Wetting and Strain Engineering of 2D Materials on Nanopatterned Substrates

Abstract

The fascinating realm of strain engineering and wetting transitions in two-dimensional (2D) materials takes place when placed on a two-dimensional array of nanopillars or one-dimensional rectangular grated substrates. Our investigation encompasses a diverse set of atomically thin 2D materials, including transition metal dichalcogenides, hexagonal boron nitride, and graphene, with a keen focus on the impact of van der Waals adhesion energies to the substrate on the wetting/dewetting behavior on nanopatterned substrates. We find a critical aspect ratio of the nanopillar or grating heights to the period of the pattern when the wetting/dewetting transition occurs. Furthermore, energy hysteresis analysis reveals dynamic detachment and re-engagement events during height adjustments, shedding light on energy barriers of 2D monolayer transferred on patterned substrates. Our findings offer avenues for strain engineering in 2D materials, leading to promising prospects for future technological applications.

References in corpus (11)

• Mechanical Properties of Atomically Thin Boron Nitride and the Role of Interlayer Interactions
• 2D Materials for Future Heterogeneous Electronics
• Identifying Carbon as the Source of Visible Single Photon Emission from Hexagonal Boron Nitride
• Evidence of Flat Bands and Correlated States in Buckled Graphene Superlattices
• Quantum control of a spin qubit coupled to a photonic crystal cavity
• Adhesion, Stiffness and Instability in Atomically Thin MoS2 Bubbles
• Prospects and challenges of quantum emitters in 2D materials
• Photoluminescence imaging of single photon emitters within nanoscale strain profiles in monolayer WSe${}_2$
• High Density, Localized Quantum Emitters in Strained 2D Semiconductors
• Topological flat bands in strained graphene: substrate engineering and optical control
• Vertical Strain-Induced Modification of the Electrical and Spin Properties of Monolayer MoSi2X4 (X= N, P, As and Sb)