Metasurfaces that can be reconfigured by microelectromechanical systems allow extreme switching in scattering parameters.
The Visible and Near-IR Imaging Spectrometer onboard China's Chang'E 3 lunar rover uses non-collinear acousto-optic tunable filters to make mineralogical and compositional measurements.
SPIE Newsroom21 November 2014
SPIE Newsroom 6 November 2014
National Science Foundation 6 November 2015