An organic thin film device in which as a junction interface shape between an organic thin film and an adjacent layer, a sectional contour shape of a device interface having a Hausdorff dimension, as one fractal dimension, falling within the range 1. An end of a guide rod making up the transmission section is connected in a body surrounding groove of a piston rod disposed inside the body. The method continues by moving the substrate assembly andor the polishing pad with respect to the other to rub at least one of the substrate assembly and the plagiarizing surface against the other at a relative velocity.