Dedication to the Memory of Dr. Ulrich Kogelschatz

Klaus-Dieter Weltmann and Mounir Laroussi, the authors of this dedication, would like to thank the Editor-in-Chief, Steven Gitomer, and the Editorial Board of the IEEE Transactions on Plasma Science for agreeing to dedicate this special issue on Atmospheric Pressure Plasmas and their Applications to the memory of Dr. Ulrich Kogelschatz, one of the leading scientists and pioneers of our field.