当前位置:
X-MOL 学术
›
J. Am. Chem. Soc.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Capturing the Moment of Emergence of Crystal Nucleus from Disorder
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2021-01-21 , DOI: 10.1021/jacs.0c12100
Takayuki Nakamuro 1 , Masaya Sakakibara 1 , Hiroki Nada 2 , Koji Harano 1 , Eiichi Nakamura 1
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2021-01-21 , DOI: 10.1021/jacs.0c12100
Takayuki Nakamuro 1 , Masaya Sakakibara 1 , Hiroki Nada 2 , Koji Harano 1 , Eiichi Nakamura 1
Affiliation
![]() |
Crystallization is the process of atoms or molecules forming an organized solid via nucleation and growth. Being intrinsically stochastic, the research at an atomistic level has been a huge experimental challenge. We report herein in situ detection of a crystal nucleus forming during nucleation/growth of a NaCl nanocrystal, as video recorded in the interior of a vibrating conical carbon nanotube at 20-40 ms frame-1 with localization precision of <0.1 nm. We saw NaCl units assembled to form a cluster fluctuating between featureless and semiordered states, which suddenly formed a crystal. Subsequent crystal growth at 298 K and shrinkage at 473 K took place also in a stochastic manner. Productive contributions of the graphitic surface and its mechanical vibration have been experimentally indicated.
中文翻译:
从无序中捕捉晶核出现的时刻
结晶是原子或分子通过成核和生长形成有组织的固体的过程。由于本质上是随机的,原子水平的研究一直是一个巨大的实验挑战。我们在本文中报告了在 NaCl 纳米晶体的成核/生长过程中形成的晶核的原位检测,如在 20-40 ms 帧 1 处记录在振动锥形碳纳米管内部的视频,定位精度 <0.1 nm。我们看到 NaCl 单元组装形成一个在无特征和半有序状态之间波动的簇,突然形成了晶体。随后在 298 K 下的晶体生长和在 473 K 下的收缩也以随机方式发生。石墨表面及其机械振动的生产贡献已通过实验表明。
更新日期:2021-01-21
中文翻译:

从无序中捕捉晶核出现的时刻
结晶是原子或分子通过成核和生长形成有组织的固体的过程。由于本质上是随机的,原子水平的研究一直是一个巨大的实验挑战。我们在本文中报告了在 NaCl 纳米晶体的成核/生长过程中形成的晶核的原位检测,如在 20-40 ms 帧 1 处记录在振动锥形碳纳米管内部的视频,定位精度 <0.1 nm。我们看到 NaCl 单元组装形成一个在无特征和半有序状态之间波动的簇,突然形成了晶体。随后在 298 K 下的晶体生长和在 473 K 下的收缩也以随机方式发生。石墨表面及其机械振动的生产贡献已通过实验表明。