Supramolecular Rotor and Translator at Work: On-Surface Movement of Single Atoms

Supramolecular Rotor and Translator at Work: On-Surface Movement of Single Atoms. Ohmann, R., Meyer, J., Nickel, A., Echeverria, J., Grisolia, M., Joachim, C., Moresco, F., & Cuniberti, G. ACS Nano, 9(8):8394–8400, August, 2015.

Paper doi abstract bibtex

A supramolecular nanostructure composed of four 4-acetylbiphenyl molecules and self-assembled on Au (111) was loaded with single Au adatoms and studied by scanning tunneling microscopy at low temperature. By applying voltage pulses to the supramolecular structure, the loaded Au atoms can be rotated and translated in a controlled manner. The manipulation of the gold adatoms is driven neither by mechanical interaction nor by direct electronic excitation. At the electronic resonance and driven by the tunneling current intensity, the supramolecular nanostructure performs a small amount of work of about 8 Â 10À21 J, while transporting the single Au atom from one adsorption site to the next. Using the measured average excitation time necessary to induce the movement, we determine the mechanical motive power of the device, yielding about 3 Â 10À21 W.

@article{ohmann_supramolecular_2015,
	title = {Supramolecular {Rotor} and {Translator} at {Work}: {On}-{Surface} {Movement} of {Single} {Atoms}},
	volume = {9},
	issn = {1936-0851, 1936-086X},
	shorttitle = {Supramolecular {Rotor} and {Translator} at {Work}},
	url = {http://pubs.acs.org/doi/10.1021/acsnano.5b03131},
	doi = {10.1021/acsnano.5b03131},
	abstract = {A supramolecular nanostructure composed of four 4-acetylbiphenyl molecules and self-assembled on Au (111) was loaded with single Au adatoms and studied by scanning tunneling microscopy at low temperature. By applying voltage pulses to the supramolecular structure, the loaded Au atoms can be rotated and translated in a controlled manner. The manipulation of the gold adatoms is driven neither by mechanical interaction nor by direct electronic excitation. At the electronic resonance and driven by the tunneling current intensity, the supramolecular nanostructure performs a small amount of work of about 8 Â 10À21 J, while transporting the single Au atom from one adsorption site to the next. Using the measured average excitation time necessary to induce the movement, we determine the mechanical motive power of the device, yielding about 3 Â 10À21 W.},
	language = {en},
	number = {8},
	urldate = {2018-12-10},
	journal = {ACS Nano},
	author = {Ohmann, Robin and Meyer, Jörg and Nickel, Anja and Echeverria, Jorge and Grisolia, Maricarmen and Joachim, Christian and Moresco, Francesca and Cuniberti, Gianaurelio},
	month = aug,
	year = {2015},
	pages = {8394--8400},
}

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