detecting/tracking nano particle [closed]








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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?




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


[**Dynamic light scattering**](https://en.wikipedia.org/wiki/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**](https://en.wikipedia.org/wiki/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](https://web.stanford.edu/group/moerner/sms_trapping.html), for example [*Acc. Chem. Res.*, **2012**, 45 (11), pp 1955–1964](http://doi.org/10.1021/ar200304t)


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