In this case, the resulting tree is about 14 centimeters in length. Since it is made of graphene, it only contains carbon atoms in one layer. The tree is cut from a 10 meter long graphene roll, carried in one piece, and then scanned with terahertz radiation.
Scientists have called it the world’s thinnest Christmas tree. But the Christmas joke hides an important breakthrough. For the first time, the researchers managed to make an inline quality control of the graphene layer during its transfer. This is the key to obtaining stable, reproducible and usable material properties, which is a prerequisite for the use of graphene, for example, in electronic circuits.