| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 가을 (11/08 ~ 11/10, 부산 벡스코(BEXCO)) |
| 권호 |
21권 2호 |
| 발표분야 |
(콜로이드계면화학) 최신 콜로이드 기반 융합 기술 |
| 제목 |
3D atomic structures of individual colloidal nanoparticles |
| 초록 |
Understanding details of atomic structures and changes of nanoparticles during growth, structure changes is very important since they determine physical and chemical properties of nanoparticles. However, due to their small size and heterogeneity, static and dynamic structure information of nanoparticles in their native solution phase cannot be easily accessible by conventional analytical methods. We observe the diffraction patterns from individual Pt nanoparticles as they rotate in the liquid cell, and we are able to align those images to obtain the 3D atomic structure of individual particles freely moving in liquid. We also perform time-resolved 3D structure reconstruction of a nanoparticle while the particle undergoes structural changes in solution. The time-resolved 3D density map shows details of spatial fluctuation of individual atoms during structural transition of a single nanoparticle. |
| 저자 |
박정원 |
| 소속 |
서울대 |
| 키워드 |
3D structure; nanoparticle; liquid phase TEM
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| E-Mail |
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