Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Nanoscale Wetting and De-Wetting of Lubricants with Scanning Polarization Force Microscopy
Abstract We present the technique of scanning polarization force microscopy (SPFM), which is based on the use of electrostatic forces in an atomic force microscope. Although, traditionally, electrostatic forces have been used only for imaging of electrically conductive substrates (metal and doped semiconductors), it can be used on insulating materials as well. This is because the electric field at the sharp tip of a conductive AFM cantilever (biased relative to a remote ground) is strong and polarizes the substrate to create an image charge that depends on the local dielectric properties. We will show applications of SPFM to studies of wetting and spreading of various liquids, in particular, the lubricants used in computer hard disks.
Nanoscale Wetting and De-Wetting of Lubricants with Scanning Polarization Force Microscopy
Abstract We present the technique of scanning polarization force microscopy (SPFM), which is based on the use of electrostatic forces in an atomic force microscope. Although, traditionally, electrostatic forces have been used only for imaging of electrically conductive substrates (metal and doped semiconductors), it can be used on insulating materials as well. This is because the electric field at the sharp tip of a conductive AFM cantilever (biased relative to a remote ground) is strong and polarizes the substrate to create an image charge that depends on the local dielectric properties. We will show applications of SPFM to studies of wetting and spreading of various liquids, in particular, the lubricants used in computer hard disks.
Nanoscale Wetting and De-Wetting of Lubricants with Scanning Polarization Force Microscopy
Salmeron, Miquel (Autor:in)
01.01.2001
12 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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