(a) Schematic representation of borophene. (b) HRTEM image, (c) TEM image, and (d) AFM image. Reprinted with permission from Ref. [62
]. Copyright 2018 John Wiley & Sons, Inc. (e) Diagrammatic drawing of liquid-phase exfoliation preparation of borophene. (f) HRTEM of borophene sheet with two phases. Reprinted with permission from Ref. [86
]. Copyright 2018 Royal Society of Chemistry.