Abstract
To verify the possibility of multiple localized surface plasmon resonance based optical recording mechanism, the present study has demonstrated that an Au nanoparticles array deposited with media combined with a ridge-type nanoaperture can amplify the |E|2 intensity of the incident optical light transmitted into the media under specific conditions. Using a numerical Finite-Difference Time-Domain method, we found that the optical intensity amplification first occurred in the near-field region while penetrating the ridge-type nanoaperture, then the second optical amplification phenomenon was induced between the metal nanoparticles, and eventually, the excitation effect was transferred to the inside of the media. In a system consisting of a Gold (Au) NPs deposited media and nanoaperture, various parameters to increase the |E|2 intensity in the near-field region were studied. For an Au nanoparticle size (Cube) = 5 nm × 5 nm × 5 nm, an inter-particle space = 10 nm, and a gap (between nanoaperture and media) = 5 nm, the |E|2 intensity of a ridge-type nanoaperture with an Au nanoparticles array was found to be ~47% higher than the |E|2 intensity of a ridge-type nanoaperture without an Au nanoparticles array.
Funder
National Research Foundation of Korea(NRF) grant funded by the Korea government
Subject
General Materials Science,General Chemical Engineering
Cited by
1 articles.
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