在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Content Introduction to graphene.Preparation and characterization graphenePotential application of grapheneConclusions在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Graphene is a one-atom-thick planar sheet of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice石墨烯是sp2 键合的碳原子的单原子厚的平面片，其紧密地包装在蜂窝状晶格中The name graphene comes from graphite + -ene = grapheneHighresolutiontransmissionelectronmicroscopeimages(TEM)ofgr
