Theoretical study in dual-channel quasi bound-states in the continuum in YaBa2Cu3O7 ceramic split-ring resonator metasurface and multi-functional responsive sensing
In recent years, quasi-bound-states in the continuum (q-BIC) have been widely studied, and mechanisms for exciting q-BIC have been continuously proposed. In the research of q-BIC, symmetric-protecting q-BIC is an important branch, and as a classic metasurface design scheme, a split-resonant ring (SR...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525005180 |
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| Summary: | In recent years, quasi-bound-states in the continuum (q-BIC) have been widely studied, and mechanisms for exciting q-BIC have been continuously proposed. In the research of q-BIC, symmetric-protecting q-BIC is an important branch, and as a classic metasurface design scheme, a split-resonant ring (SRR) has been found to excite q-BIC. A dual-channel q-BIC design is proposed based on the symmetry-breaking property of YaBa2Cu3O7 ceramic SRR metasurface. Two asymmetry parameters are introduced into YaBa2Cu3O7 ceramic SRR metasurface, which can excite q-BIC channels at two frequency positions, respectively. This characteristic is utilized to analyze sample thickness and detect refractive index separately at two q-BIC channels. The q-BIC channel 1 is used as a responsive thickness sensor to detect the thickness of the sample layer. The q-BIC channel 2 realizes the function of refractive index detection. Herein, a method is provided for exciting dual-channel q-BIC and utilizing the high quality factor of q-BIC to achieve multi-functional sensing. It has enormous potential value in biomedical and environmental monitoring fields. |
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| ISSN: | 0264-1275 |