A physicist at UK’s Warwick University has developed a new method to measure the electronic structures of stacks of two-dimensional (2D) materials – flat, atomically thin, highly conductive, and extremely strong materials – for the first time.
The ability to understand and quantify how 2D material heterostructures work paves the way for the development of highly efficient nano-circuitry, and smaller, flexible, more wearable electronic devices.
Multiple stacked layers of 2D materials – known as heterostructures – 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.
The technique developed by Dr Neil Wilson 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.
The method uses the photoelectric effect to directly measure the momentum of electrons within each layer and shows how this changes when the layers are combined.
Image credit: Gabriel Constantinescu and Warwick University