Z H Sun et al 2009 J. Phys.: Conf. Ser. 190 012120 doi:10.1088/1742-6596/190/1/012120
Z H Sun1,2, H Oyanagi1,2, M Uehara3, K Yamashita3, A Fukano1 and H Maeda3,4,5
Show affiliationsAn in-situ EXAFS method is developed to study the nucleation and growth processes of nanocrystals by using a microfluidic reactor which converts the time-dependent kinetics to position-dependence. As an example, we measured the Se K-edge EXAFS spectra for CdSe nanocrystals along a microfluidic reactor channel and indicated strong time-dependence of the nucleation and growth at the beginning of the reaction. A rapid increase of the reaction yield within several seconds was observed. It is found that after injection of starting materials, the nucleation occurs abruptly and the CdSe nuclei concentration reaches the maximum and then declines rapidly.
81.07.Bc Nanocrystalline materials
78.70.Dm X-ray absorption spectra
78.67.Bf Nanocrystals and nanoparticles
81.16.-c Methods of nanofabrication and processing
61.05.cj X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc.
Condensed matter: electrical, magnetic and optical
Issue 1 (2009)
Z H Sun et al 2009 J. Phys.: Conf. Ser. 190 012120
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