ABSTRACT
We report the positional control of plasmonic fields and electron emission in a continuous gap antenna structure of sub-micron size. We show experimentally that a nanoscale area of plasmon-enhanced electron emission can be motioned by changing the polarization of an exciting optical beam of 800 nm wavelength. Finite-difference calculations are presented to support the experiments and to show that the plasmon-enhanced electric field distribution of the antenna can be motioned precisely and predictively.
This research was supported by the US-DOE Basic Science Office under Contract No. DE-FG02-13ER46406.
REFERENCES
- 1. S. Zeng, D. Baillargeat, H. P. Ho, and K. T. Yong, “ Nanomaterials enhanced surface plasmon resonance for biological and chemical sensing applications,” Chem. Soc. Rev. 43, 3426 (2014). https://doi.org/10.1039/c3cs60479a, Google ScholarCrossref
- 2. S. Linic, P. Christopher, and D. B. Ingram, “ Plasmonic-metal nanostructures for efficient conversion of solar to chemical energy,” Nat. Mater. 10, 911 (2011). https://doi.org/10.1038/nmat3151, Google ScholarCrossref, ISI
- 3. C. Clavero, “ Plasmon-induced hot-electron generation at nanoparticle/metal-oxide interfaces for photovoltaic and photocatalytic devices,” Nat. Photonics 8, 95 (2014). https://doi.org/10.1038/nphoton.2013.238, Google ScholarCrossref, ISI
- 4. L. Wu and B. M. Reinhard, “ Probing subdiffraction limit separations with plasmon coupling microscopy: Concepts and applications,” Chem. Soc. Rev. 43, 3884 (2014). https://doi.org/10.1039/C3CS60340G, Google ScholarCrossref
- 5. G. Lozano, D. J. Louwers, S. Rodríguez, S. Murai, O. T. Jansen, M. A Verschuuren, and J. G. Rivas, “ Plasmonics for solid-state lighting: enhanced excitation and directional emission of highly efficient light sources,” Light: Sci. Appl. 2, e66 (2013). https://doi.org/10.1038/lsa.2013.22, Google ScholarCrossref
- 6. P. M. Nagel, J. S. Robinson, B. D. Harteneck, T. Pfeifer, M. J. Abel, J. S. Prell, D. M. Neumark, R. A. Kaindl, and S. R. Leone, “ Surface plasmon assisted electron acceleration in photoemission from gold nanopillars,” Chem. Phys. 414, 106 (2013). https://doi.org/10.1016/j.chemphys.2012.03.013, Google ScholarCrossref
- 7. R. Zhang, Y. Zhang, Z. C. Dong, S. Jiang, C. Zhang, L. G. Chen, L. Zhang, Y. Liao, J. Aizpurua, Y. Luo, J. L. Yang, and J. G. Hou, “ Chemical mapping of a single molecule by plasmon-enhanced Raman scattering,” Nature 498, 82 (2013). https://doi.org/10.1038/nature12151, Google ScholarCrossref, ISI
- 8. R. Könenkamp, R. C. Word, J. Fitzgerald, A. Nadarajah, and S. Saliba, “ Controlled spatial switching and routing of surface plasmons in designed single-crystalline gold nanostructures,” Appl. Phys. Lett. 101, 141114 (2012). https://doi.org/10.1063/1.4757125, Google ScholarScitation
- 9. R. Könenkamp, R. C. Word, G. F. Rempfer, T. Dixon, L. Almaraz, and T. Jones, “ 5.4 nm spatial resolution in biological photoemission electron microscopy,” Ultramicroscopy 110, 899 (2010). https://doi.org/10.1016/j.ultramic.2010.04.005, Google ScholarCrossref
- 10. R. C. Word, J. P. S. Fitzgerald, and R. Könenkamp, “ Electron emission in the near-field of surface plasmons,” Surf. Sci. 607, 148 (2013). https://doi.org/10.1016/j.susc.2012.08.026, Google ScholarCrossref
- 11. L. Novotny and N. F. van Hulst, “ Antennas for light,” Nat. Photonics 5, 83 (2011). https://doi.org/10.1038/nphoton.2010.237, Google ScholarCrossref, ISI
- 12. K. Li, M. I. Stockman, and D. J. Bergman, “ Self-similar chain of metal nanospheres as an efficient nanolens,” Phys. Rev. Lett. 91, 227402 (2003). https://doi.org/10.1103/PhysRevLett.91.227402, Google ScholarCrossref
- 13. F. P. Schmidt, H. Ditlbacher, U. Hohenester, A. Hohenau, F. Hofer, and J. R. Krenn, “ Universal dispersion of surface plasmons in flat nanostructures,” Nat. Commun. 5, 3604 (2014). https://doi.org/10.1038/ncomms4604, Google ScholarCrossref
- 14. J. P. S. Fitzgerald, R. C. Word, and R. Könenkamp, “ Subwavelength visualization of light in thin film waveguides with photoelectrons,” Phys. Rev. B 89, 195129 (2014). https://doi.org/10.1103/PhysRevB.89.195129, Google ScholarCrossref
Please Note: The number of views represents the full text views from December 2016 to date. Article views prior to December 2016 are not included.
