Light-induced photonic systems are rare in nature and usually lack a full color response in artificial systems. Herein, we first report a near-infrared (NIR) light controlled optical hydrogel; its structural color covers the full visible spectrum range. The hydrogel was fabricated by embedding dry thermoresponsive microgels film into a thermoresponsive hydrogel. Under the synergistic effect of the microgels and hydrogel, the hydrogel displayed a dynamic color with temperature changing, and it was reversible. Moreover, the structural colors were angle independent for the amorphous microgel arrays. When carbon nanotubes were integrated into the matrix hydrogel, dynamic structural colors can be displayed under NIR irradiation. Such NIR light-responsive photonic hydrogel film may provide potential applications in artificial skin, the military, and other fields.
A system combining photovoltaic power generation and cogeneration is proposed to improve the photoelectric absorption capacity. First, a time-of-use price strategy is adopted to guide users to change their electricity consumption habits for participation in the demand response, and a demand response model is established. Then, particle swarm optimization (PSO) is used with the aim of minimizing the operation cost of the microgrid to achieve economic dispatching of the microgrid. This considers power balance equation constraints, unit operation constraints, energy storage constraints, and heat storage constraints. Finally, the simulation results show the improved level of photoelectric consumption using the proposed scheme and the economic benefits of the microgrid.
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