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Kervennic, Y.V. (author), Vanmaekelbergh, D. (author), Kouwenhoven, L.P. (author), Van der Zant, H.S.J. (author)We have developed a technology to reproducibly make gaps with distance control on the single-atom scale. The gold contacts are flat on the nanometer scale and are fabricated on an oxidized aluminum film that serves as a gate. We show that these contacts are clean and can be stabilized via chemical functionalization. Deposition of conjugated...journal article 2003