Codice QDD211 Titolo Concentration along geodesics for a nonlinear Steklov problem arising in corrosion modelling Data 2015-06-04 Autore/i Pagani,C.D.; Pierotti, D.; Pistoia, A.; Vaira, G. Link Download full text Abstract We consider the problem of finding pairs (\lambda; u), with \lambda > 0 and u a harmonic function in a three dimensional torus-like domain D, satisfying the nonlinear boundary condition \partial_n u =  sinh u on \partial D. This type of boundary condition arises in corrosion modelling (Butler Volmer condition). We prove existence of solutions which concentrate along some geodesics of the boundary as the parameter  \lambda goes to zero.