Casimir force in a water nanolayer confined by graphene sheets
Abstract
Casimir forces, arising from quantum and thermal fluctuations, depend strongly on the electromagnetic susceptibilities of the interacting materials. Here, we theoretically investigate the Casimir force between two graphene sheets separated by a nanometer-thin layer of liquid water. We find that deviations from the bulk case can be as large as 24 \%, mostly due to the static susceptibility components. This effect does not decrease monotonically as a function of the layer thickness: it increases up to a maximum at 70 nm and it slowly declines to the bulk limit only at 1 micron. This is due to two competing effects: on one hand, the anisotropy decreases with the layer thickness; on the other hand, the relative contribution of the most anisotropic, static susceptibility components increases.
Related
- Temperature dependence of the Casimir pressure on two graphene sheets placed on a substrate
- Evanescent-mode Casimir-Josephson force and gate-controlled resonances in ballistic graphene Josephson junctions
- Casimir effect for a massive scalar field confined between parallel plates with a spatially varying effective mass
- Temperature dependence of the Casimir force between plane-layered structures: an approach based on the principle of argument
- Casimir Force, Magnetization, and Susceptibility for \\ Ising Chain with an Impurity Atom in the Presence of an External Field
BibTeX
@misc{broer2026casimir,
title = {{Casimir force in a water nanolayer confined by graphene sheets}},
author = {Wijnand Broer and Jure Dobnikar},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.23609},
eprint = {2609.23609},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.23609},
}
RIS
TY - UNPB
TI - Casimir force in a water nanolayer confined by graphene sheets
AU - Wijnand Broer
AU - Jure Dobnikar
PY - 2026
DA - 2026/09/29
PB - arXiv
DO - 10.48550/arxiv.2609.23609
UR - https://arxiv.org/abs/2609.23609
AB - Casimir forces, arising from quantum and thermal fluctuations, depend strongly on the electromagnetic susceptibilities of the interacting materials. Here, we theoretically investigate the Casimir force between two graphene sheets separated by a nanometer-thin layer of liquid water. We find that deviations from the bulk case can be as large as 24 \%, mostly due to the static susceptibility components. This effect does not decrease monotonically as a function of the layer thickness: it increases up to a maximum at 70 nm and it slowly declines to the bulk limit only at 1 micron. This is due to two competing effects: on one hand, the anisotropy decreases with the layer thickness; on the other hand, the relative contribution of the most anisotropic, static susceptibility components increases.
ER -