Precision Tailoring Quasi-BIC Resonance of a-Si:H Metasurfaces.

ABSTRACT: The capability of tailoring the resonance wavelength of metasurfaces is important as it can alleviate the manufacturing precision required to produce the exact structure according to the design of the nanoresonators. Tuning of Fano resonances by applying heat has been theoretically predicted in the case of silicon metasurfaces. Here, we experimentally demonstrate the permanent tailoring of quasi-bound states in the continuum (quasi-BIC) resonance wavelength in an a-Si:H metasurface and quantitatively analyze the modification in the Q-factor with gradual heating. A gradual increment in temperature leads to a spectral shift in the resonance wavelength. With the support of ellipsometry measurements, the spectral shift resulting from the short-duration (ten minutes) heating is identifie

SUBMITTER: Kuppadakkath A 

PROVIDER: S-EPMC10255339 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature