Question

20) Discuss the method of single particle tracking and explain, what can be inferred from such measurements.

Please describe the method well so I can understand cause im not good with this topic. Thank you.

Answer 1

Single particle tracking (SPT) is the observation of the motion of individual particles within a medium. The coordinates time series, which can be either in two dimensions (x,y) or in the dimensions (x,y,z) is referred to as a trajectory. The trajectory is typically analysed using statistical methods to extract information about the underlying dynamics of the particle. These dynamics can reveal information about the type of transport being observed (eg: thermal or active), the medium where the particles are moving and interactions with other particles. In the case of random motion, trajectory analysis can be used to measure the diffusion coefficient.

Applications:

In life sciences, single particle tracking is boarding used to quantify the dynamics of molecules.

It is applied to investigate the motion of lipids and proteins within membranes

SPT has been extensively used in the study of reconstituted lipid bilayers.