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Optical Engineering

Charge-density flux model for electric-field-assisted ion exchange in glass
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Paper Abstract

A model based on the charge-density flux (CDF) is proposed for the electric-field-assisted (EFA) ion-exchange, which is suitable for various EFA ion exchanging processes. Theoretical analysis shows that the CDF model is equivalent to the voltage model when the local temperature change around the glass wafer is negligible when a constant voltage is applied to the ion exchanging process. However, our experiments show that the CDF model is more applicable than the voltage model because the constant-voltage scheme shows a positive feedback process and the local temperature rising is unavoidable in the ion exchanging process. Our further experiments also show that the EFA ion exchanging process can be conveniently characterized by the proposed CDF model with the monitored electrical current, no matter the EFA ion exchanging process is with a constant-voltage/current scheme, a mixed scheme, or even a scheme with random voltage change, while additional complicated measures will be required to characterize the EFA ion exchanging process with the traditional voltage model.

Paper Details

Date Published: 1 September 2011
PDF: 9 pages
Opt. Eng. 50(9) 094602 doi: 10.1117/1.3628558
Published in: Optical Engineering Volume 50, Issue 9
Show Author Affiliations
Weiwei Zheng, Zhejiang Univ. (China)
Bing Yang, Zhejiang Univ. (China)
Yinlei Hao, Zhejiang Univ. (China)
Minghua Wang, Zhejiang Univ. (China)
Xiaoqing Jiang, Zhejiang Univ. (China)
Jianyi Yang, Zhejiang Univ. (China)

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