Differential schemes for particle detection

First published:

Last Edited:

Number of edits:

Using the coherence of some light sources, one can use clever illumination and detection schemes to achieve high sensitivity to particle size/refractive index, using just the scattering signal. However, if the background varies over time, its fluctuations can overcome the signal from the detected objects. In some cases, background can be made constant by improving the hardware (i.e. making it more stable over time), but it will never be able to go beyond shot-noise.

References: [@Faez2015Fast, Label-Free Tracking of Single Viruses and Weakly Scattering Nanoparticles in a Nanofluidic Optical Fiber]


Backlinks

These are the other notes that link to this one.

Nothing links here, how did you reach this page then?

Comment

Share your thoughts on this note. Comments are not public, they are messages sent directly to my inbox.
Aquiles Carattino
Aquiles Carattino
This note you are reading is part of my digital garden. Follow the links to learn more, and remember that these notes evolve over time. After all, this website is not a blog.
© 2024 Aquiles Carattino
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License
Privacy Policy