Triboelectric and plasma charging of microparticles
Department of Applied Physics, Eindhoven University of Technology - P.O. Box 513, 5600 MB Eindhoven, The Netherlands
Received: 18 May 2016
Accepted: 6 July 2016
The charge on two sets of 100 μm polystyrene particles has been measured using their acceleration in an externally applied electric field. This allows for the measurement of the individual charge on multiple particles at the same time. It is found that particles will charge each other both positively and negatively due to the triboelectric effect. This leads to a broad particle-charge distribution with positive, negative and neutral particles. The particle charge can be largely removed by applying a plasma over the particle containing surface. After plasma charge removal, the particles are triboelectrically recharged when they come into contact with other materials.
PACS: 41.20.Cv – Electrostatics; Poisson and Laplace equations, boundary-value problems / 52.27.Lw – Dusty or complex plasmas; plasma crystals / 52.70.Nc – Particle measurements
© EPLA, 2016