Electron-beam-induced Contactless Manipulation of Interlayer Twist in van der Waals Heterostructures
arXiv:2510.03347 · doi:10.1038/s41699-025-00658-x
Abstract
The ability to dynamically control the relative orientation of layers in two dimensional (2D) van der Waals (vdW) heterostructures represents a critical step toward the realization of reconfigurable nanoscale devices. Existing actuation methods often rely on mechanical contact, complex architectures, or extreme operating conditions, which limit their applicability and scalability. In this work, we present a proof-of-concept demonstration of contactless electrostatic actuation based on electron-beam-induced charge injection. By locally charging an insulating hexagonal boron nitride (hBN) flake on an electrically grounded graphene layer, we create an interfacial electric field that generates in-plane electrostatic torque and induces angular displacement. We validate the induced rotation through in-situ scanning electron microscopy (SEM) and twist-dependent Raman spectroscopy.
References in corpus (17)
- Magic-angle graphene superlattices: a new platform for unconventional superconductivity
- Raman spectroscopy as a versatile tool for studying the properties of graphene
- Correlated Insulator Behaviour at Half-Filling in Magic Angle Graphene Superlattices
- Observation of Long-Lived Interlayer Excitons in Monolayer MoSe2-WSe2 Heterostructures
- Dynamic band structure tuning of graphene moiré superlattices with pressure
- Double Indirect Interlayer Exciton in a MoSe2/WSe2 van der Waals Heterostructure
- Nanoelectromechanical Sensors based on Suspended 2D Materials
- Piezoelectricity in monolayer hexagonal boron nitride
- Tunable crystal symmetry in graphene-boron nitride heterostructures with coexisting moiré superlattices
- Macroscopic self-reorientation of interacting two-dimensional crystals
- Moiré metrology of energy landscapes in van der Waals heterostructures
- Dynamics of 2D Material Membranes
- Suspended graphene membranes with attached silicon proof masses as piezoresistive NEMS accelerometers
- Microheater actuators as a versatile platform for strain engineering in 2D materials
- Interlayer Coupling in Two-Dimensional Semiconductor Materials
- CVD-graphene/graphene flakes dual-films as advanced DSSC counter electrodes
- Dual-gated graphene devices for near-field nano-imaging