Carbon-based materials exhibit unrivaled ability to modulate electromagnetic waves in the infrared band. However, the black appearance restricts the application in the visible light camouflage. This work combines color coatings (consisting mainly of pigments and thermochromic microcapsules) with carbon-based devices and overcomes the high absorption of the color coatings in the mid-infrared band. Ultimately, the obtained white carbon film (W-CNT) device exhibits tunable thermal emissivity from 0.453 to 0.833, maintains a residual modulation range up to 71.7%. In addition, the expansion of the coloration layer to thermochromic microcapsules enables the devices to independently modulate the visible and mid-infrared spectra, further expanding the applicability. We believe that the carbon-based device is valuable for a wide range of applications in camouflage and personal thermal management, which may provide some ideas for designing multispectral independent modulation devices.

中文翻译：

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碳基电致变色器件的着色策略：实现可见光和中红外区域调制

碳基材料在红外波段调制电磁波方面表现出无与伦比的能力。然而，黑色的外观限制了其在可见光迷彩中的应用。该工作将彩色涂层（主要由颜料和热致变色微胶囊组成）与碳基器件相结合，克服了彩色涂层在中红外波段的高吸收问题。最终，所获得的白碳膜（W-CNT）器件表现出从0.453到0.833可调的热发射率，保持高达71.7%的剩余调制范围。此外，将着色层扩展为热致变色微胶囊，使器件能够独立调制可见光和中红外光谱，进一步扩大了适用性。我们相信碳基器件在伪装和个人热管理方面具有广泛的应用价值，这可能为设计多光谱独立调制器件提供一些思路。