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    Breaking News

    Graphene Innovation in Finland

    VTT Technical Research Center of Finland (VTT) now plays a vital role in the Graphene Flagship.

    Graphene Innovation in Finland
    Printed Electronics Now staff11.19.20
    In Finland, Ph.D. graduates are welcomed to wear a ceremonial top hat and sword for their graduation. 
     
    This unusual tradition is just one of the country’s curious quirks. 
     
    For instance, did you know there are more saunas than cars in Finland? 
     
    What’s also lesser-known, is Finland’s extensive contribution to graphene research through the European project, the Graphene Flagship. 
     
    Starting from the joint interest of Nokia and Finnish research institutes, soon after the experimental discovery of graphene and related materials (GRM) in 2004, VTT Technical Research Center of Finland (VTT) began developing its research in this area and now plays a vital role in the Graphene Flagship.  
     
    VTT provides a shining example of incredible scientific research currently occurring in the Nordics. Headquartered in Espoo, Finland, VTT describes its research center as a ‘sweet spot for innovation’ with a vision to change companies and wider society through new science-based innovations. 
     
    VTT’s interest in graphene sparked from discovering the potential of this new 2D material in sensing applications, and has always had a strong focus on scalable production methods; after attempting to produce wafer-scale monolayer graphene by transfer printing from layered graphite, they established in-house chemical vapor disposition (CVD) in 2010 and began to work with printed GRMs. 
     
    Since then, the center’s interest in graphene has blossomed and paved new opportunities to explore other potential application fields for 2D materials, especially those where VTT already has strong levels of expertise. One of the most important application areas for graphene at VTT are biosensors — devices that measure biological or chemical reactions by quantifying an electrical response. 
     
    Graphene has several advantages to enable the emergence of point of care (POC) and point of application (POA) electrical quantitative biosensors, both for professional use in health care and food industry and for home appliances such as medication feedback and health hacking. The chemical stability and high sensitivity of graphene, together with the easy integration with CMOS — complementary metal-oxide-semiconductor —readout to enable statistics and biological multiplexing, can dramatically improve both the cost structure and the accuracy of the data collected by the biosensors. 
     
    VTT has recently demonstrated CMOS integrated graphene FET biosensor matrices and aims to develop the concept to be applied with their biosensor cloud interface in order to demonstrate its compatibility with home diagnostics. In this area, VTT combines its expertise in material science, IC design, protein- and antibody engineering and biosensor system integration.
     
    The other strong application areas of VTT where CVD graphene and 2D semiconductors are applied are in THz and infrared detectors, hyperspectral imaging, integrated photonics and quantum technologies. VTT also provides graphene integration services for companies and universities in Europe and globally, from the initial device and product development to small- and medium scale production.
     
    The substrate independence of 2D materials has also piqued the interest of VTT researchers working in the field of flexible electronics. The combination of high conductivity graphene with excellent RF performance and 2D semiconductors allowing logic operations, paves the way for large-area sensor multiplexing and future wireless communications on flexible platforms, including body area network (BAN), and at the other end, neuromorphic computing.
     
    Considering these emerging applications, many of the devices need thin-film transistors that are distributed over large areas. The commonly used silicon-based IC chips need to be integrated as separate elements, which is not always the best option, and flexible 3D semiconductors require relatively high-temperature processes. Here VTT aims to develop heterogeneous solutions based on large-area 2D materials, carbon nanotubes and printed metal-oxide materials.
     
    VTT can collaborate with commercial clients from the material development process to production scale-up and system integration, making graphene-enabled flexible electronics a potentially fruitful area for manufacturers in the electronics space. 
     
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