It's got a high chemical affinity for oxygen, and it wasn't discovered in its pure variety until 1823 by Jöns Jakob Berzelius. The leading advantage of epitaxial graphene growth on silicon carbide about other approaches is to obtain graphene levels specifically on the semiconducting or semi-insulating substrate that is commercially https://www.facebook.com/permalink.php?story_fbid=pfbid0ZH2jhnQuVnNsrf7xUngo6hnw8VNigrx8w64W2Ji5AUpczagcBgWpHE8kvQZWBEFkl&id=61562415773754&__cft__[0]=AZUv0AZ4Vzq2mZEo3P_lStgda1Mk_448-06NRE4cd3PevlhWAXppnGNb_Jbst-BWjKh_l5FL6V7cJ9WmuzUiDy6PdQe8Khi5JYxgHpgu2DYx_sAnNwVcdA-e5yaNTkA_4-8Vd79cbC7DMnkPzKjEOnikkaHkHQKTMTa-RNax5u235d9FCHnjGdOg3qI6pgBkAxWqhjiXTS6S_X9n73ZnOYpO&__tn__=%2CO%2CP-R