Cryo-mediated exfoliation and fracturing of layered materials into 2D quantum dots.

Atomically thin quantum dots from layered materials promise new science and applications, but their scalable synthesis and separation have been challenging. We demonstrate a universal approach for the preparation of quantum dots from a series of materials, such as graphite, MoS, WS, h-BN, TiS, NbS, BiSe, MoTe, SbTe, etc., using a cryo-mediated liquid-phase exfoliation and fracturing process.