Eletrização de dielétricos: novas propostas para resolver velhos problemas Electrostatic charging of dielectrics: new approaches to solve persisting problems

• Main Authors: Rubia F. Gouveia, Telma R. D. Ducati, Thiago A. L. Burgo, Camila A. Rezende, Juliana S. Bernardes, Fernando Galembeck
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Química 2010-01-01
• Series: Química Nova
• Subjects: water ion partition; electrostatic charging; Kelvin probe
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422010001000019

<abstract language="eng">Electrostatic phenomena were discovered long ago but their interpretation according to well-established atomic-molecular theory is still lacking. As a result, electrostatic phenomena are often irreproducible and uncontrolled, causing serious practical problems. Highly reproducible recent experimental results on electrostatic charging from this and other laboratories are reviewed in this work, together with a description of the relevant but not so usual Kelvin probe and Faraday cup techniques. These results support a new model for electrostatic charging of dielectrics and insulated metals, based on the role of moist atmosphere as a charge reservoir.