TEM image of GO.
Weihua Xu, Chun Wei, Jian Lv, Hongxia Liu, Xiaohua Huang, Tianxi Liu
CC BY 4.0
Weihua Xu et. al. "Preparation, Characterization, and Properties of In Situ Formed Graphene Oxide/Phenol Formaldehyde Nanocomposites", Journal of Nanomaterials <a rel="nofollow" class="external text" href="https://doi.org/10.1155/2013/319840">doi:10.1155/2013/319840</a>