Browsing by Subject "Organic molecules in materials science"

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    Control of triboelectric charges on common polymers by photoexcitation of organic dyes
    (Nature Publishing Group, 2019-01) Cezan, S. Doruk; Nalbant, Atakan A.; Büyüktemiz, M.; Dede, Y.; Baytekin, H. Tarık; Baytekin, Bilge
    Triboelectric charging of insulators, also known as contact charging in which electrical charges develop on surfaces upon contact, is a significant problem that is especially critical for various industries such as polymers, pharmaceuticals, electronics, and space. Several methods of tribocharge mitigation exist in practice; however, none can reach the practicality of using light in the process. Here we show a light-controlled manipulation of triboelectric charges on common polymers, in which the tribocharges are mitigated upon illumination with appropriate wavelengths of light in presence of a mediator organic dye. Our method provides spatial and temporal control of mitigation of static charges on common polymer surfaces by a mechanism that involves photoexcitation of organic dyes, which also allows additional control using wavelength. This control over charge mitigation provides a way to manipulate macroscopic objects by tribocharging followed by light-controlled discharging.