Abstract
With the development of dynamic infrared camouflage technology, photothermal infrared camouflage has attracted researchers' attention due to its remote-control capability and fast response speed. However, lots of photothermal fillers for high temperatures will break the flexibility and transparency of the polymer. In this work, transparent photothermal infrared camouflage liquid metal microspheres/colorless polyimide (LM/CPI) films with light programming were fabricated. The polydopamine-coated LM microspheres endow CPI with excellent photothermal effect, achieving a wide range of infrared camouflage from room temperature to 390 °C. Furthermore, the glass transition, residual stress, and the different thermal expansion coefficients endow the LM/CPI film with light programming and light actuation capability. The LM/CPI film can mimic the bending of an arm and the opening and closing of a hook. Combining the light programming capability with the dynamic infrared camouflage ability of the LM/CPI film proposes an infrared camouflage strategy where the position of the camouflage film is changed through light programming while conducting infrared camouflage, thereby targeting the design of deceptive, false targets or altering the camouflaged area. Therefore, the LM/CPI films open up a new strategy for dynamic infrared camouflage, sketching a promising future for them in dynamic infrared camouflage.
Published Version
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