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About: Non-contact atomic force microscopy     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Technique105665146, within Data Space : dbpedia.org associated with source document(s)

Type: yago:WikicatScientificTechniquesyago:Ability105616246yago:Abstraction100002137yago:Attribute100024264yago:Cognition100023271yago:Force105194578yago:Influence105194151yago:Know-how105616786yago:Method105660268yago:Power105190804yago:PsychologicalFeature100023100yago:Quality104723816yago:WikicatIntermolecularForcessingleyago:Technique105665146 New Facet based on Instances of this Class

Non-contact atomic force microscopy (nc-AFM), also known as dynamic force microscopy (DFM), is a mode of atomic force microscopy, which itself is a type of scanning probe microscopy. In nc-AFM a sharp probe is moved close (order of Angstroms) to the surface under study, the probe is then raster scanned across the surface, the image is then constructed from the force interactions during the scan. The probe is connected to a resonator, usually a silicon cantilever or a quartz crystal resonator. During measurements the sensor is driven so that it oscillates. The force interactions are measured either by measuring the change in amplitude of the oscillation at a constant frequency just off resonance (amplitude modulation) or by measuring the change in resonant frequency directly using a feedbac