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Linking the Chemistry and Physics of Electronic Charge Transfer in Insulators: Theory and Experiment

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The surface states model is successful in predicting many salient features of charge transfer in insulative materials, which is critical to electrophotography. This paper will discuss how the surface chemistry controls the physics, the chemical potentials, and how it fits the surface states model. The interrelationship of acid-base Ka/Kb values of the materials in contact, measured by IGC (inverse gas chromatography), the HOMO (highest occupied molecular orbitals) and LUMO (lowest unoccupied molecular orbitals) and their excited states calculated using DFT (density functional theory) quantum mechanical modeling, the chemical potentials measured by the Kelvin method, and triboelectric charging data are studied. It will be shown that a precursor complex of the contacting materials, prior to the charge transfer event, can be calculated by DFT to predict both qualitatively and quantitatively triboelectric charging. The work focuses on PTFE, Kynar and PMMA polymers, as well as silica, titania and alumina.
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Document Type: Research Article

Publication date: 01 January 2012

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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