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نجح باحثون فى جامعة الملك عبد الله للعلوم والتكنولوجيا قسم مواد النانو فى تطوير ذاكرة اليكترونية غير قابلة للمسح من مواد عضوية وبلستيكية حيث يمكنهم ذلك من تنفيذ شريحة ار اف اى دى يمكن استخدمها فى العملات السعودية مستقبلا لتفادى محاولات تزيف العملة حيث ستكون بينات العملة مسجلة على الشريحة لحظة تصنيعها ولا يمكن مسح او تعديل هذة المعلومات كمان ان الشريحة تتبع نظام ترقيم تسلسلى اليكترونى يضيف الباحثون فى هذا المجال ان الاستخدام فى العملات سيتطلب لوقت طويل حتى يتوصلوا لافضل شكل نهائى يمكن انتاجة بكميات كبير عن طريق طباعة هذة المواد العضوية. غير ان الباحثوان اثنوا على هذا سيساعد فى تعجيل تطوير تكنولوجيا الالكترونيات المطبوعة والتى من شئنها ان تحدث ثورة فى عالم التكنولوجيا والالكترونيات |
Following on from the successful conclusion of a project to create polymer memory on a banknote, researchers in Saudi Arabia plan to develop a printed RFID prototype.
The new project should take up to three years to complete, according to Husam Alshareef, an associate professor in material science and engineering at King Abdullah University of Science & Technology (KAUST).
Banknotes and security printing provide lots of potential applications for printed electronics. The KAUST project was able to prove that ferroelectric, non-volatile memories fabricated on a substrate as rough as a banknote could perform on par with those made on silicon. For passive RFID applications memories need to be non-volatile to retain data, even when there is no power to operate the device.
To prepare the surface for electrode and active layer deposition a planarising layer of polydimethylsiloxane (PDMS) was applied. The memory layers, which include polymer as opposed to metal electrodes, were fabricated by spin coating.
A future challenge in developing an organic RFID device is making the technology compatible with printing processes, for the device to be reproducible in volume.
Applications
Alshareef says printed RFID for protecting currency is a long way off and envisages other nearer-term applications, such as sensing and smart tags for temperature tracking of certain foods. As the work progresses, KAUST has technology transfer and incubator facilities to support start-ups developing new R&D.
Counterfeiting of banknotes is an ongoing problem for central banks and governments. RFID, especially printed or organic RFID, has been earmarked as a potential traceability technology for applying directly to currency within security printing and production processes. But numerous issues, such as device performance, integrity, durability and scalability mean it will be many years before banknotes use such technology, says Wolfgang Mildner, founder of PolyIC in Germany.
