I am new to nano-sized particles and conducting a very simple experiment using nano particles. In my experiment I have nanomagnetic particles inside water and they are moving due to applied magnetic field. I am looking for a method to track or detect the motion of nano particles. Is there any easy way?

  • $\begingroup$ Umm, with your eyes would be simplest... Otherwise there's lots of instrumental methods, but it would depend on particles. $\endgroup$ – Mithoron Dec 24 '17 at 18:35
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    $\begingroup$ One particle? Mass flow?? $\endgroup$ – DrMoishe Pippik Dec 24 '17 at 19:40
  • $\begingroup$ it is superparamagnetic iron oxide nano powder. Actually I want to study morion if a single particle. But if they dont interact for better observation, I can use cluster too.. I dint know that ine can see nano partivles with naked eye. $\endgroup$ – Shiva Dec 25 '17 at 1:53

There are a few ways to do nanoparticle tracking, although I'm not sure they will exactly apply to your system.

Dynamic light scattering or DLS has been used to get the distribution of nanoparticle sizes in solution/suspension over time. Generally, the data gives information on the ensemble, not single-particle tracking.

Nanoparticle tracking analysis or NTA also relies on scattered light, but gives frame-to-frame analysis of each particle's trajectories.

There are other related techniques... Another approach is to create an Anti-Brownian ELectrokinetic (ABEL) trap - to monitor the particle or protein dynamics and apply forces to push it back. This technique was developed by the Moerner lab at Stanford, for example Acc. Chem. Res., 2012, 45 (11), pp 1955–1964


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