23045
This reveals the crucial role of the plane - electrode area which screens access to the recessed disks ( i . e . acts as a diffusional Faraday cage ) and simultaneously contributes to amplification of the analyte signal through positive feedback , as occurs in interdigitated arrays and scanning electrochemical microscopy .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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