Real-time in situ observation of shear modulus evolution during Ostwald ripening of colloidal crystallization
文献类型：期刊论文
| 作者 | Zhou HW(周宏伟) ; Xu SH(徐升华); Sun ZW(孙祉伟)
|
| 刊名 | JOURNAL OF CRYSTAL GROWTH
 |
| 出版日期 | 2018-11-15 |
| 卷号 | 502页码:35-40 |
| 关键词 | Colloidal crystal Crystallization Ostwald ripening Shear modulus |
| ISSN号 | 0022-0248 |
| DOI | 10.1016/j.jcrysgro.2018.06.027 |
| 英文摘要 | Real-time in situ observation of evolution of shear modulus during the crystallization and ripening of colloidal particles suspensions was conducted by using reflection spectrum and torsional resonance spectroscopy simultaneously. According to the structural information obtained by reflection spectrum, after the completion of nucleation, the crystallization can be basically divided into four stages: crystallization-dominated stage, crystallization and ripening coexistence stage, ripening-dominated stage and crystallization completion stage. Colloidal particles volume fraction significantly affects the duration of each stage. Our experiments showed that the ripening process is the main cause for the improvement of the mechanical strength (the increase of shear modulus). This observation is supposed to be associated with the diminishing of crystal interface as the result of the increase in crystallites size and the decrease in crystallites number during the ripening process. In addition, a theoretical analysis is given briefly on the softening effect induced by nonaffinity of disordered particles in interface region. |
| 分类号 | Q3 |
| URL标识 | 查看原文 |
| WOS关键词 | MECHANICAL-PROPERTIES ; ELASTIC-CONSTANTS ; PHASE-TRANSITION ; X-RAY ; CRYSTALS ; KINETICS ; NANOPARTICLES ; SPHERES ; FCC ; NANOCRYSTALS |
| WOS研究方向 | Crystallography ; Materials Science, Multidisciplinary ; Physics, Applied |
| 语种 | 英语 |
| WOS记录号 | WOS:000445909700006 |
| 资助机构 | National Natural Science Foundation of China [11672295, 11572322, 11302226] |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/77865]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, Natl Micrograv Lab, Key Lab Micrograv, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100149, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou HW,Xu SH,Sun ZW. Real-time in situ observation of shear modulus evolution during Ostwald ripening of colloidal crystallization[J]. JOURNAL OF CRYSTAL GROWTH,2018,502:35-40. |
| APA | 周宏伟,徐升华,&孙祉伟.(2018).Real-time in situ observation of shear modulus evolution during Ostwald ripening of colloidal crystallization.JOURNAL OF CRYSTAL GROWTH,502,35-40. |
| MLA | 周宏伟,et al."Real-time in situ observation of shear modulus evolution during Ostwald ripening of colloidal crystallization".JOURNAL OF CRYSTAL GROWTH 502(2018):35-40. |
入库方式： OAI收割
来源：力学研究所
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