Colorimetric Recording of Thermal Conditions on Polymeric Inverse Opals

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Recording thermal conditions, i.e., temperature and time, is of great importance for various applications. Although thermometers can measure temperature and record its temporal change with electronic devices, they are nondisposable and not patch-type, restricting their uses. Here, photonic films are designed that record thermal condition through irreversible structural deformation and intuitively report it with color patterns. The photonic films are inverse opals made of negative photoresist on a solid support, where the cross-linking density of the photoresist is regioselectively adjusted. The photonic films show a gradual blueshift of structural color upon heating due to anisotropic compression of the inverse opal, of which the rate depends on temperature and cross-linking density. For single cross-linking density, thermal input is quantified from the color change in the form of coupled temperature and time. With multiple cross-linking densities in a single film, the multicolor pattern is developed, from which the temperature and time are decoupled and separately estimated for isothermal condition.
Publisher
WILEY-V C H VERLAG GMBH
Issue Date
2019-07
Language
English
Article Type
Article
Citation

ADVANCED MATERIALS, v.31, no.30

ISSN
0935-9648
DOI
10.1002/adma.201901398
URI
http://hdl.handle.net/10203/267897
Appears in Collection
CBE-Journal Papers(저널논문)
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