Ion transmission through a dielectric hollow tip for scanning probe microscopy

We present a new concept for scanning probe microscopy characterization of molecular microstructures. It is based on a thin capillary using as a sharp tip to probe and map the morphology of a surface. In our experiment a collimated ion beam is formed by tungsten ions passing through a quartz tapered...

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Bibliographic Details
Published in:Micron (Oxford, England : 1993) England : 1993), 2019-01, Vol.116, p.61-65
Main Authors: Mironov, B.N., Aseyev, S.A., Chekalin, S.V.
Format: Article
Language:English
Subjects:
Femtosecond laser radiation
Hollow tip
Photoions
Point-projection microscopy
Scanning probe microscopy
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Summary:We present a new concept for scanning probe microscopy characterization of molecular microstructures. It is based on a thin capillary using as a sharp tip to probe and map the morphology of a surface. In our experiment a collimated ion beam is formed by tungsten ions passing through a quartz tapered capillary with a 100-nm aperture and enters a 2D position-sensitive detector. We demonstrate that such ions are capable of producing the image of a dielectric nanoaperture in the case of low-dose ion beam. Ion transmission through a nanoscale capillary opens the door to observing photodesorption of large organic molecular ions with high spatially-element resolution using the combination of a hollow-tip vacuum scanner with time-of-flight mass spectrometer.
ISSN:0968-4328
1878-4291
DOI:10.1016/j.micron.2018.09.013