the kardar-parisi-zhang (kpz) equation is the stochastic partial differential equation that models interface growth. in the talk i will present the construction of a stationary measure for the kpz equation on a bounded interval with general inhomogeneous neumann boundary conditions. along the way, we will encounter classical orthogonal polynomials, the asymmetric simple exclusion process, and precise asymptotics of q-gamma functions. \\ \\ this construction is a joint work with ivan corwin.