Acoustic Far-Field Hypersonic Surface Wave Detection with Single Plasmonic Nanoantennas
The optical properties of small metallic particles allow us to bridge the gap between the myriad of subdiffraction local phenomena and macroscopic optical elements. The optomechanical coupling between mechanical vibrations of Au nanoparticles and their optical response due to collective electronic o...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v121_n25_p_Berte http://hdl.handle.net/20.500.12110/paper_00319007_v121_n25_p_Berte |
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paper:paper_00319007_v121_n25_p_Berte2023-06-08T14:58:24Z Acoustic Far-Field Hypersonic Surface Wave Detection with Single Plasmonic Nanoantennas Acoustic surface wave devices Acoustic waves Circuit oscillations Gold nanoparticles Metamaterial antennas Nanoantennas Nanoparticles Numerical methods Optical properties Plasmonics Probes Signal detection Surface waves Frequency contents Optical response Orders of magnitude Pump-probe experiments Small metallic particles Sub-diffraction Surface acoustic waves Wave detection Vibrations (mechanical) The optical properties of small metallic particles allow us to bridge the gap between the myriad of subdiffraction local phenomena and macroscopic optical elements. The optomechanical coupling between mechanical vibrations of Au nanoparticles and their optical response due to collective electronic oscillations leads to the emission and the detection of surface acoustic waves (SAWs) by single metallic nanoantennas. We take two Au nanoparticles, one acting as a source and the other as a receptor of SAWs and, even though these antennas are separated by distances orders of magnitude larger than the characteristic subnanometric displacements of vibrations, we probe the frequency content, wave speed, and amplitude decay of SAWs originating from the damping of coherent mechanical modes of the source. Two-color pump-probe experiments and numerical methods reveal the characteristic Rayleigh wave behavior of emitted SAWs, and show that the SAW-induced optical modulation of the receptor antenna allows us to accurately probe the frequency of the source, even when the eigenmodes of source and receptor are detuned. © 2018 American Physical Society. 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v121_n25_p_Berte http://hdl.handle.net/20.500.12110/paper_00319007_v121_n25_p_Berte |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Acoustic surface wave devices Acoustic waves Circuit oscillations Gold nanoparticles Metamaterial antennas Nanoantennas Nanoparticles Numerical methods Optical properties Plasmonics Probes Signal detection Surface waves Frequency contents Optical response Orders of magnitude Pump-probe experiments Small metallic particles Sub-diffraction Surface acoustic waves Wave detection Vibrations (mechanical) |
| spellingShingle |
Acoustic surface wave devices Acoustic waves Circuit oscillations Gold nanoparticles Metamaterial antennas Nanoantennas Nanoparticles Numerical methods Optical properties Plasmonics Probes Signal detection Surface waves Frequency contents Optical response Orders of magnitude Pump-probe experiments Small metallic particles Sub-diffraction Surface acoustic waves Wave detection Vibrations (mechanical) Acoustic Far-Field Hypersonic Surface Wave Detection with Single Plasmonic Nanoantennas |
| topic_facet |
Acoustic surface wave devices Acoustic waves Circuit oscillations Gold nanoparticles Metamaterial antennas Nanoantennas Nanoparticles Numerical methods Optical properties Plasmonics Probes Signal detection Surface waves Frequency contents Optical response Orders of magnitude Pump-probe experiments Small metallic particles Sub-diffraction Surface acoustic waves Wave detection Vibrations (mechanical) |
| description |
The optical properties of small metallic particles allow us to bridge the gap between the myriad of subdiffraction local phenomena and macroscopic optical elements. The optomechanical coupling between mechanical vibrations of Au nanoparticles and their optical response due to collective electronic oscillations leads to the emission and the detection of surface acoustic waves (SAWs) by single metallic nanoantennas. We take two Au nanoparticles, one acting as a source and the other as a receptor of SAWs and, even though these antennas are separated by distances orders of magnitude larger than the characteristic subnanometric displacements of vibrations, we probe the frequency content, wave speed, and amplitude decay of SAWs originating from the damping of coherent mechanical modes of the source. Two-color pump-probe experiments and numerical methods reveal the characteristic Rayleigh wave behavior of emitted SAWs, and show that the SAW-induced optical modulation of the receptor antenna allows us to accurately probe the frequency of the source, even when the eigenmodes of source and receptor are detuned. © 2018 American Physical Society. |
| title |
Acoustic Far-Field Hypersonic Surface Wave Detection with Single Plasmonic Nanoantennas |
| title_short |
Acoustic Far-Field Hypersonic Surface Wave Detection with Single Plasmonic Nanoantennas |
| title_full |
Acoustic Far-Field Hypersonic Surface Wave Detection with Single Plasmonic Nanoantennas |
| title_fullStr |
Acoustic Far-Field Hypersonic Surface Wave Detection with Single Plasmonic Nanoantennas |
| title_full_unstemmed |
Acoustic Far-Field Hypersonic Surface Wave Detection with Single Plasmonic Nanoantennas |
| title_sort |
acoustic far-field hypersonic surface wave detection with single plasmonic nanoantennas |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00319007_v121_n25_p_Berte http://hdl.handle.net/20.500.12110/paper_00319007_v121_n25_p_Berte |
| _version_ |
1768543503734800384 |