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"Laser-induced thermal expansion of a scanning tunneling microscope tip measured with an atomic force microscope cantilever" R. Huber, M. Koch, J. FeldmannAppl. Phys. Lett., 73, 2521-2523 (1998) Abstract: We investigate the transient thermal expansion of a scanning tunneling microscope tip after excitation with intense femtosecond laser pulses. The expansion dynamics are measured electrically by monitoring the time-resolved tunneling current and mechanically by use of an atomic force microscope. The tip expansion reaches values as high as 15 nm and exceeds the typical working distance of a scanning tunneling microscope by far. This results in a mechanical contact between tunneling tip and surface leading to surface modifications on a nanometer scale. Our findings clarify the mechanism of the recently proposed focusing of laser radiation in the near field of a tip technique [J. Jersch and K. Dickmann, Appl. Phys. Lett. 68, 868 (1996)] for nanostructuring This publication has not been written at BMO BMO authors (in alphabetic order): Robert Huber |
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Letzte Änderung: 2016-09-14 13:34
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