水纳米液滴的成核动力学
Nucleation dynamics of water nanodroplets.
作者信息
Bhattacharya Dipanjan, Bosman Michel, Mokkapati Venkata R S S, Leong Fong Yew, Mirsaidov Utkur
机构信息
1 Center for BioImaging Sciences, Department of Biological Sciences, National University of Singapore, 14 Science Drive 4, Singapore 117543, Singapore.
3 Institute of Materials Research and Engineering, A*Star (Agency for Science and Technology), 3 Research Link, Singapore 117602, Singapore.
出版信息
Microsc Microanal. 2014 Apr;20(2):407-15. doi: 10.1017/S1431927614000476. Epub 2014 Mar 26.
The origin of the condensation of water begins at the nanoscale, a length-scale that is challenging to probe for liquids. In this work we directly image heterogeneous nucleation of water nanodroplets by in situ transmission electron microscopy. Using gold nanoparticles bound to a flat surface as heterogeneous nucleation sites, we observe nucleation and growth of water nanodroplets. The growth of nanodroplet radii follows the power law: R(t)(t-t 0) β , where β0.2-0.3.
水的凝结起源于纳米尺度，这是一个对液体进行探测具有挑战性的长度尺度。在这项工作中，我们通过原位透射电子显微镜直接成像水纳米液滴的异质成核。使用结合在平坦表面上的金纳米颗粒作为异质成核位点，我们观察到了水纳米液滴的成核和生长。纳米液滴半径的增长遵循幂律：R(t)(t - t0)β，其中β0.2 - 0.3。
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