Extended Data Fig. 2: Photothermal response characteristics of the PTV.
From: Self-regulated underwater phototaxis of a photoresponsive hydrogel-based phototactic vehicle
a, Local temperature evolution of PNIPAAM-AuNPs hydrogel illuminated by green light at different optical power densities. b, Local temperature evolution of PNIPAAM-r-GO hydrogel illuminated by white light at different optical power densities. c, Infrared thermal image of the PTV under green light irradiation (532 nm, 11.94 mW·mm−2). d, Infrared thermal image of the PTV under white light irradiation (6.63 mW·mm−2). d, Image of bell-shaped head illuminated by green light. f–h, Finite-element analysis of the bell-shaped head subjected to green light, simulated temperature distribution (f), strain field (g) and stress distribution (h). i, Image of the tentacle illuminated by green light. j–l, Finite-element analysis of the tentacle subjected to green light, simulated temperature distribution (j), strain field (k) and stress distribution (l). m, Image of PTV illuminated by white light. n–p, Finite-element analysis of the PTV subjected to white light: simulated temperature distribution (n), strain field (o) and stress distribution (p).
