Thermophoretic trapping of single molecules
We recently developed a tool which confines Brownian motion by generating temperature gradients – the actual fuel of Brownian motion – with the help of plasmonic structures. The physical phenomenon behind this trapping principle is known as thermophoresis or Ludwig-Soret effect. We are also able to control the number of particles interacting in our trap using an optical feedback algorithm which allows us to set up completely new types of bio-molecular interaction dynamics assays.
I will present results of a single λ-DNA molecule whose center of mass (COM) was trapped. Continue reading “Talk by T. Thalheim at UL (August 15, 2017)”