Nanoparticle tracking

The rapid developments within nanoscience offers opportunities for studies in small scale biology and ecology, since nano-sized (10-9 m) objects are easily carried even by small (mm-scale) organisms without affecting their behavior. Moreover, other advantages with nano-sized tracking systems is that they can be used in aquatic ecosystems (i.e. in water) and that the same method can be applied to both consumer, e.g. zooplankton (mm-scale) and their algal, or even bacterial, food (µm scale).

 

The overall aim with the nano–related research is to be able to track individual animals, as well as their food, in their natural environment. In order to reach this aim we will initially work at laboratory scale and then, as the methodological developments proceed, expand to natural systems.

The Setup

The Setup

In this setup we excite the different Quantum Dots with one source illumination, by focusing the light directly above the tank. Here we used an LED with peak emission at 465 nm. The movement of the animals is recorded via CCD camera and processed in MatLab and ImageJ software.