Metalens and microtaper spectrometers on a fingertip.
Peixia ZhengXuan ZhangHong-Chao LiuPublished in: Light, science & applications (2023)
A multi-foci metalens and a leaky-mode microtaper provide innovative platforms to achieve high-resolution, wideband light spectra in millimeter-sized devices, thereby paving new ways for the commercialization of on-fingertip spectrometers.