IDA (Interdigitated Array) Electrode 3 µm
More fine IDA (Pt/Au) Electrode has been developed. Its 3 µm pitch working electrodes significantly increase redox cycle and allow
researchers to perform ultra-sensitive measurement.
IDA Au (3 µm)
We recommend to apply Ag/AgCl ink to a reference electrode in order to stabilize potential of the electrode.
Micro Volume Sample Measurement with IDA Electrode 3 µm and Cable kit
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Insert IDA Electrode 3 µm onto Cable kit
This electrode can be used with Cable kit for IDA electrode (Catalog No.011066).
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Put sample solution by dropping on the IDA electrode
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Make the solution to cover comb-shaped working electrode, reference electrode and counter electrode
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Researchers can comfortably measure by using a Dual electrochemical analyzer such as ALS800B series and 700C series.
Technical data concerning IDA Electrode 3 µm
Fig. 1 -- Accuracy
A CV curve obtained by 3 µm IDA Electrode Au [A] mirrored that of 3 µm IDA Electrode Au [B], which means both of the IDA Electrodes were produced very accurately.
- Left: 3 µm IDA Electrode Au [A]; Right: 3 µm IDA Electrode Au [B]
- Sample: ferrocene methanol (1 mM/ 0.5 M NaCl solution)
- Mode: Single
- Sweep Rate: 30 mV/s
Fig. 2 -- CV by Dual mode
- Mode: Dual
- Sweep Rate at G-Electrodes: 10 mV/s
- Applied Voltage to C-Electrodes: -0.2 V
Fig. 3 & 4 -- Comparison of 3 µm IDA Au with 5 µm by Dual Mode
For 3 µm electrode, the limiting current of ferrocene methanol by CV Dual mode was 8 times as much as of the peak current by Single mode, while this ratio for 5 µm electrode was about 4. This means large increase of the redox cycle.
Figure 3. IDA Electrode: 3 µm Au Sweep Rate: 10 mV/s |
Figure 4. IDA Electrode: 5 µm Au Sweep Rate: 10 mV/s |
| *Larger area in 5 µm IDA electrode gives the appearance as if its absolute current is larger than 3 µm of IDA | |
Fig. 5 -- Capture Efficiency
Figure 5 shows a result of LSV Dual mode measurement. Its collection efficiency was proved to be 96.4% by our calculation from limiting current of Collector electrodes and Generator electrodes.
- Method: LSV (Linear Sweep Voltammetry)
- Mode: Dual
- Sample: ferrocene methanol (1 mM/0.5 M NaCl solution)
- Sweep Rate: 10 mV/s
Besides CV and LSV electrochemical techniques, our IDA electrode is available for various electrochemical measuring techniques such as chronoamperometry, normal pulse voltammetry, differential pulse voltammetry etc.
Researchers can obtain more insights by using IDA electrodes.
| Catalog No. | Description | Width (µm) | Interval (µm) | Length (mm) | Number of feet (pairs) |
| 011955 | IDA electrode (Au) 3 µm | 3 | 3 | 2 | 65 |
| 011956 | IDA electrode (Pt) 3 µm | 3 | 3 | 2 | 65 |
Accessories
| Catalog No. | Description |
| 011066 | Cable kit for IDA electrode |
| 011464 | Ag/AgCl Ink for reference electrode (2.0 mL) |
