COULOMETRIC NANOCALIPER Russian patent published in 2015 - IPC G01B7/06 B81B1/00 

FIELD: measurement equipment.

SUBSTANCE: coulometric nanocaliper comprises a double-electrode electrolytic cell connected to a source of high-stability current, a source of electrolyte and an instrument that records voltage changes in a circuit of electrodes of an electrolytic cell. The novelty in the coulometric nanocaliper is the fact that the source of electrolyte is equipped with a unit of precision dosing, and the double-electrode electrolytic cell comprising a platinum cathode and an anode, representing a layerwise metal coating of the investigated sample, comprises a unit of capacitance feedback formed by a metal coating of the investigated section and the platinum cathode, data from which makes it possible to form a drop of optimal shape with the help of a device for information reception and processing, comprising a PC, I/O circuit boards and appropriate software, making it possible to also analyse dependence of speed of voltage growth on time during anode oxidation in DC mode for determination of thickness values and interfaces of the layerwise structure in nanometers.

EFFECT: simplified processes of calibration of a coulometric nanocaliper and production of a measurement result of coating thickness.

1 dwg