Related Experiment Video
Updated: Jun 2, 2026

Optimized Fabrication Procedure for High-Quality Graphene-based Moiré Superlattice Devices
Published on: July 11, 2025
Thermal expansion of supported and freestanding graphene: lattice constant versus interatomic distance
Monica Pozzo1, Dario Alfè, Paolo Lacovig
1Department of Earth Sciences, TYC@UCL, University College London, Gower Street, London WC1E 6BT, United Kingdom.
Abstract:
By using ab initio molecular dynamics calculations, we show that even where the graphene lattice constant contracts, as previously reported for freestanding graphene below room temperature, the average carbon-carbon distance increases with temperature, in both free and supported graphene. This results in a larger corrugation at higher temperature, which can affect the interaction between graphene and the supporting substrate. For a weakly interacting system as graphene/Ir(111), we confirm the results using an experimental approach which gives direct access to interatomic distances.
Related Concept Videos
Trends in Lattice Energy: Ion Size and Charge
Lattice Energies of Ionic Crystals
Thermal expansion and Thermal stress: Problem Solving
To solve the problem, first, identify the known and unknown quantities. The initial length (L) of the bridge is 1275 m, the coefficient of linear expansion (α) for steel is 12 x 10-6/°C, and the change in temperature (ΔT) is 55 °C.
Thermal Strain
IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration
According to Hooke's law, the vibrational frequency is directly proportional to the...
Thermal Expansion

