1. Effect of counterface roughness on adhesion of mushroom-shaped microstructure by Haytam Kasem, and Michael Varenberg Interface Volume 10(87):20130620 October 6, 2013 ©2013 by The Royal Society

2. Mushroom-shaped adhesive microstructure made of (a) PVS and Epoxy counterfaces (b) 6, (c) 4, (d) 1, (e) 5, with numbers according to table 1. Haytam Kasem, and Michael Varenberg J. R. Soc. Interface 2013;10:20130620 ©2013 by The Royal Society

3. (a) Schematic of the home-made tribometer used [27]. Haytam Kasem, and Michael Varenberg J. R. Soc. Interface 2013;10:20130620 ©2013 by The Royal Society

4. Mushroom-shaped adhesive microstructure in contact with Epoxy counterfaces (a) 6, (b) 4 and (c) 1, with numbers according to table 1. Haytam Kasem, and Michael Varenberg J. R. Soc. Interface 2013;10:20130620 ©2013 by The Royal Society

5. (a) Pull-off force of mushroom-shaped PVS microstructure and (b) smooth PVS surface presented as a function of the Epoxy counterface roughness average Ra. Haytam Kasem, and Michael Varenberg J. R. Soc. Interface 2013;10:20130620 ©2013 by The Royal Society

6. (a) Pull-off force of mushroom-shaped PVS microstructure and (b) smooth PVS surface presented as a function of the Epoxy counterface integrative roughness Ri. Haytam Kasem, and Michael Varenberg J. R. Soc. Interface 2013;10:20130620 ©2013 by The Royal Society