures and material properties.
- To discuss future prospects in materials science and wave physics.
Main Methods:
- Exploiting twist angle and interlayer coupling in moiré superlattices.
- Engineering photonic and phononic band structures.
- Tailoring effective material properties for classical wave devices.
Main Results:
- Demonstration of Mott insulating and unconventional superconducting states in twisted bilayer graphene.
- Creation of novel moiré photonic and phononic structures.
- New routes for controlling classical waves.
Conclusions:
- Moiré superlattices provide a powerful platform for classical wave physics.
- Twist angle and interlayer coupling are key parameters for device engineering.
- This field promises significant advancements in novel classical wave devices.
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