Fabrication of Symmetry Breaking Structured Plasmonic Nanoshell and Their Optical Device Applications

2016 Fiscal Year Final Research Report

• Project/Area Number: 26706004
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Nanomaterials chemistry
• Research Institution: Shinshu University
• Principal Investigator: ZETTSU Nobuyuki 信州大学, 学術研究院工学系, 准教授 (10432519)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 局在表面プラズモン / センサー / 自己組織化 / ナノ粒子 / プラズマ / エッチング

Outline of Final Research Achievements

In this study, we focused on the development of ultra-sensitive localized surface plasmon sensors based on the use of multipole plasmon modes generated in symmetry-broken structured plasminic nanoshells. By using dielectric materials as an etching mask in plasma processing of PS nanoparticle arrays, we developed a new method to fabricate a plasmonic nanoshell array with "symmetry breaking structure" that disrupted shape symmetry of spherical nanoparticles. We demonstrated designed asymmetric structures optimized from electromagnetic field calculation, leading designing light enhancement electric field profile. We realized world's highest sensitivity sensor showing dielectric constant response of 2000 nm / RIU in response to near infrared light.

Free Research Field

コロイド・界面科学，材料科学，固体化学