Thomas RECORDING electrochemical multi-disc microelectrodes were originally designed for SECM (Scanning ElectroChemical Microscopy), but they are also suitable as working electrodes for other electrochemical applications like voltammetry or amperometry.

The electrodes are based on unique multi metal core fibers (4 or 7 independent metal cores) of platinum/tungsten alloy, insulated with quartz glass.

A special manufacturing process guarantees a highly centered metal core within the glass insulation and a high reproducibility of the RG ratio.

This kind of multi-core-microelectrodes may serve as quasi ring-disk-electrodes with the central core as disk and the surrounding six cores hot-wired as ring electrode

Product Description

Key Features

• Quartz glass insulted multi-metal disc electrode fiber 

• 4- or 7-independent electrode channels 

• Metal is platinum / tungsten-alloy (95%/5%)

• The metal core is always centred within the polished glass cross section 

• Insulation material is quartz glass in contrast to borosilicate glass which is often used. Quartz glass has a lower dielectric constant (app. 3,5…3,8) a higher volume resistivity and a much lower loss factor (quartz glass app. 0.0038, borosilicate glass app. 0.584). As known from patch pipettes, glasses with the lowest loss factor exhibit the lowest electrical noise in the recorded signals. It is a well known fact that quartz glass improves the signal to noise ratio of probes dramatically in contrast to other insulation materials (e.g. borosilicate glass).

• Customization of electrodes is possible. 

Single-Disc Microelectrodes (SDM)

Thomas Single-Disc Microelectrodes (SDM) are available in variable design versions for use in different electrochemical applications (e.g. SECM). Our single-disc microelectrodes for electrochemical applications can be customized to our customer´s needs. So please do not hesitate to aks for your individual electrode design! 

Specifications:

Total length (L1) = 80mm

Length (L2)  =  5mm

Diameter (d1)=2,0mm;

Fiber material: see table below [to be specified by the customer],

Tip shape: B or C depending on chosen Fiber (see table below)

Connector: gold plated pin (see picture on the rigth side)

Minimum order quantity: 5 pieces.   

Standard Connector:

Please select the SDM electrode fiber from the table below: 

Nanodes

Thomas Nanodes are Single-Disc Electrodes with disc diameters in the nanometer range. Electrodes of nanometer sizes are used to study the nanoscale electrochemical properties and processes, which are of fundamental and applied significance in a variety of areas including energy and environmental science, scanning probe microscopies, nanofabrication as well as electrochemistry itself. Thomas RECORDING provides Nanodes with disc diameters of app. 500 nm. These electrodes are customized to our user´s needs. So please do not hesitate to aks for your individual electrode design! 

MDE -Specifications: 

Core material: platinum

Insulation material: glass

Tip shape: C (blunt polished, incl. bulb removal)

Disc diameter (x): 10/50/100/200 µm (please specify)

Electrode dimensions: see drawing (standard)

Article number: AN001874

Single-Microdisc Electrodes (MDE)

Thomas single-MicroDisc Electrodes (MDE) differ from our Single-Disc Microelectrodes (SDM) in that they have a thicker electrode shaft (in the millimeter range) and therefore a different RG ratio than our SDM. This makes them suitable for other applications within electrochemistry. These MDEs can also be customized to customer specifications.

[1] Ufheil, J., Borgwarth, K., Heinze, J., Analytical Chemistry, 2002, 74, 1316-1321

[2] Sklyar, O., Ufheil, J., Heinze, J., Wittstock, G., Electrochimica Acta, 2003, 49, 117-128

[3] Baltes, N., Heinze, J., ChemPhysChem, 2009, 10, 174-179

Selected Publications

Product Information

Electrochemical Electrodes

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