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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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.
|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
|Deposited By:||Lesley Tobin|
|Deposited On:||08 Jan 2009 16:51|
|Last Modified:||08 Jan 2009 16:51|
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