Fig. 1. Femtosecond laser additive manufacturing of dual-responsive microstructure arrays on flexible substrates

Fig. 2. Stretching under thermal. (a) Initial state; (b) one-dimensional stretching; (c) two-dimensional stretching; (d) thermal response recovery

Fig. 3. SEM images of BSA micro-pillars when the tBA-AUD films are stretched. (a) One-dimensional stretching; (b) two-dimensional stretching

Fig. 4. pH response of BSA micro-pillars. (a) pH=1; (b) pH=5; (c) pH=13

Fig. 5. Dual response micro-lens array

Fig. 6. SEM images of BSA micro-lens. (a) Unstretched state; (b) stretched state

Fig. 7. Dual response optical microscope photograph of BSA micro-lens array. (a) Schematic diagram of optical system imaging; (b) unstretched state, pH=5; (c) unstretched state, pH=13; (d) stretched state, pH=5; (e) stretched state, pH=13