Multistimuli-Responsive Optical Hydrogel Nanomembranes to Construct Planar Color Display Boards for Detecting Local Environmental Changes
- Authors
- Umar, Muhammad; Son, Dongwan; Arif, Sara; Kim, Myungwoong; Kim, Sunghwan
- Issue Date
- Dec-2020
- Publisher
- AMER CHEMICAL SOC
- Keywords
- alcohol responsiveness; color filter; local detection; metal-insulator-metal (MIM); stimuli-responsive polymer; temperature responsiveness
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.12, no.49, pp.55231 - 55242
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 12
- Number
- 49
- Start Page
- 55231
- End Page
- 55242
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/190065
- DOI
- 10.1021/acsami.0c15195
- ISSN
- 1944-8244
- Abstract
- Planar metal-insulator-metal (MIM) optical cavities are attractive for biochemical and environmental sensing applications, as they offer a cost-effective cavity platform with acceptable performances. However, localized detection and scope of expansion of applicable analytes are still challenging. Here, we report a stimuliresponsive color display board that can exhibit local spectral footprints, for locally applied heat and alcohol presence. A thermoresponsive, optically applicable, and patternable copolymer, poly(N-isopropylacrylamide-r-glycidyl methacrylate), is synthesized and used with a photosensitive cross-linker to produce a responsive insulating layer. This layer is then sandwiched between two nanoporous silver membranes to yield a thermoresponsive MIM cavity. The resonant spectral peak is blue-shifted as the environmental temperature increases, and the dynamic range of the resonant peak is largely affected by the composition and structure of the cross-linker and the copolymer. The localized temperature increase of silk particles with gold nanoparticles by laser heating can be measured by reading the spectral shift. In addition, a free-standing color board can be transferred onto a curved biological tissue sample, allowing us to simultaneously read the temperature of the tissue sample and the concentration of ethanol. The stimuli-responsive MIM provides a new way to optically sense localized environmental temperature and ethanol concentration fluctuations.
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