Klaus von Klitzing Max-Planck-Institut fur ¨ Festk¨ orperforschung, Heisenbergstraße 1, 70569 Stuttgart, Germany Already many Cassandras have in advance introduced the tip of the silicon roadmap and but, traditional semiconductor-based transistors were consistently shrinking at a velocity which has introduced us to these days reasonable and strong microelectronics. but it is apparent that the conventional scaling legislation can't be utilized if undesirable tunnel phenomena or ballistic shipping dominate the equipment houses. it's commonly anticipated, mix of silicon CMOS units with molecular constitution will dominate the ?eld of nanoelectronics in twenty years. The visionary rules of atomic- or molecular-scale electronics already date again thirty years yet just recently complicated nanotechnology, together with e.g. scanning tunneling equipment and routinely controllable holiday junctions, have enabled to make certain development during this course. at the point of f- damentalresearch,stateofthearttechniquesallowtomanipulate,imageand probechargetransportthroughuni-molecularsystemsinanincreasinglyc- trolled manner. as a result, molecular electronics is attaining a degree of trustable and reproducible experiments. This has bring about numerous actual and chemical phenomena lately saw for cost currents owing via molecular junctions, posing new demanding situations to idea. therefore a nonetheless expanding n- ber of open questions determines the longer term schedule during this ?eld.
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