Wei, DL, Dickinson, MR, Smith, N et al. (1 more author) (2016) Understanding local forces in electrophoretic ink systems: utilizing optical tweezers to explore electrophoretic display devices. In: Proceedings of SPIE. SPIE Optical Trapping and Optical Micromanipulation XIII, 28 Aug - 01 Sep 2016, San Diego, California, United States. Society of Photo-optical Instrumentation Engineers
Abstract
Optical tweezers can be used as a valuable tool to characterize electrophoretic display (EPD) systems. EPDs are ubiquitous with e-readers and are becoming a commonplace technology where reflective, low-power displays are required; yet the physics of some features crucial to their operation remains poorly defined. We utilize optical tweezers as a tool to understand the motion of charged ink particles within the devices and show that the response of optically trapped electrophoretic particles can be used to characterize electric fields within these devices. This technique for mapping the force can be compared to simulations of the electric field in our devices, thus demonstrating that the electric field itself is the sole governor of the particle motion in an individual-particle regime. By studying the individual-particle response to the electric field, we can then begin to characterize particle motion in ‘real’ systems with many particles. Combining optical tweezing with particle tracking techniques, we can investigate deviations in many particle systems from the single-particle case.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016, Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Optical tweezing; electrophoretic display; electrophoresis; electronic ink; electric field |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Soft Matter Physics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 11 Oct 2016 11:15 |
Last Modified: | 14 Oct 2016 13:09 |
Published Version: | http://dx.doi.org/10.1117/12.2237675 |
Status: | Published |
Publisher: | Society of Photo-optical Instrumentation Engineers |
Identification Number: | 10.1117/12.2237675 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:105756 |