Atomic force microscope featuring an integrated optical microscope

Constant A.J. Putman, Bart G. de Grooth, Niek F. van Hulst, Jan Greve

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Abstract

The atomic force microscope (AFM) is used to image the surface of both conductors and nonconductors. Biological specimens constitute a large group of nonconductors. A disadvantage of most AFM's is the fact that relatively large areas of the sample surface have to be scanned to pinpoint a biological specimen (e.g. cell, chromosome) of interest. The AFM presented here features an incorporated optical microscope. Using an XY- stage to move the sample, an object is selected with the aid of the optical microscope and a high-resolution image of the object can be obtained using the AFM. Results o­n chromosomes and cells demonstrate the potential of this instrument. The microscope further enables a direct comparison between optically observed features and topological information obtained from AFM images.
Original languageEnglish
Pages (from-to)1549-1552
Number of pages0
JournalUltramicroscopy
Volume42
Issue number44
DOIs
Publication statusPublished - 1992

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