Tips for long life: A long-term stable polymer coating of AFM tips (see graphic) can be achieved by the use of a mixed self-assembled monolayer of alkanethiols. More than 10 000 force–extension curves under various environmental conditions, for example, different substrates, can be recorded without any hint of degradation. Thus the results can be better compared, as deviations arising from different sample preparations are ruled out.
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Friedsam et al. (2004) studied this question.
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