| Jahr | 2012 |
| Autor(en) | Jörg Bochterle, Frank Neubrech, Tadaaki Nagao, Annemarie Pucci |
| Titel | Angstrom-Scale Distance Dependence of Antenna-Enhanced Vibrational Signals |
| KIP-Nummer | HD-KIP 12-81 |
| KIP-Gruppe(n) | F6 |
| Dokumentart | Paper |
| Keywords (angezeigt) | local near-field; quantum plasmonics; gold antennas; cold-condensed carbon monoxide; SEIRS |
| Quelle | ACS Nano, 6 (2012) 10917-10923 |
| doi | http://dx.doi.org/10.1021/nn304341c |
| Abstract (en) | The resonantly enhanced near-field of micrometer-sized gold antennas has been probed with Angstrom-scale resolution. In situ surface-enhanced infrared spectroscopic vibrational signals of carbon monoxide (CO) layers cold-condensed on the antennas in ultrahigh-vacuum conditions are compared to the signals of CO layers with corresponding thicknesses on a flat gold surface. Vibrational signals of CO as well as the shift of the plasmonic resonance frequency were used to analyze the distance dependence of the near-field. The signal enhancement induced by the antennas not only decays monotonically from the surface but, in contrast to classical near-field models, shows a maximum between 10 and 15 Å and decays also toward the surface of the antenna. This effect is attributed to the spill-out of the electron wave function, as expected from quantum mechanical calculations. |
| bibtex | @article{Bochterle2012,
author = {Bochterle, J\"{o}rg and Neubrech, Frank and Nagao, Tadaaki and Pucci, Annemarie},
title = {Angstrom-Scale Distance Dependence of Antenna-Enhanced Vibrational Signals},
journal = {ACS Nano},
year = {2012},
volume = {6},
number = {12},
pages = {10917-10923},
doi = {10.1021/nn304341c},
url = {http://pubs.acs.org/doi/abs/10.1021/nn304341c}
} |
| URL | http://dx.doi.org/10.1021/nn304341c |
