J. Frits Dijksman obtained his master's degree in mechanical engineering at the Technical University of Delft, The Netherlands, in 1973. He finished his PhD within the groups of Professor D. de Jong and Professor W.T. Koiter (Technical University of Delft, The Netherlands, 1978) focusing on the engineering mechanics of leaf spring mechanisms. He worked with Philips Research Laboratories in Eindhoven, The Netherlands, for more than 32 years. After his retirement he continued his work as part time professor at the University of Twente, The Netherlands. The topics include inkjet printing of viscoelastic inks, design of inkjet print heads and printed biosensors. He is now emeritus professor and works as a consultant.