can still retain their circular cross section after B doping, and the relaxed BÀC and CÀC bond lengths are ∼1.56 and ∼1.42 Å, respectively, similar to those of BC3 sheet.
can still retain their circular cross section after B doping, and the relaxed BÀC and CÀC bond lengths are ∼1.56 and ∼1.42 Å, respectively, similar to those of BC3 sheet.