Regensburg 2013 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
BP: Fachverband Biologische Physik
BP 27: Biotechnology and Bioengineering
BP 27.5: Talk
Thursday, March 14, 2013, 11:00–11:15, H43
In-situ electrostatic trapping and manipulation of single nano-objects — •Ji Tae Kim1,2 and Vahid Sandoghdar1,2 — 1Max Planck Institute for the Science of Light, 91058 Erlangen, Germany — 2Friedrich-Alexander University Erlangen-Nürnberg, 91058 Erlangen, Germany
Direct observation of single molecules in their natural environment is essential for fundamental studies. Many sophisticated trapping methods have been developed to counter the randomizing effect of Brownian motion, but stable trapping of small nanoscopic objects still remains a great challenge. A recent breakthrough showed that charged nano-objects could be trapped in geometry-induced electrostatic potentials on prefabricated nanofluidic chips. Here we extend this technique to in-situ electrostatic trapping that exploits the topological modulations produced by a glass nano-capillary. This arrangement allows us to control and manipulate the nanoparticle dynamically at the nanometer scale. We present our results and discuss the prospects of our work for applications in nanobiophysics.