Physical properties of polyacrylamide gels probed by AFM and rheology Yara Abidine, Valérie M. Laurent, Richard Michel, Alain Duperray, Liviu Iulian Palade and Claude Verdier EPL, 109 3 (2015) 38003 Published online: 19 February 2015 DOI: 10.1209/0295-5075/109/38003