ReadSpot. Is a system developed for the OEA printed electronics competition that took place during the LOPEC 2017 Trade fair and conference, March 2017. The system can identify specific products and read audibly important information such as the expiration date of a medication box. This will be helpful for anyone who has trouble reading, including people with visual impairment that literally have a hard time reading the small print, and tourists that don’t know the local language. This project presents a vision of what can be an excellent use of printed electronics and NFC technology, one that benefits humanity and has a commercial appeal.
NFC tags were prepared by printing antennas with three different innovative methods that enable printing of conductive patterns, and an NFC chip was attached to the antenna, enabling the formation of functional NFC tags. The NFC tags interact with a specially designed smartphone application named ReadSpot. The system was developed by three students from Prof. Magdassi's group in collaboration with a student from computer science school, all from the Hebrew University of Jerusalem.
Method 1: Hydro-printing
A silver NP ink was printed by ink-jetting on a water soluble film and later hydro-printed onto 3D object. The connecting bridge was hydro-printed as well. An NFC chip was attached to the printed antenna with conducive glue, enabling the formation of NFC tag.
Read more about this at: Saada, Gabriel, et al. "Hydroprinting Conductive Patterns onto 3D Structures." Advanced Materials Technologies (2017).
Method 2: Copper salt particle ink
Copper salt particle ink (copper formate) was screen printed, followed by hot-pressing to decompose the copper salt to pure copper. An NFC chip was attached to the printed antenna with conducive glue, enabling the formation of a NFC tag
Read more about this at: Rosen, Yitzchak et al. "Copper interconnections and antennas fabricated by hot-pressing printed copper formate." Flexible and Printed Electronics (2017).
Method 3: Plasma treatment of ink-jetted copper complex ink
Copper complex ink is inkjet printed on plastic substrate followed by plasma treatment. A chip was attached using conductive glue, enabling the formation of a NFC tag.
Read more about this at: Farraj, Y., et al. "Plasma-Induced Decomposition of Copper Complex Ink for the Formation of Highly Conductive Copper Tracks on Heat-Sensitive Substrates." ACS Applied Materials & Interfaces (2017).
The ReadSpot Team:
Isaac (Yitzchak) Rosen
App & Logo Design by Shira Rosen