a layer of the mixture that contains polymer and conductive particles is applied over a first surface , when the mixture has a first viscosity that allows the conductive particles to rearrange within the layer . an electric field is applied over the layer , so that a number of the conductive particles are aligned with the field and thereafter the viscosity of the layer is changed to a second , higher viscosity , in order to mechanically stabilise the layer . this leads to a stable layer with enhanced and anisotropic conductivity .