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Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
Published on: July 18, 2025
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Electron quantum metamaterials in van der Waals heterostructures
Justin C W Song1,2, Nathaniel M Gabor3,4,5
1Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore. justinsong@ntu.edu.sg.
Nature Nanotechnology
|November 7, 2018
Summary
Scientists are designing synthetic quantum metamaterials by structuring electronic matter at the nanoscale. These novel electronic metamaterials offer unique properties due to strong electron interactions, unlike optical metamaterials.
Area of Science:
- Condensed matter physics
- Materials science
- Quantum engineering
Background:
- Optical metamaterials manipulate light using nanoscale structures, mimicking natural phenomena like butterfly wing coloration.
- Synthetic periodic arrays with feature sizes below the wavelength of light enable control over electromagnetic radiation.
Purpose of the Study:
- To highlight the potential of designer structuring of electronic matter at and below the electron wavelength.
- To introduce synthetic quantum metamaterials with unconventional responses.
- To explore the richer behaviors promised by electronic metamaterials compared to optical ones.
Main Methods:
- Engineering synthetic periodic arrays with feature sizes at and below the electron wavelength.
- Utilizing experimental developments in stacking atomically layered heterostructures (e.g., mechanical pick-up/transfer assembly).
- Tuning atomic-scale registrations and structures over distances smaller than characteristic electronic length scales.
Main Results:
- Development of synthetic quantum metamaterials with unconventional responses.
- Demonstration of atomic-scale structuring and tuning capabilities.
- Identification of potential for richer emergent phenomena due to strong electron interactions.
Conclusions:
- Designer structuring of electronic matter offers a new frontier in quantum metamaterials.
- The strong interaction between electrons in subwavelength-structured metamaterials leads to diverse emergent phenomena.
- Electronic metamaterials promise radically new classes of interacting quantum systems.
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