Atomic Force Microscopy
AimsBefore you startIntroductionTip Surface InteractionModes of OperationThe ScannerTip and CantileverFeedbackScanner Related ArtefactsTip Related ArtefactsOther ArtefactsSummaryQuestionsGoing furtherTLP creditsTLP contentsShow all contentViewing and downloading resourcesAbout the TLPsTerms of useFeedbackCredits Print this page
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The Scanner
The scanner moves the probe over the sample (or the sample under the probe) and must be able to control the position extremely accurately. In most AFMs piezoelectric materials are used to achieve this. These change dimensions with an applied voltage. The diagram below shows a typical scanner arrangement, with a hollow tube of piezoelectric material and the controlling electrodes attached to the surface.