晶體生長機理ppt課件-資料下載頁
2024-11-03 22:39本頁面
【正文】 大學 ? A single molecule is denoted by C60 . 非平衡材料研究室 西安理工大學 ? Each molecule is posed of groups of carbon atoms that are bonded to one another to form both hexagon (sixcarbon atom) and pentagon (fivecarbon atom) geometrical configurations. 非平衡材料研究室 西安理工大學 ? One such molecule is found to consist of 20 hexagons and 12 pentagons, which are arrayed such that no two pentagons share a mon side。 the molecular surface thus exhibits the symmetry of a soccer ball. 非平衡材料研究室 西安理工大學 ? The material posed of C60 molecules is known as buckminsterfullerene, named in honor of R. Buckminster Fuller, who invented the geodesic dome. 非平衡材料研究室 西安理工大學 ? C60 is often referred to as ‘‘buckyball’’ for short. ? The term fullerene is used to denote the class of materials that are posed of this type of molecule. Here we are! 非平衡材料研究室 西安理工大學 Figure The structure of a C60 molecule. 非平衡材料研究室 西安理工大學 ? As a pure crystalline solid, this material is electrically insulating. However, with proper impurity additions, it can be made highly conductive and semiconductive. 非平衡材料研究室 西安理工大學 ? As a final note, molecular shapes other than the ball clusters recently have been discovered。 these include nanoscale tubular and polyhedral structures. 非平衡材料研究室 西安理工大學 ? It is anticipated that, with further developments, the fullerenes will bee technologically important materials. 非平衡材料研究室 西安理工大學 宏觀現象 微觀現象 遷移現象現象描述 物質合成 特性表征科學性問題材料制備 物性測定 應用技術性問題材料科學 材料科學
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