A compromise between competing forces dominating the diversity of aragonite structures
文献类型：期刊论文
| 作者 | Wang, Han1,2; Han, Yongsheng1 |
| 刊名 | CRYSTENGCOMM
 |
| 出版日期 | 2014 |
| 卷号 | 16期号:10页码:1971-1977 |
| 关键词 | imperfect oriented attachment calcium-carbonate brownian migration nonclassical crystallization crystal-growth mesocrystals surface morphology epitaxy polyelectrolyte |
| ISSN号 | 1466-8033 |
| 其他题名 | Crystengcomm |
| 中文摘要 | Material scientists have a strong interest in finding the reasons causing the diversity of material structures. Here, we show a different story in disclosing the mechanism dominating material structures. When we synthesize calcium carbonate particles at increased temperatures, we observe that the structures of the particles change with temperature. At a relatively low temperature (60 degrees C), dumbbell shaped particles are largely formed while straight particles are dominantly formed at a relatively high temperature (90 degrees C). By simulation, we find that the crystallite of aragonite is polarized after the adsorption of water molecules on its surface. The polarization is anisotropic, which makes the attachment of crystallites have different stabilities along different attaching directions. At an increased temperature, the attachment is easily destructed by Brownian motion which is dependent on temperature. Therefore, the adsorbing force provided by polarization competes with the destructive force induced by the Brownian motion. The compromise between these two competing forces dominates the stable structure of calcium carbonate particles. Hence, the compromise in competition between attractive forces and destructive forces leads to the diversity of aragonite structures, which indicates a new direction in discovering the diversity of material structures. |
| 英文摘要 | Material scientists have a strong interest in finding the reasons causing the diversity of material structures. Here, we show a different story in disclosing the mechanism dominating material structures. When we synthesize calcium carbonate particles at increased temperatures, we observe that the structures of the particles change with temperature. At a relatively low temperature (60 degrees C), dumbbell shaped particles are largely formed while straight particles are dominantly formed at a relatively high temperature (90 degrees C). By simulation, we find that the crystallite of aragonite is polarized after the adsorption of water molecules on its surface. The polarization is anisotropic, which makes the attachment of crystallites have different stabilities along different attaching directions. At an increased temperature, the attachment is easily destructed by Brownian motion which is dependent on temperature. Therefore, the adsorbing force provided by polarization competes with the destructive force induced by the Brownian motion. The compromise between these two competing forces dominates the stable structure of calcium carbonate particles. Hence, the compromise in competition between attractive forces and destructive forces leads to the diversity of aragonite structures, which indicates a new direction in discovering the diversity of material structures. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary ; Crystallography |
| 研究领域[WOS] | Chemistry ; Crystallography |
| 关键词[WOS] | IMPERFECT ORIENTED ATTACHMENT ; CALCIUM-CARBONATE ; BROWNIAN MIGRATION ; NONCLASSICAL CRYSTALLIZATION ; CRYSTAL-GROWTH ; MESOCRYSTALS ; SURFACE ; MORPHOLOGY ; EPITAXY ; POLYELECTROLYTE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000331176000014 |
| 公开日期 | 2014-05-06 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/8060]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, EMMS Grp, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Han,Han, Yongsheng. A compromise between competing forces dominating the diversity of aragonite structures[J]. CRYSTENGCOMM,2014,16(10):1971-1977. |
| APA | Wang, Han,&Han, Yongsheng.(2014).A compromise between competing forces dominating the diversity of aragonite structures.CRYSTENGCOMM,16(10),1971-1977. |
| MLA | Wang, Han,et al."A compromise between competing forces dominating the diversity of aragonite structures".CRYSTENGCOMM 16.10(2014):1971-1977. |
入库方式： OAI收割
来源：过程工程研究所
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