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. 2021 Jul 15;153(8):e202112897. doi: 10.1085/jgp.202112897

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© 2021 Moise et al.

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Figure S4. — Illustration of Laplace’s equation on a regular geometry and uniform material. The problem has two Dirichlet (fixed) boundary conditions on apposing faces, with area A and separated by distance L: 0 V on the left face (highlighted in blue) and 1 V on the right face (red). All other boundaries have no-flux conditions. The gray arrows represent the direction of the electric field or current flux.