# What are the possible ways to measure electrostatic adhesion of particle to a substrate?

I am interested to measure the force of adhesion of micron (1-10 micron) sized particles to conducting and insulating substrates. I searched for literature and found Force spectroscopy and tapping methods are used to measure the adhesion forces. Are there any other methods?

On the downside it's a somewhat indirect measurement, and strictly speaking you're measuring the force at which the particles can roll, though in practice the particles generally detached cleanly. It works best for larger particles. The 10$\mu$m particles will be fine though I can't remember how well it worked at the 1$\mu$m end of your range.