文献类型：期刊文献

英文题名：Titania single crystals with a curved surface

作者：Yang, Shuang[1];Yang, Bing Xing[2,3];Wu, Long[1];Li, Yu Hang[1];Liu, Porun[4];Zhao, Huijun[4];Yu, Yan Yan[2,3];Gong, Xue Qing[2,3];Yang, Hua Gui[1,4]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Ctr Computat Chem, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Res Inst Ind Catalysis, Shanghai 200237, Peoples R China;[4]Griffith Univ, Ctr Clean Environm & Energy, Gold Coast, Qld 4222, Australia

年份：2014

卷号：5

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000345739800003)】；

基金：This work was financially supported by the National Natural Science Foundation of China (21373083 and 21322307) and the National Basic Research Program (2011CB808505). We acknowledge Zhigang Chen for his support on TEM analysis. X.Q.G. also thanks the Shanghai Rising-Star Program (12QH1400700) and Computing time in the National Super Computing Center in Jinan.

语种：英文

摘要：Owing to its scientific and technological importance, crystallization as a ubiquitous phenomenon has been widely studied over centuries. Well-developed single crystals are generally enclosed by regular flat facets spontaneously to form polyhedral morphologies because of the well-known self-confinement principle for crystal growth. However, in nature, complex single crystalline calcitic skeleton of biological organisms generally has a curved external surface formed by specific interactions between organic moieties and biocompatible minerals. Here we show a new class of crystal surface of TiO2, which is enclosed by quasi continuous high-index microfacets and thus has a unique truncated biconic morphology. Such single crystals may open a new direction for crystal growth study since, in principle, crystal growth rates of all facets between two normal {101} and {011} crystal surfaces are almost identical. In other words, the facet with continuous Miller index can exist because of the continuous curvature on the crystal surface.