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Great Potential of Carbon-Based Nanomaterials for Wireless Applications

The growth of the Internet of Things has radically increased the demand for multipurpose wireless sensors. Mitra Akbari’s doctoral dissertation explores novel additive manufacturing methods for fabricating graphene-based passive radio-frequency identification (RFID) on versatile substrates.

Additive manufacturing opens up new horizons in electronic manufacturing and decreases the number of manufacturing steps, end-use cost, and material use. It also enables the use of versatile substrates and novel materials, such as graphene with a unique 2D structure and extraordinary properties.

For her dissertation research, Mitra Akbari deposited graphene inks by means of an inkjet printer, doctor blade, or a 3D printer equipped with a micro-dispenser. 

 “In RFID components, metallic materials are commonly used as main conductive materials. Compared with metallic inks, graphene ink has considerably lower cost and requires lower curing temperature. As a result, different kinds of substrates can be used from flexible polymeric surfaces to green substrates, such as paper, cardboard, fabrics, and plywood,” says TUT Doctoral Student Mitra Akbari.

In her dissertation, Akbari analyzes the wireless performance together with material and electrical characterizations of those graphene-based RFID tags. Although the read range of graphene tags is still less than that of silver and copper ones, it is enough for many short-range applications.

“The graphene-based RFID tags demonstrate acceptable reliability and mechanical durability, and can be used as mechanical and humidity sensors. My research results show that graphene is a cost-effective material with excellent proccesability, and is therefore a good candidate for environmental-friendly wireless platforms,” Akbari says. 

The additive manufacturing of Graphene-based RFIDs and antennas has great potential to be implemented in widespread applications, ranging from wearable electronics to environmental monitoring and parcel tracking.

Public defense of a doctoral dissertation on Friday, 6 October 2017

MSc (Tech) Mitra Akbari’s doctoral dissertation in the field of electronics, entitled “Additive Manufacturing of Graphene for Identification and Sensing Applications”, will be publicly examined at the Faculty of Biomedical Sciences and Engineering of Tampere University of Technology (TUT) in auditorium SA203 in the Sähkotalö building (Korkeakoulunkatu 3, Tampere) at 12:00 on Friday, 6 October 2017. The opponent will be Professor Raimo Sepponen (Aalto University, Finland). Professor Leena Ukkonen from the Faculty of Biomedical Sciences and Engineering (TUT) will act as Chairman.

Mitra Akbari comes from Iran. She started as a master’s student at TUT, majoring in Materials Science. She is currently working in the Wireless Identification and Sensing Systems Research Group.

Further information: Mitra Akbari, tel. +358 45 186 5150, Mitra.Akbari (at) tut.fi

News submitted by: Sanna Kähkönen
Keywords: science and research, biomedical sciences and engineering