Modification of the Surface Potential of Azobenzene-Containing Langmuir−Blodgett Films in the Near Field of a Scanning Kelvin Microscope Tip by Irradiation

For the first time a light-induced local modification of the surface potential of an azobenzene-containing film in the near field of a scanning force microscope tip has been observed. The modification occurred when the tip was scanned a fixed distance from the surface (in noncontact mode) while simu...

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Published in:Langmuir 2000-06, Vol.16 (13), p.5515-5518
Main Authors: Karageorgiev, P, Stiller, B, Prescher, D, Dietzel, B, Schulz, B, Brehmer, L
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Language:English
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cited_by cdi_FETCH-LOGICAL-a361t-46f52f6547c186f05ffbbbc1023047d6553184fbba4aa780d3498bfab17c6e713
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container_end_page 5518
container_issue 13
container_start_page 5515
container_title Langmuir
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creator Karageorgiev, P
Stiller, B
Prescher, D
Dietzel, B
Schulz, B
Brehmer, L
description For the first time a light-induced local modification of the surface potential of an azobenzene-containing film in the near field of a scanning force microscope tip has been observed. The modification occurred when the tip was scanned a fixed distance from the surface (in noncontact mode) while simultaneously irradiating the sample with light of low intensity. The locally modified regions are detected as areas with more negative surface potential. The smallest size of these areas is several hundred nanometers with a difference in surface potential of a few hundred millivolts. No alterations in topography were observed.
doi_str_mv 10.1021/la991517v
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title Modification of the Surface Potential of Azobenzene-Containing Langmuir−Blodgett Films in the Near Field of a Scanning Kelvin Microscope Tip by Irradiation
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