Light-Powered Self-Sustained Oscillators of Graphene Oxide/Liquid Crystalline Network Composites Showing Amplitude and Frequency Superposition

• DOI: 10.1021/acsami.2c00680
• Publication Date: 2022-03-25T21:52:27Z
• Authors: Jianchuang Wang; Bowen Yang; Mingming Yu; Haifeng Yu
• Keywords: Photothermal effect; Oscillation (cell signaling)

Light-activated self-oscillators have drawn enormous attention for their potential applications in mobile machines, energy harvesting, signal modulation, etc. Herein, we report one graphene oxide (GO)/liquid crystalline network (LCN) actuator that presents a unique light-activated oscillation with amplitude and frequency superposition. The GO/LCN composite film is prepared by the one-step polymerization of LC monomers, which favors splay orientation cells made gluing together two glass sheets, coated photothermal agent GO other rubbed polyimide alignment layer. Owing to asymmetric contraction/expansion, changing cutting direction gives rise notably different actuation behaviors films. Moreover, it twists little during deflection process as result experimental error process, may cause strip be cut inaccurately. When embedded self-shadowing system, produces an unconventional hybrid mode upon near-infrared light irradiation, i.e., bending twisting coupled. Furthermore, when aspect ratio decreases, suppressed changes from coupled single mode. proposed strategy extend application materials enrich self-oscillating behaviors.