IDA (Interdigitated Array) Electrode - 2 µm

More fine IDA (Pt/Au) Electrode has been developed. Its 2 µm pitch working electrodes significantly increase redox cycle and allow researchers to perform high-ultra-sensitive measurement.

Technical data concerning IDA Electrode 2 µm

A CV curve obtained by 2 µm IDA Electrode Au.
 

CV by Single mode

• Sample: 1 mM ferrocene methanol (0.5 M NaCl solution)
• Mode: Single
• Sweep Rate: 10 mV/s

CV by Dual mode

• Sample: 1 mM ferrocene methanol (0.5 M NaCl solution)
• Mode: Dual
• Sweep Rate at G-Electrodes: 10 mV/s
• Applied Voltage to C-Electrodes: -0.05 V
  Its collection efficiency was proved to be 97% by our calculation from limiting current of Collector electrodes and Generator electrodes.

Capture Efficiency

Compared with IDA Au 10 µm and 3 µm, the capture efficiency of the 2 µm is higher, 93% for 10 µm and 95% for 3 µm.
For 2 µm electrode,　the limiting current of ferrocene methanol by CV Dual mode was 11 times as much as of the peak current by Single mode, while this ratio for 10 µm and 3 µm electrode were about 4 and 7.5, respectively.　This means large increase of the redox cycle.


 

New Product

New width in the product line, and you could have 2 µm IDA with or without passivation membrane.

 

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