Berlin 2005 – wissenschaftliches Programm

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CPP: Chemische Physik und Polymerphysik

CPP 29: POSTER: Polymer physics

CPP 29.32: Poster

Dienstag, 8. März 2005, 16:30–18:30, Poster TU D

The interaction between single colloids with and without grafted DNA as measured by optical tweezers — •Christof Gutsche, Kati Kegler, Mathias Salomo, and Friedrich Kremer — Institute for Experimental Physics I, University of Leipzig, Linnestr. 5, 04103, Leipzig, Germany

Optical tweezers are commonly used to study a wide variety of flow phenomena. With their extraordinary resolution in space ( 2 nm) and force ( 1 pN) they became an irreplaceable tool with a broad spectrum of applications. Within our cooperation we focused our interest on the analysis of the interaction potential between single pairs of colloids. Special emphasis is given to the change of the surrounding medium, but as well the influence of the particle size will be studied.

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