Amplification of Chiral Light-Matter Interaction Using Bottom-Up 3D Chiral Nanoparticle

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K23594
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 0402:Nano/micro science, applied condensed matter physics, applied physics and engineering, and related fields
• Research Institution: Center for Novel Science Initatives, National Institutes of Natural Sciences
• Principal Investigator: Ahn Hyo-Yong 大学共同利用機関法人自然科学研究機構(新分野創成センター、アストロバイオロジーセンター、生命創成探究, 新分野創成センター, 特任助教 (70844348)
• Project Period (FY): 2019-08-30 – 2021-03-31
• Keywords: chiral / plasmon / nearfield / nanoparticle / biomolecule

Outline of Final Research Achievements

The major purpose of this research project is to develop a method for amplifying chiral light-matter interactions using bottom-up-based 3D chiral nanoparticles as mediators. Conventional chemical synthesis methods have an unavoidable weakness in that it is difficult to spontaneously break mirror symmetry and make chiral structures, and the diversity of structures that can be obtained is limited. This study attempted to overcome these limitations based on the recent advance of chiral nanoparticle synthesis using a chirality transfer mechanism and in-depth analysis on the chirality of the local electromagnetic field of the plasmonic nanostructure. During the research period, we succeeded in 1) investigation a mechanism for the generation of a strong chiroptical signal of the plasmonic helicoid nanoparticle and 2) nanoscale coupling between chiral nanoparticles and molecules.

Free Research Field

Chiral nanomaterial

Academic Significance and Societal Importance of the Research Achievements

私たちの研究は、キラルな光と物質の相互作用を強力に強化できる新しいボトムアップベースのプラットフォームを実証することに成功しました。 この研究は、キラル光と物質の相互作用の基本的な理解に非常に役立つだけでなく、キラルセンシング、偏光選択デバイス、量子通信、 と暗号化。 この研究が将来の医療アプリケーションと情報技術に貢献することを期待しています。