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Citation: WANG Wei, LIU Zhen-Bang, BAO Yu, GUAN Yi-Ran, NIU Li, ZHANG Guo-Yu. Application of Digital Image Processing Technology in Scanning Electrochemical Microscope[J]. Chinese Journal of Analytical Chemistry, ;2018, 46(3): 342-347. doi: 10.11895/j.issn.0253-3820.171418 shu

Application of Digital Image Processing Technology in Scanning Electrochemical Microscope

WANG Wei ^1,2, ,
LIU Zhen-Bang ² ,
BAO Yu ³ ,
GUAN Yi-Ran ² ,
NIU Li ³ ,
ZHANG Guo-Yu ¹

1.
The School of Photo-Electronic Engineering, Changchun University of Science and Technology, Changchun 130022, China;
2.
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China;
3.
Center for Advanced Analyticl Science, C/O School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, China

Received Date: 13 November 2017
Revised Date: 27 December 2017

Fund Project: This work was supported by the National Natural Science Foundation of China (Nos.21527806, 21405147).

Ultramicroelectrode was usually used in scanning electrochemical microscope (SECM) as a probe. The redox reaction on the probe is a diffusion process. But the fast moving of probe in SECM will affect the diffusion process, resulting in unclear obtained images. A new SECM image-processing technique was proposed in this paper involving combination of LoG algorithm and New edge-directed interpolation (NEDI) interpolation algorithm. LoG algorithm is helpful for the clarity of SECM images, but leading to some loss of edge information. Fortunately, NEDI algorithm based on edge directed interpolation can solve this problem well. Two substrates with gold interdigitated electrode and gold electrode array were prepared by ion sputtering method. The SECM images were obtained of the gold interdigitated electrode, gold electrode array and ITO substrate printed with fingerprints. The corresponding images treated by LoG filter and these for NEDI interpolation were compared and analyzed. The image-processing technique combining the LoG algorithm with the NEDI interpolation algorithm can significantly improve the clarity and resolution of SECM image.
- Scanning electrochemical microscope,
- Image-processing,
- LoG algorithm,
- New edge-directed interpolation interpolation
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