Contactless read-out of printed memory

Mark Allen*, Mikko Aronniemi, Tomi Mattila, Panu Helistö, Hannu Sipola, Anssi Rautiainen, Jaakko Leppäniemi, Ari Alastalo, Raimo Korhonen, Heikki Seppä

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    7 Citations (Scopus)

    Abstract

    Contactless read-out of inkjet printed programmable memory is demonstrated. The memory is arranged as a conducting comb pattern consisting of parallel lines adjacent to a common electrode. The information content of the memory is stored in memory bits, which modulate the electrical surface-area of the lines. The data is read-out capacitively by sweeping the tip of a printed circuit board over the memory. The memory bits were printed using silver nanoparticle ink and switched from an initial, high-resistance state to a low-resistance state using rapid electrical sintering, and furthermore, from the low-resistance state to an open-circuit state via fuse-like action. This read-out approach offers potential for low-cost memory applications as well as e.g. resistance-change sensors.

    Original languageEnglish
    Pages (from-to)2941-2945
    Number of pages5
    JournalMicroelectronic Engineering
    Volume88
    Issue number9
    DOIs
    Publication statusPublished - Sep 2011
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Contactless read-out
    • Inkjet
    • Nanoparticle ink
    • Non-volatile memory
    • Rapid electrical sintering

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