[1] BASF AG, D-67056 Ludwigshafen, Germany
[2] Tech Univ Chemnitz, Inst Print & Media Technol, D-09107 Chemnitz, Germany
[3] Johns Hopkins Univ, Dept Mat Sci & Engn, Baltimore, MD 21218 USA
[4] Bell Labs, Murray Hill, NJ 07974 USA
[5] Printed Syst GmbH, D-09125 Chemnitz, Germany