Abstract
Light interaction with nanoantenna causes induces a group oscillation of free electron on nanoantenna, and results in high-amplitude electric and temperature field near nanoantenna. The enhanced electric field (or hot-spot) has been importantly studied due to the potential in simple accomplishment of nonlinear optical phenomena (i.e. multiple-harmonic generation, two-photon absorption, surface-enhanced Raman scattering). Our proposed 'eagle-beak' nanoantenna also generates strongly focused electric field which enables single-molecule level detection in SERS. Furthermore, the thermal and electric field gradients from eagle-beak nanoantenna are designed to drive target molecules toward hot-spots, and are confirmed with numerical simulations. In experiments, eagle-beak nanoantenna showed highly stable and enhanced Raman scattering measurement with an enhancement factor of 10 14. The reversible preconcentration causing the temporal stability of non-blinking, was verified by time-resolvable SERS spectra and fluorescence-based analysis. This study showing controllability of molecular motion by nanoantenna will expand to various applications of optoelectronics, solar cells and biophotonics.
| Original language | English |
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| Title of host publication | 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 |
| Pages | 156-158 |
| Number of pages | 3 |
| DOIs | |
| State | Published - 2011 |
| Externally published | Yes |
| Event | 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 - Jeju, Korea, Republic of Duration: 18 Oct 2011 → 21 Oct 2011 |
Publication series
| Name | 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 |
|---|
Conference
| Conference | 2011 IEEE Nanotechnology Materials and Devices Conference, NMDC 2011 |
|---|---|
| Country/Territory | Korea, Republic of |
| City | Jeju |
| Period | 18/10/11 → 21/10/11 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
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