期刊
OPTICAL MATERIALS
卷 80, 期 -, 页码 241-246出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optmat.2018.04.054
关键词
Metal-insulator-metal resonator; Silk protein; Hydrogel; Ultra-thin color absorber; Refractometric sensor
资金
- National Research Foundation (NRF), Republic of Korea [2017R1A2B4010807]
- GRRC program of Gyeonggi province [GRRC-AJOU-2016-B01]
- Korea Institute of Energy Technology Evaluation and Planning [20164030201380]
Planar and multilayered photonic devices offer unprecedented opportunities in biological and chemical sensing due to strong light-matter interactions. However, uses of rigid substances such as semiconductors and dielectrics confront photonic devices with issues of biocompatibility and a mechanical mismatch for their application on humid, uneven, and soft biological surfaces. Here, we report that favorable material traits of natural silk protein led to the fabrication of an ultra-thin, conformal, and water-permeable (hydratable) metal-insulator-metal (MIM) color absorber that was mapped on soft, curved, and hydrated biological interfaces. Strong absorption was induced in the MIM structure and could be tuned by hydration and tilting of the sample. The transferred MIM color absorbers reached the exhibition of a very strong resonant absorption in the visible and near infra-red ranges. In addition, we demonstrated that the conformal resonator could function as a refractometric glucose sensor applied on a contact lens.
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