Spatially-resolved Electrochemical and Materials-based Measurements

Solution Science for Surface and electrochemical analysis

Application Notes and White Papers...

...for Electrochemical and materials scientists

This category will help you to identify which of our product/manufacturer solutions will best meet your Electrochemical and materials imaging requirements.

The surface of an electrode is rarely, if ever, a homogenous surface. It is often incorrectly assumed to be so in order to simplify data interpretation and mathematical modelling. However, a corroding metal will certainly have areas of both anodic and cathodic nature, and a sensor will have areas of varying surface conductivity. The VersaSCAN Scanning Electrochemical Workstation consists of an advanced three-dimensional closed-loop (100 nm resolution) positioning system mounted onto an optical base. Depending on the ancillary equipment mounted onto or connected to this positioning system, the VersaSCAN can provide a breadth of information. As different as each of the techniques is, they have the common goal of providing localized information relative to the sample under investigation.

In general, this is accomplished by using this advanced positioning system to bring a measurement probe to within 10s-100s of microns of the sample’s surface, without actually contacting it. When the measurement probe is within this dimension it only samples the response of the local area, not the entire electrode’s surface. The probe is then rastered across the plane above the sample. This builds a 3-dimensional map – with the X and Y being displacement of the probe and the third axis as the measured parameter (e.g., current in a SECM experiment, voltage-field in a SVP experiment, work function in SKP, etc.).