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Driving Forces for the Triboelectric Charging of Well-Defined Insulating Material Surfaces

Wang, Andrew Eric
http://orcid.org/0000-0002-6249-1955
http://rave.ohiolink.edu/etdc/view?acc_num=case1588612948239934

Abstract Details

2020, Doctor of Philosophy, Case Western Reserve University, Chemical Engineering.
Triboelectric charging and contact electrification are everyday phenomena that both practical uses and potential hazards. Familiarity with the effects can include shocks when touching other surfaces during a dry day, or as the principal mechanism for laser printers. But the less commonly known effects are the influences on dust and sand saltation, industrial hazards through clogging of feed materials and even dust or grain silo explosions, and lightning occurrences during storms and in volcanic plumes. The process can simply be described as: two surfaces come into contact, transfer charge, and upon separation, have a different electrical charge. However, given two different materials, predicting which material surface charges positive, and which charges negative is not always reliable. And, the common understanding of the phenomena cannot explain why the contact of two surfaces of chemically identical composition can even produce a net charge on each other. A fundamental understanding of the mechanisms behind triboelectric charging is still debated. In this dissertation, we report mechanisms that drive triboelectric charging on well-defined insulating surfaces through the use of experiments, simulations, and modeling. Specifically, the effects of chemical composition, strain, and surface roughness were explored by carrying out triboelectric charging experiments with single-crystal surfaces, uniaxially stretched polytetrafluoroethylene (PTFE), and dielectric surfaces of silicon and silica.
Daniel Lacks, PhD (Committee Chair)
Mohan Sankaran, PhD (Committee Member)
John Angus, PhD (Committee Member)
Isaac Greber, PhD (Committee Member)
85 p.
Chemical Engineering
triboelectric charging; tribo-electric charging, contact electrification

Recommended Citations

Citations

  • Wang, A. E. (2020). Driving Forces for the Triboelectric Charging of Well-Defined Insulating Material Surfaces [Doctoral dissertation, Case Western Reserve University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=case1588612948239934

    APA Style (7th edition)

  • Wang, Andrew. Driving Forces for the Triboelectric Charging of Well-Defined Insulating Material Surfaces. 2020. Case Western Reserve University, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=case1588612948239934.

    MLA Style (8th edition)

  • Wang, Andrew. "Driving Forces for the Triboelectric Charging of Well-Defined Insulating Material Surfaces." Doctoral dissertation, Case Western Reserve University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=case1588612948239934

    Chicago Manual of Style (17th edition)

case1588612948239934
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© 2020, all rights reserved.
This open access ETD is published by Case Western Reserve University School of Graduate Studies and OhioLINK.