Fig. 5: Photo-, thermo- and force-induced switching.
From: Self-growth of programmable 2D- and 3D-coupling responsive coating for anti-counterfeiting
a Fluorescence response of P1 under UV (365 nm, 2.8 mW/cm2) and Vis. (525 nm, 1.34 mW/cm2), λex = 410 nm. b CIE and optical photographs of P1 under UV irradiation. The scale bar is 0.5 cm. c Photoswitching cycles of P1 under alternative UV (10 min) and Vis. (12 min) light irradiation, λex = 410 nm. d The height of 3D structure of P1 at different temperatures (25 °C, 35 °C, 45 °C, 55 °C). The 3D structure of P1 is eliminated by press at 60 °C and then fixed at 0 °C. e Optical photographs of 3D structure recovery at different temperatures. The scale bar is 4 mm. f Switching cycles of the 3D structure of P1 under force and heat. Inset in (f): optical photographs of 3D structure. The scale bar is 2 mm.
