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Open Seminar April 26

Feynman Materials - How can we use atomic building blocks?

Peter Bøggild, Danish Technical University

Graphene is just the first in a giant library of atomic materials with spectacular and often completely different physical properties. Since they can be combined perfectly, it seems almost like a desirable dream for the design of electronics, optics, surfaces, membranes, coatings, energy, sensors and much more that come true. But how can something so thinly be used in practical applications and when can we expect the first applications?

Peter Bøggild will give an overview of the latest developments in two-dimensional materials and how far we are in creating a new generation of supermaterials.

The end of: MAY CONTAIN NUTS - with graphene!

Philipp Braeuninger-Weimer, University of Cambridge

Integrated manufacturing is arguably the most challenging task in the development of graphene based technologies. In particularly with regard to the industrial demand for “electronic-grade” large-area films. In order to control the structure and properties of these materials at the monolayer level, their nucleation, growth and interfacing needs to be understood to a level of unprecedented detail compared to existing thin film or bulk materials. Chemical vapor deposition (CVD) has emerged as the most versatile and promising technique to develop graphene and 2D material films into industrial device materials. In this talk I give my perspective on the key hurdles to overcome to reliably mass manufacture graphene devices. I will show recent progress on scaling up a graphene based bio sensor manufacturing capabilities for allergen detection in food manufacturing lines.

Graphene based broadband photodetectors for food inspections

Bjarke Jørgensen, Newtec Engineering

Today, farmers and food producers optimize production value by sorting products on parameter such as size, surface quality and weight. This approach unfortunately only reveals information on physical properties of the produce, while valuable biochemical information, such as information about sugar-, starch- and amino acid-content, is not taken into account. Hyperspectral imaging in the near- and short wavelength infrared (SWIR) region can reveal this type information [1]. However, existing SWIR imaging sensors are expensive, fragile and provide only relatively low spatial resolution.

Graphene based photodetectors show great promise for such imaging applications.

[1] Kjær, A. et al. Prediction of Starch, Soluble Sugars and Amino Acids in Potatoes (Solanum tuberosum L.) Using Hyperspectral Imaging, Dielectric and LF-NMR Methodologies. Potato Res. 59, 357–374 (2016).

Graphene at SP-Group

Susie-Ann Spiegelhauer, SP-Group

Graphene is the so-called wonder material and it has fantastic properties. These properties make in theory Graphene an attractive component in a variety of composites for many applications. At SP group we are working with Graphene in coating composites and in moulded composites.

We have found that Graphene is not just Graphene and one of the challenges for us is to find the right type of graphene for the right polymer and then to find the right way to distribute the Graphene into the polymer matrix in the necessary amounts….and also to be able to document that the Graphene is evenly distributed.

Another challenge will be documenting that the Graphene is harmless both in producing the parts and in using the parts