Journal
ACS PHOTONICS
Volume 6, Issue 1, Pages 116-122Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.8b00952
Keywords
graphene; structural color; angle-independent; human body cooling; thermal management
Categories
Funding
- National Natural Science Foundation of China [21736006, 21474052]
- National Key Research and Development Program of China [2016YFB0401700]
- Natural Science Foundation of Jiangsu Province [BK20171013]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Fund of State Key Laboratory of Material-Oriented Chemical Engineering [ZK201704]
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Angle-independent structural colors are prepared by membrane separation-assisted assembly (MSAA) method with modified reduced graphene oxide (rGO) as the substrate membrane. We show that the wrinkled and crumpled rGO laminates not only ensure uneven morphology of colloidal film but improve color saturation by decreasing coherent scattering. In addition, we study the influence of stopband position on thermal insulation property of the colloidal film for the first time. High absolute temperature difference of 6.9 degrees C is achieved comparing with control sample. And films with longer stopband positions indicate better thermal insulation performance because of inherent slow photon effect in photonic structure. This general principle of thermal insulation by colloidal films opens the way to a new generation of thermal management materials.
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