“…Situations where two materials are glued together enter this scope as well; see, eg, Geymonat et al For electromagnetism, thin dielectric layers appear in many situations; see, for example, Haddar and Jiang for the eddy current problem in the context of copper deposits on tubes, or Zutter and Knockaert for the skin effect problem, which has strong connections with thin layers. Biological tissues often involve thin parts; see Perrussel and Poignard for a mathematical and numerical study of the electromagnetic field around and inside a biological cell, or Caubet et al for the description of the diffusion magnetic resonance imaging signal in biological tissues. Thin films are good examples as well, and various models have to be considered depending on their nature and size; see Richard et al and the references therein for falling films, or Verma et al for an electrochemical situation.…”