2017/05/17 by Matthew Parry, Andrei Komar, Ben Hopkins +7 · 49 citations
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Dielectric #Embedding #Metamaterial #Metamaterials and Metasurfaces Applications #Plasmonic and Surface Plasmon Research #Q factor #Quality (philosophy) #Refractive index #Resonance (particle physics) #Silicon #physics.optics
paper · pdf · doi:10.1063/1.4997301
published in Applied Physics Letters 111(5) (American Institute of Physics) · 4 pages, 6 figures
arxiv created 2017/05/17 · openalex created_date 2017/05/26 · openalex publication_date 2017/07/31 · arxiv updated 2017/08/04 · openalex updated_date 2026/08/05
We demonstrate the active tuning of all-dielectric metasurfaces exhibiting high-quality factor (high-Q) resonances. The active control is provided by embedding the asymmetric silicon meta-atoms with liquid crystals, which allows the relative index of refraction to be controlled through heating. It is found that high quality factor resonances (Q = 270 ± 30) can be tuned over more than three resonance widths. Our results demonstrate the feasibility of using all-dielectric metasurfaces to construct tunable narrow-band filters.