Labyrinth metasurface absorber for ultra-high-sensitivity terahertz thin film sensing

The authors acknowledge support from the Spanish Ministerio de Economia y Competitividad (MINECO) under Contract TEC2014-51902-C2-2-R, the NSU program 5-100 established by the Russian Ministry of Education and Science, and the State Assignment Program of the Rzhanov Institute of Semiconductor Physics SB RAS (Project No. 0306-2016-0020).