Van der Waals Heterostructures and Two-Dimensional Material Assembly

Van der Waals heterostructures are artificial materials formed by stacking atomically thin layers of distinct two-dimensional crystals through weak interlayer forces. This modular approach transcends lattice-matching constraints, allowing precise control over electronic band alignment, optical transitions and mechanical behaviour. Since the isolation of graphene, a profusion of two-dimensional materials—such as hexagonal boron nitride and transition-metal dichalcogenides—has broadened the palette for heterostructure design. By varying composition, rotational alignment or twist angle, researchers can engineer moiré superlattices that give rise to novel correlated states, programmable excitonic phenomena and unconventional superconductivity. Assembly techniques have evolved from polymer-assisted transfers to advanced methods that eliminate contaminants, integrate large-area growth and enable reconfigurable architectures. These advancements underpin applications in next-generation field-effect transistors, photodetectors, flexible electronics and quantum devices, with implications for energy conversion, neuromorphic computing and fundamental studies of emergent physics. The capacity to assemble bespoke layered systems heralds a paradigm in materials-by-design, offering sustainable pathways to high-performance functional devices at wafer scales.

Research from Nature Portfolio

Recent studies have introduced a polymer-free assembly strategy employing silicon nitride membranes to produce pristine van der Waals interfaces capable of withstanding high temperatures and ultra-high vacuum environments. This advance yields heterostructures with enhanced electronic and optoelectronic performance, demonstrated by an order-of-magnitude improvement in moiré superlattice homogeneity in twisted graphene devices. Complementing this, a dual-function polymeric film has been developed to streamline exfoliation and transfer, enabling large-area monolayer yields and carrier mobilities exceeding 200,000 cm² V⁻¹ s⁻¹ at ambient conditions. A further innovation exploits reversible disassembly to reconfigure stacked devices, affording tunable transistor polarities, memory elements and anisotropic optical responses through layer re-sequencing and twist-angle adjustment.

Van der Waals Heterostructures and Two-Dimensional Material Assembly publication trend

The graph below shows the total number of articles in van der waals heterostructures and two-dimensional material assembly across all publications each year (not limited to Nature Index journals).

Technical terms

Van der Waals heterostructure: A layered assembly of distinct two-dimensional crystals held by weak interlayer forces.
Two-dimensional material: A crystal consisting of a single or few atomic layers with confined electronic states.
Moiré superlattice: A periodic pattern arising from a rotational or lattice mismatch between stacked layers that modifies electronic structure.
Molecular-beam epitaxy: A vacuum-based growth technique for atomically precise deposition of crystalline layers.

References

1. Clean assembly of van der Waals heterostructures using silicon nitride membranes. Nature Electronics (2023).
2. Versatile construction of van der Waals heterostructures using a dual-function polymeric film. Nature Communications (2020).
3. Reconfigurable electronics by disassembling and reassembling van der Waals heterostructures. Nature Communications (2021).
4. Epitaxial Growth of Large‐Area Monolayers and van der Waals Heterostructures of Transition‐Metal Chalcogenides via Assisted Nucleation. Advanced Materials (2024).
5. 3D Crystal Construction by Single‐Crystal 2D Material Supercell Multiplying. Advanced Science (2024).
6. Van der Waals Heterostructures for Photoelectric, Memory, and Neural Network Applications. Small Science (2024).