Fig. 6: Biocompatibility of UCDEs.
From: Upcycling Compact Discs for Flexible and Stretchable Bioelectronic Applications
a Confocal imaging of live/dead stained HaCaT cell cultured for 7 days (scale bar, 100 µm). The sample group of a soaking method for UCDEs: Acetone (Ac), Hydrochloric acid (HCl), Nitric acid (NA), and gold flakes. b Relative fluorescence intensity of cells cultured for 7 days is presented as average and standard error of means (*p < 0.05 TTEST).
