A High Spatiotemporal Iontronic Single-Cell Viscometer
(a) Bright-field microscopy images of the nanotool recording the ionic signals within the single HeLa cell upon glucose deprivation experiment. . (b) The measured viscosities (,). (c) The fluorescence images of normal and heat-shocked HeLa cells labeled with TIA-1-GFP as SG markers. . (d) The recovery of the viscosities of heat-shocked HeLa cells within 60 minutes ().