Surface potential of two-component LB film

Topography (left) and surface potential distribution (right) of Langmuir-Blodgett film of mix of two components.
Molecules of both types have the same legth. As a result the components are indistinguishable on topography and only potential image gives the component distribution.

Sample courtesy of I.V. Myagkov and E.A. Kosobrodova, NT-MDT, Moscow, Russia.

surface_potential_of_two-component_lb_film_6x6_
surface_potential_of_two-component_lb_film_6x6_
Surface potential of two-component LB film
Topography (left) and surface potential distribution (right) of Langmuir-Blodgett film of mix of two components.
Molecules of both types have the same legth. As a result the components are indistinguishable on topography and only potential image gives the component distribution.

Sample courtesy of I.V. Myagkov and E.A. Kosobrodova, NT-MDT, Moscow, Russia.
size: 6x6 um
SPM principle: Kelvin Probe Force Microscopy
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