Direct determination of the energy required to operate a single molecule switch

Loppacher, C. and Guggisberg, M. and Pfeiffer, O. and Meyer, E. and Bammerlin, M. and Luthi, R. and Schlittler, R. and Gimzewski, J. K. and Tang, H. and Joachim, C.. (2003) Direct determination of the energy required to operate a single molecule switch. Physical review letters, Vol. 90, H. 6 , 066107, 4 S..

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Official URL: http://edoc.unibas.ch/dok/A5262132

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Using a noncontact atomic-force and scanning-tunneling microscope in ultrahigh vacuum, we have measured the switching energy of a single molecule switch based on the rotation of a di-butyl-phenyl leg in a Cu-tetra-3,5 di-tertiary-butyl-phenyl porphyrin. The mechanics and intramolecular conformation of the switched leg is controlled by the tip apex of the noncontact atomic-force microscope. The comparison between experimental and calculated force curves shows that the rotation of the leg requires an energy less than 100x10(-21) J, which is 4 orders of magnitude lower than state-of-the-art transistors.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Nanomechanik (Meyer)
UniBasel Contributors:Meyer, Ernst
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:53

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