%0 Journal Article %1 kramer2002optical %A Kramer, Andrei %A Trabesinger, Werner %A Hecht, Bert %A Wild, Urs P. %D 2002 %J Appl. Phys. Lett. %K experiment nano-optics near-field single-molecules %N 9 %P 1652-1654 %R 10.1063/1.1453479 %T Optical near-field enhancement at a metal tip probed by a single fluorophore %V 80 %X The optical near-field in the vicinity of a metal tip is mapped using a single-molecule optical probe. We observe an enhancement of the fluorescence signal by a factor of 5.7±0.3, clearly larger than the fourfold enhancement that can arise from constructive interference if the tip acts as a simple mirror. Considering the tip apex as a nanoparticle of nonregular shape, we suggest that, in the case of gold tips, the enhancement is due to resonant plasmon excitation. Consistently, no enhancement has been observed using Pt/Ir tips.

@article{kramer2002optical, abstract = {The optical near-field in the vicinity of a metal tip is mapped using a single-molecule optical probe. We observe an enhancement of the fluorescence signal by a factor of 5.7±0.3, clearly larger than the fourfold enhancement that can arise from constructive interference if the tip acts as a simple mirror. Considering the tip apex as a nanoparticle of nonregular shape, we suggest that, in the case of gold tips, the enhancement is due to resonant plasmon excitation. Consistently, no enhancement has been observed using Pt/Ir tips.}, added-at = {2020-02-17T11:18:50.000+0100}, author = {Kramer, Andrei and Trabesinger, Werner and Hecht, Bert and Wild, Urs P.}, biburl = {https://www.bibsonomy.org/bibtex/22dfe148278b47850e29688e01341b976/ep5optics}, day = 25, doi = {10.1063/1.1453479}, file = {Kramer et al. - 2002 - Optical near-field enhancement at a metal tip prob.pdf:C\:\\Users\\scherzad\\Zotero\\storage\\8WKDG4K6\\Kramer et al. - 2002 - Optical near-field enhancement at a metal tip prob.pdf:application/pdf;Snapshot:C\:\\Users\\scherzad\\Zotero\\storage\\25RS7PMN\\1.html:text/html}, interhash = {53bef3c5c91f2bd4670923d9638d66c6}, intrahash = {2dfe148278b47850e29688e01341b976}, issn = {0003-6951}, journal = {Appl. Phys. Lett.}, keywords = {experiment nano-optics near-field single-molecules}, month = {02}, number = 9, pages = {1652-1654}, timestamp = {2020-02-17T11:18:50.000+0100}, title = {Optical near-field enhancement at a metal tip probed by a single fluorophore}, urldate = {2020-02-17}, volume = 80, year = 2002 }