An insight into the behaviour and properties of stacks of two-dimensional materials could improve the function of a new generation of electronic devices
One of the most interesting areas of research into two-dimensional materials is how they behave when they are stacked together.
Many of these have unusual properties to do with the way electrons behave on their surfaces, and these properties become especially interesting when different materials are stacked together face-to-face.
However, the properties of these devices depends on the junction between two materials being clean. It had been assumed in the early days of heterostructure research that most materials in this class exhibit a self-cleaning phenomenon; when they are put into contact, any impurities, such as atoms and molecules in the air, are simply squeezed out. But new research at Manchester University suggests that this is not the case.
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Source: The Engineer