A planar-sheet nongraphitic zero-bandgap sp 2 carbon phase made by the low-temperature reaction of γ-graphyne - Ali E. Aliev; Yongzhe Guo; Alexandre F. Fonseca; Joselito M. Razal; Zhong Wang; Douglas S. Galvão; Claire M. Bolding; Nathaniel E. Chapman-Wilson; Victor G. Desyatkin; Johannes E. Leisen; Luiz A. Ribeiro Junior; Guilherme B. Kanegae; et al. (Proceedings of the National Academy of Sciences, 2025)