Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 11, Issue 44, Pages 41668-41675Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b14125
Keywords
dynamic color; PNIPAm brush; patterns; MIM resonator; nanomaterials
Funding
- National Natural Science Foundation of China [21805028, 21805029]
- Fundamental Research Funds for the Central Universities [N160504002, N170503010, N180504005, N180705004, N180402023, N180504007]
- Open Project of State Key Laboratory of Supramolecular Structure and Materials [sklssm201906, sklssm2019027, sklssm2019038]
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Dynamic color-changing nanomaterials have been widely investigated for applications in fields like optical sensors, wearable activity monitors, smart electronic devices, and anticounterfeiting materials due to the excellent ability to change their optical properties with external variation. Here, a simple meta-insulator-metal (MIM) trilayer Fabry-Perot resonance cavity with a poly(N-isopropylacrylamide) (PNIPAm) brush layer as a responsive element is reported as a thermal-induced colorimetric response platform. The dynamic changes of conformation and physical properties of PNIPAm brush layer in response to external signals give rise to a significant color change of the MIM Fabry-Perot resonance cavity. This MIM Fabry-Perot resonance cavity shows the advantages of dynamic color change, rapid response, good repeatability, and simple construction. Additionally, the as-prepared MIM cavity shows great potential in various applications such as color printing, multicolor indicator, and information anticounterfeiting.
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