2009/07/10 by Shumin Xiao, Uday K. Chettiar, Xiao, Shumin +11
Engineering · Materials Science · Physics and Astronomy · #Advanced Antenna and Metasurface Technologies #Advanced Materials and Mechanics #FOS: Physical sciences #Liquid Crystal Research Advancements #Optics (physics.optics) #physics.optics
paper · pdf · doi:10.48550/arxiv.0907.1871
arxiv created 2009/07/10 · openalex publication_date 2009/07/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We demonstrate a thermally tunable optical metamaterial with negative permeability working in the visible range. By covering coupled metallic nanostrips with aligned nematic liquid crystals (NLCs), the magnetic response wavelength of the metamaterial is effectively tuned through control of the ambient temperature, changing the refractive index of LC via phase transitions. By increasing the ambient temperature from 20 degree to 50 degree, the magnetic response wavelength shifts from 650nm to 632nm. Numerical simulations confirm our tests and match the experimental observations well.