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By the decomposition of copper nitrate at 400℃, oriented islands of copperoxide crystals were suceessfully fabricated on the amorphous glass surface. X-ray diffraction (XRD), atom force microscope (AFM), and X-ray photoelectron spectroscopy (XPS) confirm the presence of copper oxide islands. The formation of oriented island structures is attributed to the following reasons: 1) the mismatch between the glass substrate and the copper oxide crystals during the relaxation of thermal expansion leads to the formation of islands; 2) the preorganized copper nitrate particles in the voids of colloidal crystals determine their ordered spatial distribution; 3) the strain of the glass substrate developing during calcination provides the driven energy for the orientation of copper oxide crystals along the same direction. 相似文献
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1 Introduction The preparation of hollow spheres in the nanometer to micrometer scale is of particular interest due to their specific structure and wide applications in artificial cells[1], light-mass structured materials[2,3], catalysts[4], controlled re… 相似文献
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针对《化工设备机械基础》课程设计教学中存在的问题,提出了基于CDIO工程教育模式的课程设计教改方案。方案的实施,将有利于提高学生的工程素质和工程设计、创新能力,同时提高了教师的工程教学能力。 相似文献
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