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IDA (Interdigitated
Array) Electrode 5µm
Cyclic Voltammetry Measurement using IDA Electrode
Inter digitated 65 pairs of generator / collector electrodes set off
electrochemical RedOx cycling continuously as shown in Fig. 1. This
reaction significantly boosts sensitivity of the electrode.
Furthermore, samples are preserved when Dual (Red-Ox) Mode is chosen
- Not like as Single Mode eats up samples at measurements.
Fig. 3 shows voltammograms of ferrocene samples ((a),(c): 10 µL , (b),(d):
0.2 µL) using IDA electrode ((a),(b): Dual mode; (c),(d): Single
Mode). As they indicate, measuring mode makes obvious difference on
their responses. Dual mode reinforces reduction current at collector
electrodes with increase of oxidation current at generator
electrodes. At the measurement (d), response is scarcely obtained
because the sample was consumed during the experiment
|
Catalog No. |
Description |
Width (µm) |
Interval (µm) |
Length (mm) |
Number of feet (pairs) |
|
A-012125 |
IDA electrode (Au) |
10 |
5 |
2 |
65 |
|
A-012126 |
IDA electrode (Pt) |
10 |
5 |
2 |
65 |
|
A-012127 |
IDA electrode (Carbon) |
10 |
5 |
2 |
65 |
|
A-012128 |
IDA electrode (ITO) |
10 |
5 |
2 |
65 |
IDA Electrode Connecting Cable kit This device
can be used as a substituting item of a connecting part of IDA
Electrode.
|
Catalog No. |
Description |
| A-011066 |
Cable kit for IDA electrode |
|
Components |
| Connecting Cable |
| Electrode fixer |
| Mini Vice |
Please treat IDA Electrodes with care especially when you insert
and remove them since it consist of quartz glass. If you had a
difficulty in setting up of an IDA Electrode into a connector at the
cable, loosening the four grippers of the connector(shown in a
figure below) with a tweezer would work.
Figure in right shows wire assembly of connecting cable.
In order to avoid abrasion on a connector part of the electrode,
please insert and remove it according to the following order:
[IDA Electrode Set Up Sequence]
- Put the IDA electrode into the connector
- Insert the white color electrode fixer into the connector
[IDA Electrode Remove Sequence]
- Remove the white color electrode fixer from the
connector
- Remove the IDA electrode from the connector
IDA (Interdigitated Array) Electrode 3µm
More fine IDA(Pt/Au) Electrode was developed. Its 3µm
pitch working electrodes significantly increase redox
cycle and allow reserachers to perform ultra-sensitive
measurement.
 
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 3µm and Cable kit
- Insert IDA Electrode 3µm onto Cable kit
This electrode can be used with Cable kit for IDA
electrode (Catalog No.A-011066).
- Put sample solution by drops on the IDA
electrode. Make the solution to cover the
comb-shaped working electrode, the reference
electrode and the counter electrode.
Technical data concerning IDA Electrode 3µm
Fig 1 - Accuracy A CV curve obtained by 3µm
IDA Electrode Au[A] mirrored that of 3µm IDA
Electrode Au[B], which means both of the IDA
Electrodes were produced very accurately.
Left: IDA Electrode 3µm Au[A], Right: IDA
Electrode 3µm 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 IDA 3µm with 5µm 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 5μm Electrode was about 4. This
means large increase of the redox cycle.
 |
 |
Fig3.
IDA Electrode: 3µm Au
Sweep Rate: 10 mV/s |
Fig.4
IDA Electrode: 5µm Au
Sweep Rate: 10 mV/s |
| *Larger area in 5µm IDA
Electrode gives the appearance as if its
absolute current is larger than 3µm of
IDA |
Fig.5 - Capture Efficiency
Fig.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) |
|
A-012129 |
IDA electrode (Au) 3 µm |
3 |
3 |
2 |
65 |
|
A-012130 |
IDA electrode (Pt) 3 µm |
3 |
3 |
2 |
65 |
Accessories
|
Catalog No. |
Description |
|
A-011066 |
Cable kit for IDA electrode |
|
A-011464 |
Ag/AgCl Ink for reference
electrode (2.0 mL) |
Printed Type Ring Disk Electrodes
 |
This ring-disk type electrode developed by NTT-AT is a
form of printed electrodes. Users can choose them from
Carbon, Gold and Platinum applied versions. Available as a
working electrode of radial flow cells, achieves complete
reduction/oxidation on the center disk at ultra-low flow
rate because of its fine coulometric electrolysis efficiency.
This also enables to analyze subsequent reaction as well as
identification and qantitation of the sample at the same
time. Furthermore, this electrode becomes capable of
measuring hydrogen peroxide at zero volt by fixing Osmium
Gel / HRP (Horseradish Peroxidase)
(developed by Prof. Adam Heller, Texas Univ.). Thus this
Printed electrode comprises FIA (Flow Injection Analysis)
system with combinations of various enzymes. |
| Catalog No. |
Description |
Ring (mm) |
Disk
(mm) |
| OD |
ID |
| A-002081 |
Gold Ring disk electrode (3
pcs) |
6 |
4 |
3 |
| A-002082 |
Platinum Ring disk electrode
(3 pcs) |
| A-002083 |
Carbon Ring disk electrode (3
pcs) |
ITO (Indium Tin
Oxide) Electrode
This quite unique material transmits only visible light whereas
it does not transmit UV radiation. Our ITO electrodes consist of 100
nm thick of ITO layer deposited on quartz glass substrate (0.5 mm
thick).
 
| Catalog No. |
Description |
Quantity |
| A-011519 |
SEC-F ITO electrode for flow cell |
4pcs |
| A-011465 |
ITO electrode 8 x 27 mm |
12 pcs |
| Other items |
| A-011827 |
ITO disk (4 inch) |
1 pc |
| A-011233 |
ITO electrode 10x10 mm |
30 pcs |
| A-010887 |
ITO electrode 10x20 mm |
10 pcs |
| A-012128 |
IDA electrode (ITO) 10 µm |
1 pc |
 |
 |
| IDA Intergiditated Array electrode |
ITO electrode |
|
