The Einstein Year 2005 marks the centenary of Einstein’s three publications which changed the way we understand our world. His paper about the photoelectric effect, which formed the basis for his Nobel Prize in Physics 1921, was the starting point for discussions about the wave-particle duality in nature and the development of quantum mechanics.

Today, nanoelectronics is the ideal playground to investigate and to apply in a controlled way quantum phenomena and the talk will discuss some examples where both the particle and wave nature of electrons play an important role in quantum structures.