Evanescent Wave Based System for Observation of Injected Charge and Field Induced Electrophoresis

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Abstract:

A system using interaction of evanescent light wave with particles in a liquid (such as ink) allows one to observe accumulation and stability of such particles at and in the vicinity of a surface. Particles can be moved either by electric field between electrodes, or by charge injected into the liquid by charge generator. Observation is sensitive only to particles within less than 1 micron of the interface, so observation can be made with an arbitrary thickness of fluid sample. This kind of system is ideal for investigating device life limiting interaction between colorants and substrates in displays. We show that adhesion to electrodes can dominate motion of pigments in display applications.

Document Type: Research Article

Publication date: January 1, 2009

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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