Fig. 2From: Antenna-enhanced mid-infrared detection of extracellular vesicles derived from human cancer cell culturesa Reflectance spectra of the metasurface as a function of the frequency for different values of the lattice constant. b Effect of the incident field polarization. c Resonance wavelength as a function of L1. d Reflectance spectra of a representative nanoantenna array in air and liquid environmentBack to article page