Mechanical equilibrium of aggregates of dielectric spheres
Physical Review E, 2018•APS
Industrial as well as natural aggregation of fine particles is believed to be associated with
electrostatics. Yet like charges repel, so it is unclear how similarly treated particles
aggregate. To resolve this apparent contradiction, we analyze conditions necessary to hold
aggregates together with electrostatic forces. We find that aggregates of particles charged
with the same sign can be held together due to dielectric polarization, we evaluate the effect
of aggregate size, and we briefly summarize consequences for practical aggregation.
electrostatics. Yet like charges repel, so it is unclear how similarly treated particles
aggregate. To resolve this apparent contradiction, we analyze conditions necessary to hold
aggregates together with electrostatic forces. We find that aggregates of particles charged
with the same sign can be held together due to dielectric polarization, we evaluate the effect
of aggregate size, and we briefly summarize consequences for practical aggregation.
Industrial as well as natural aggregation of fine particles is believed to be associated with electrostatics. Yet like charges repel, so it is unclear how similarly treated particles aggregate. To resolve this apparent contradiction, we analyze conditions necessary to hold aggregates together with electrostatic forces. We find that aggregates of particles charged with the same sign can be held together due to dielectric polarization, we evaluate the effect of aggregate size, and we briefly summarize consequences for practical aggregation.
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