A method for lowering the temperature of a portion of a subsurface formation is provided. Further, the invention provides a heat shrinkable film and a heat shrinkable multilayer film suitable for drink container packaging, cap seals and the like, using such a block copolymer or the hydrogenated product thereof. A print element ink thus is supplied to the print element. The second set of contacts is detached from the surface electrode assembly. The inventive system makes it possible to use less expensive electronics to arrive at more reliable results.