Two types of graphoepitaxy of tellurium onto uniaxially-oriented polyethylene

The growth of vapour-deposited tellurium on uniaxially oriented polyethylen e substrates of various crystallinity is examined. Two orientations of the tellurium appear, depending apparently on the crystallinity of the respecti ve substrate. That these individual orientations are of various origins is concluded from our investigations. On totally amorphous films, obtained aft er electron irradiation of the substrate films, only one preferred orientat ion of the Te remains in accordance with our model, which is presented to e xplain the mechanisms of the respective orientations of tellurium onto poly ethylene. (C) 1998 Kluwer Academic Publishers.