. However, all the past studies were
evaluated with only surface waves or free-space waves at a normal angle23,24,27, although in reality electromagnetic
waves scatter from various structures or boundaries and therefore illuminate such metasurfaces at oblique
angles. For this reason we clarify angular dependences of waveform-selective metasurfaces both numerically
and experimentally. Especially, this study focuses on two types of waveform-selective metasurfaces, specifically,
capacitor-based waveform-selective metasurfaces and inductor-based waveform-selective metasurfaces, each of
which more effectively absorbs short pulses and long pulses, respectively, at the same frequency26. This performance
remains unchanged for a wide range of incident angle but becomes reduced for a large incident angle, which
is also discussed to improve in this study. Our results demonstrated here are expected to open up possibilities to
apply the waveform selectivity for a wider range of electromagnetic applications even with angled waves.