Seeing the invisible

by Piotr Sleczkowski

PhD candidate

University of Twente

Visualising objects as small as single molecules had been a scientist’s dream for a few centuries. This dream came true in the 1980s with the development of Scanning Tunneling Microscopy (STM). This image shows star-shaped molecules organised on a gold surface and imaged by STM. The extreme sensitivity of a parameter called tunneling current allows distinguishing between different chemical moieties as a result of their inhomogenous electronic structure. It remains fascinating that we are able to

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