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Updated: Feb 24, 2026
09:25
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
Published on: July 5, 2019
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Layered van der Waals crystals with hyperbolic light dispersion.
M N Gjerding1,2, R Petersen3,4, T G Pedersen3,4
1CAMD, Department of Physics, Technical University of Denmark, Kongens Lyngby, 2800, Denmark.
Nature Communications
|August 24, 2017
Summary
Naturally hyperbolic materials, like transition metal dichalcogenides (TMDs), offer advanced optical properties without artificial structuring. This study expands the known materials and explores their tunable hyperbolic behavior for next-generation photonic metamaterials.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Nanophotonics
Background:
- Artificially structured hyperbolic metamaterials face limitations due to finite component sizes.
- Recently discovered natural hyperbolic materials offer promising alternatives.
- Layered transition metal dichalcogenides (TMDs) are a class of materials with potential hyperbolic properties.
Purpose of the Study:
- To theoretically identify and characterize naturally hyperbolic materials within the transition metal dichalcogenides (TMDs) family.
- To explore the tunability of hyperbolic properties using van der Waals heterostructuring.
- To identify applications in controlling light-matter interactions, such as Purcell factor enhancement.
Main Methods:
- First-principles calculations were employed to screen for hyperbolic dispersion in TMDs.
- Analysis of electronic properties to determine hyperbolic frequency regimes.
- Theoretical investigation of van der Waals heterostructures for property control.
Main Results:
- The study extends the known natural hyperbolic materials to include layered transition metal dichalcogenides (TMDs).
- A wide range of hyperbolic frequency regimes, from near-infrared to ultraviolet, were identified due to diverse electronic properties of TMDs.
- Van der Waals heterostructuring was shown to enable further control over hyperbolic properties.
Conclusions:
- Layered transition metal dichalcogenides represent a significant class of natural hyperbolic materials.
- The ability to tune hyperbolic properties via heterostructuring opens avenues for atomic-scale photonic metamaterial design.
- These materials show promise for applications like Purcell factor enhancement for quantum emitters.
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