MULTIMODE SCANNING ION CONDUCTION MICROSCOPE WITH PIEZO-INERTIAL MOVING SYSTEM

A scanning ion conductivity microscope (IDS) has been developed, operating in several modes: DC mode, current modulation mode and hopping mode. It is built with a piezoinertial movement system, nanosonds in the form of glass nanopipettes have been created and tested with an internal radius of r ~ 50 nm. Volt-ampere characteristics I (V) and current dependence on the distance between the probe and the sample I (z) (input/output curves) were measured. Images of a polymer test object with a periodic structure and a biological object (CHO cell) were obtained, their quality was assessed, the features of the SMIP operation in various modes are discussed. Multimode SMIP provides non-destructive non-contact visualization of soft objects in a liquid conducting medium with nanometer spatial resolution in various measuring modes and can be used in biology, cytology, electrochemistry and medicine when studying inorganic soft objects, biological objects in buffer media, etc.