Stability of crystalline phase in colloidal gas-liquid-solid phase separation
| Autor: | Miyoshi, Saki, Ishikawa, Masamichi |
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| Jazyk: | japonština |
| Rok vydání: | 2011 |
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| Zdroj: | 宇宙利用シンポジウム: 第27回: 平成22年度 = Space Utilization Research, Vol. 27 2011: Proceedings of The Twenty-seventh Space Utilization Symposium. 27:1-2 |
| Popis: | 第27回宇宙利用シンポジウム (2011年1月24日-25日, 宇宙航空研究開発機構宇宙科学研究所相模原キャンパス), 相模原市, 神奈川県 The Twenty-seventh Space Utilization Symposium (January 24-25, 2011. Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)), Sagamihara, Kanagawa Japan We report that polystyrene colloids, which are initially homogeneous particles, spontaneously transform into gas, liquid, and solid phases in aqueous solvents and that their phase relations are detemined by a common phase diagram containing the gas-liquid critical point. The crystallinity of colloidal crystals was evaluated by the Delaunay triangulation. In this method, the particle position are connected each other and triangles are generated. Here we define the ratio of the number of regular triangles to the total number as the crystallinity. As a result, we found the maximum crystallinity at a salt concentration. We examined the factor which control the stability of crystals based on this result. 形態: カラー図版あり Physical characteristics: Original contains color illustrations 資料番号: AA0065129001 |
| Databáze: | OpenAIRE |
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