Berlin 2005 – wissenschaftliches Programm
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CPP: Chemische Physik und Polymerphysik
CPP 15: Special techniques
CPP 15.4: Vortrag
Montag, 7. März 2005, 17:15–17:30, TU C230
Force spectroscopy mapping of soft nano-objects — •V. Dremov1, D. Klinov2, S. Strömsdörfer1, and P. Müller1 — 1Physikalisches Institut III, Universität Erlangen — 2Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, RAS, Moscow, Russia.
We have developed a method of growing diamond-like carbon nonconductive whiskers at the end of standard silicon cantilevers. In addition we were able to produce ultrasharp W, Co, and Ru tips using field emission procedures. The radius of curvature of these probes is less than 1nm. Force spectroscopy mapping was performed using point by point recording the force distance curves. Very high resolution was achieved during investigations of supramolecules as well as DNA molecules adsorbed on mica. We conclude with high resolution measurements of DNA in liquid environments.