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    Terahertz Characterisation of UV Offset Lithographically Printed Electronic-Ink

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    Authors
    Zeng, Yang
    Edwards, Marc R.
    Stevens, Robert
    Bowen, John
    Donnan, Robert S.
    Yang, Bin
    Affiliation
    University of London; National University of Defense Technology; University of Chester; Nottingham Trent University; University of Reading
    Publication Date
    2017-06-10
    
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    Abstract
    Inkjet-printed electronics are showing promising potential in practical applications, but methods for real-time, non-contact monitoring of printing quality are lacking. This work explores Terahertz (THz) sensing as an approach for such monitoring. It is demonstrated that alterations in the localised dielectric characteristics of inkjet-printed electronics can be qualitatively distinguished using quasi-optically-based, sub-THz reflection spectroscopy. Decreased reflection coefficients caused by the sintering process are observed and quantified. Using THz near-field scanning imaging, it is shown that sintering produces a more uniform spatial distribution of permittivity in the printed carbon patterns. Images generated using THz-TDS based imaging are presented, demonstrating the combination of high resolution imaging with quantification of complex permittivities. This work, for the first time, demonstrates the feasibility of quality control in printed electronic-ink with THz sensing, and is of practical significance to the development of in-situ and non-contact commercial-quality characterisation methods for inkjet-printed electronics.
    Citation
    Zeng, Y., Edwards, M., Stevens, R., Bowen, J., Donnan, R. S., & Yang, B. (2017). Terahertz Characterisation of UV Offset Lithographically Printed Electronic-Ink. Organic Electronics, 48, 382-388. https://doi.org/10.1016/j.orgel.2017.06.012
    Publisher
    Elsevier
    Journal
    Organic Electronics
    URI
    http://hdl.handle.net/10034/620779
    DOI
    10.1016/j.orgel.2017.06.012
    Additional Links
    http://www.sciencedirect.com/science/article/pii/S1566119917302690
    Type
    Article
    Language
    en
    EISSN
    1878-5530
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.orgel.2017.06.012
    Scopus Count
    Collections
    Electronic and Electrical Engineering

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