SECM470

The HORIBA SECM470 is a scanning electrochemical microscope built on the M470 scanning workstation platform, providing spatial maps of local electrochemical activity across sample surfaces with micrometer-scale resolution. In scanning electrochemical microscopy (SECM), a microelectrode tip — typically an ultramicroelectrode (UME) with a disk diameter of 1–25 µm — is scanned close to the surface while the faradaic current at the tip is recorded as a function of position. The measured current reflects local electrochemical processes at the sample surface: regions of high electrochemical activity generate higher tip currents in the feedback mode, while local concentration gradients of redox species reflect reactive sites, defects, pores in coatings, active enzymatic sites in biological samples, or ion-selective membrane activity. SECM images reveal where on a surface reactions are happening — whether that’s dissolution at a metal grain boundary during corrosion, oxygen reduction at a catalyst active site, or dopamine secretion from a neuron. The SECM470 is configured for operation in feedback mode, generation-collection mode, and potentiometric mode, covering the majority of SECM experimental strategies. The M470’s high-precision stage ensures accurate tip-to-sample distance control, and the integrated potentiostat provides the precise potential control and current resolution required for UME measurements. HORIBA’s SXM software processes position and current data into visual SECM images. NewRoad provides the HORIBA SECM470 in Israel for electrochemistry, corrosion, catalyst characterization, and biophysics laboratories requiring spatially resolved mapping of electrochemical reactivity.