Nano Archive

Synthesis of nanocrystals via microreaction with temperature gradient: towards separation of nucleation and growth

Yang, Hongwei and Luan, Weiling and Tu, Shan-tung and Wang, Zhiming M. (2008) Synthesis of nanocrystals via microreaction with temperature gradient: towards separation of nucleation and growth. LAB ON A CHIP, 8 (3). pp. 451-455.

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Official URL: http://www.rsc.org/publishing/journals/LC/article....

Abstract

By utilizing the symmetrical temperature distribution in a tube furnace chamber, a capillary microreactor was designed with the microchannel passing two well-controlled, stable temperatures in steep temperature gradients. The two-temperature microreator, first developed and implemented by this research team, provides an opportunity to separate the nucleation and growth of semiconductor nanocrystals, leading to better control of nucleation and growth kinetics. For the synthesis of CdSe nanocrystals as a model system, we demonstrated the improved size uniformity achieved by the two-temperature approach, confirming the success of the use of high temperature to burst nucleation and low temperature to promote growth.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
ID Code:5884
Deposited By:IoN
Deposited On:06 Aug 2009 10:40
Last Modified:06 Aug 2009 10:40

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