Quantitative atomic force microscopy with carbon monoxide terminated tips

Zhixiang Sun, Mark P. Boneschanscher, Ingmar Swart, Daniël Vanmaekelbergh, Peter Liljeroth (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

80 Citations (Scopus)

Abstract

Noncontact atomic force microscopy (AFM) has recently progressed tremendously in achieving atomic resolution imaging through the use of small oscillation amplitudes and well-defined modification of the tip apex. In particular, it has been shown that picking up simple inorganic molecules (such as CO) by the AFM tip leads to a well-defined tip apex and to enhanced image resolution. Here, we use the same approach to study the three-dimensional intermolecular interaction potential between two molecules and focus on the implications of using molecule-modified AFM tips for microscopy and force spectroscopy experiments. The flexibility of the CO at the tip apex complicates the measurement of the intermolecular interaction energy between two CO molecules. Our work establishes the physical limits of measuring intermolecular interactions with scanning probes.

Original languageEnglish
Article number046104
Number of pages4
JournalPhysical Review Letters
Volume106
Issue number4
DOIs
Publication statusPublished - 27 Jan 2011
Externally publishedYes

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