应用型本科院校开放性实验的改革与探索——以电化学方向为例

在应用型本科院校中,为了培养电化学方向专业的创新性人才,教师应当改变传统电化学专业实验的教学理念,增加实验的开放性探究。因此,鼓励学生参与开放性的实验教学,使学生对专业课知识的理解加强,引导学生独立思考,培养学生创新能力,为学生将来继续深造和从事相关研究工作积累丰富的经验。教师在开放性实验教学中逐步凝练科学问题,促进相关科研课题的进一步延伸。同时,逐步改革实验教学内容和积累经验,提高学校的教学质量。形成实验教学和科研探索互动的教学模式,建立将教师的科研项目渗入到教学内容中的培养体制。通过建立开放性实验教学改革试点,使开放性实验教学模式在应用型本科院校各专业逐步推广。

Patterning Nanoroads and Quantum Dots on Fluorinated Graphene

Using ab initio methods we have investigated the fluorination of graphene and find that different stoichiometric phases can be formed without a nucleation barrier, with the complete ＂2D-Teflon＂ CF phase being thermody- namically most stable. The fluorinated graphene is an insulator and turns out to be a perfect matrix-host for patterning nanoroads and quantum dots of pristine graphene. The electronic and magnetic properties of the nanoroads can be tuned by varying the edge orientation and width. The energy gaps between the highest occupied and lowest unoccupied molecular orbitals （HOMO-LUMO） of quantum dots are size-dependent and show a confinement typical of Dirac fermions. Furthermore, we study the effect of different basic coverage of F on graphene （with stoichiometries CF and C4F） on the band gaps, and show the suitability of these materials to host quantum dots of graphene with unique electronic properties.