Plasmonic nanopatterning of the material surface mediated with gold nanoparticles excited by a femtosecond laser pulse

Yuto Tanaka, Mitsuhiro Terakawa, Minoru Obara, Nikolay Nedyalkov, Petar Atanasov

研究成果: Chapter

2 被引用数 (Scopus)

抄録

We describe a new type of nanohole processing technique mediated with surface plasmon enhanced localized near-field in the vicinity of the gold nanoparticles excited by a femtosecond laser. The numerical analysis of near-field optical properties based on 3D FDTD simulation and experimental results of the processed nanoholes are presented. For the patterning of the various kinds of substrate surface, the near-field enhancement factors and intensity distributions are studied on the different substrates: dielectrics, semiconductors and metals. The experimental results of nanohole ablation validated the simulated results. The field enhancement factors become quite large on semiconductor and metallic substrate due to the large image charge effect, whereas that on dielectric substrate is quite small. The resonant wavelength for the near-field enhancement inside the substrate is significantly shifted from that of the particle in vacuum and it strongly depends on the optical constants of the substrate due to the surface plasmon polaritons nature. The anomalous energy flow such as optical vortex and bifurcation is found to occur around the strongly enhanced area inside the substrate. As for the processing with arrayed nanoparticles, the interparticle distance is a crucial parameter due to the nearfield coupling effect between particles, which governs the magnitude of the field enhancement and the near-field distribution on the substrate surface. This nanohole processing technology is also applied for the nanoablation of glass film deposited on different substrates. The processing properties are strongly dependent on the substrate materials under the film, which reveal the plasmonic coupling effect between the particle and substrate. Finally, we will compare the near-field properties between the gold particle and dielectric particle on the substrates using Mie scattering theory.

本文言語English
ホスト出版物のタイトルGold Nanoparticles
ホスト出版物のサブタイトルProperties, Characterization and Fabrication
出版社Nova Science Publishers, Inc.
ページ173-204
ページ数32
ISBN(印刷版)9781616680091
出版ステータスPublished - 2011 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Materials Science(all)

フィンガープリント 「Plasmonic nanopatterning of the material surface mediated with gold nanoparticles excited by a femtosecond laser pulse」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル