fig4
Figure 4. Biosafety evaluation results of SLM-PBS materials. (A) Fluorescence staining images of cells in the PBS group, SLM-PBS group, and negative control group, showing PI, Calcein AM, Hoeset staining, and merged images; (B) Statistical bar chart of cell viability for SLM-PBS group, PBS group, and negative control group; (C) Comparative images of visual observation and infrared thermography for a copper electrode, a SLM-PBS electrode, And a Ag/AgCl electrode adhered to skin at 0 and 48 h. SLM: Semi-liquid metal; PBS: polyborosiloxane; PI: propidium iodide.