fig2

Figure 2. Adhesive characteristics of PBS. (A) The deformation of PBS under gravity within 2 min; (B) Surface microtopography of skin, PBS, and SLM; (C-E) Adhesion force-position curves between the skin and PBS patch at varying peeling speeds (1-6 mm/s); (F) Adhesion force during 50 peeling cycles; (G) Comparative bar charts illustrating adhesion force under dry/wet conditions in lap-shearing, pulling, and peeling tests; (H) Time-dependent adhesion force of PBS patch over 7 days. PBS: Polyborosiloxane; SLM: semi-liquid metal.