Fig. 2From: ARGET–ATRP Synthesis and Characterization of PNIPAAm Brushes for Quantitative Cell Detachment StudiesEllipsometric thickness of grafted PNIPAAm brush measured in dry state for different polymerization times by (a) use of tin 2-ethylhexanoate as the reducing agent, and (b) use of ascorbic as the reducing agent. The standard deviation for each measurement is within the size of the data pointBack to article page