Bondarev, Igor V.Pugh, Michael D.Rodriguez-Lopez, PabloWoods, Lilia M.Antezza, Mauro2024-01-252024-01-252023-10-09Phys. Chem. Chem. Phys., 2023,25, 29257-292651463-9076https://hdl.handle.net/10115/28865We study within the framework of the Lifshitz theory the long-range Casimir force for in-plane isotropic and anisotropic free-standing transdimensional material slabs. In the former case{,} we show that the confinement-induced nonlocality not only weakens the attraction of ultrathin slabs but also changes the distance dependence of the material-dependent correction to the Casimir force to go as contrary to the ∼1/l dependence of that of the local Lifshitz force. In the latter case{,} we use closely packed array of parallel aligned single-wall carbon nanotubes in a dielectric layer of finite thickness to demonstrate strong orientational anisotropy and crossover behavior for the inter-slab attractive force in addition to its reduction with decreasing slab thickness. We give physical insight as to why such a pair of ultrathin slabs prefers to stick together in the perpendicularly oriented manner{,} rather than in the parallel relative orientation as one would customarily expect.enginfo:eu-repo/semantics/article10.1039/D3CP03706Ainfo:eu-repo/semantics/embargoedAccess