%0 Journal Article %T Casimir effects in systems containing 2D layers, like graphene and 2D electron gases %A Bo E. Sernelius %J Physics %D 2014 %I arXiv %R 10.1088/0953-8984/27/21/214017 %X We present a variety of methods to derive the Casimir interaction in planar systems containing two-dimensional layers. Examples where this can be of use is graphene, graphene-like layers and two-dimensional electron gases. We present results for two free standing layers and for one layer above a substrate. The results can easily be extended to systems with a larger number of layers. %U http://arxiv.org/abs/1409.2660v1