 In 2015 two research teams succeeded in synthesizing different borophene phases on silver (111) surfaces under ultrahigh-vacuum conditions.Among the three borophene phases synthesized (see Figure 1), the v1/6 sheet, or "β"12, was shown by an earlier theory to be the ground state on the Ag(111) surface, while the "χ"3 borophene was previously predicted by Zeng team in 2012.So far, borophenes exist only on substrates; how to transfer them onto a device-compatible substrate is necessary, but remains a challenge.