ISSN: 2456-7663
Peer-reviewed Science Magazine

Breakthrough in ‘Wonder’ Materials For Flexible Tech

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flexible graphene (Representative image )
Dr. Neil Wilson in the Department of Physics has developed a new technique to measure the electronic structures of stacks of two-dimensional materials – flat, atomically thin, highly conductive, and extremely strong materials for the first time.
Multiple stacked layers of 2D materials, known as heterostructures. That create highly efficient optoelectronic devices with ultrafast electrical charge, which can be used in nano-circuits, and are stronger than materials used in traditional circuits.
This is a heterostructure of two-dimensional ‘wonder’ materials. Credit: Gabriel Constantinescu

Various heterostructures have been created using different 2D materials and stacking different combinations of 2D materials creates new materials with new properties.
Dr Wilson’s technique measures the electronic properties of each layer in a stack, allowing researchers to establish the optimal structure for the fastest, most efficient transfer of electrical energy.
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The technique uses the photoelectric effect to directly measure the momentum of electrons within each layer and shows how this changes when the layers are combined.
Solar power could also be revolutionised with heterostructures, as the atomically thin layers allow for strong absorption and efficient power conversion with a minimal amount of photovoltaic material.

Dr Wilson comments on the work,”It is extremely exciting to be able to see, for the first time, how interactions between atomically thin layers change their electronic structure. This work also demonstrates the importance of an international approach to research; we would not have been able to achieve this outcome without our colleagues in the USA and Italy.”

Dr Wilson worked formulated the technique in collaboration with colleagues in the theory groups at the University of Warwick and University of Cambridge, at the University of Washington in Seattle, and the Elettra Light Source, near Trieste in Italy.
Understanding how interactions between the atomic layers change their electronic structure required the help of computational models developed by Dr. Nick Hine, also from Warwick’s Department of Physics.

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