Imura, Kohei and Okamoto, Hiromi and Hossain, Mohammad K. and Kitajima, Masahiro (2006) Visualization of localized intense optical fields in single gold-nanoparticle assemblies and ultrasensitive Raman active sites. NANO LETTERS, 6 (10). pp. 2173-2176. ISSN 1530-6984
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Abstract
We demonstrate visualization of localized intense electromagnetic fields in real space in well-tailored dimeric and trimeric gold nanospheres by using near-field optical techniques. With two-photon induced luminescence and Raman measurements, we show that the electric field is confined at an interstitial site in the aggregate. We also demonstrate optical switching operations for the electric-field localized sites in the trimer structure.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Colloidal suspension ; Aggregate ; SERS ; Electromagnetic fields ; Transition elements ; Trimer ; Switching ; Interstitials ; Experimental study ; Electric field effects ; Luminescence ; Nanosphere ; Topography ; Nanostructured materials ; Nanoparticles ; Gold ; |
| Subjects: | Analytical Science > Microscopy and probe methods Physical Science > Photonics |
| ID Code: | 2772 |
| Deposited By: | Lesley Tobin |
| Deposited On: | 08 Jan 2009 16:51 |
| Last Modified: | 08 Jan 2009 16:51 |
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