Scanning plasmonic optical fiber tip device for the creation and manipulation of nanoscale electric field spin skyrmion

Research Project

Project/Area Number	25K01643
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Multi-year Fund
Section	一般
Review Section	Basic Section 28050:Nano/micro-systems-related
Research Institution	Okinawa Institute of Science and Technology Graduate University
Principal Investigator	Pin Christophe 沖縄科学技術大学院大学, 量子技術のための光・物質相互作用ユニット, スタッフサイエンティスト (50793767)
Co-Investigator(Kenkyū-buntansha)	TRUONG VietGiang 沖縄科学技術大学院大学, 量子技術のための光・物質相互作用ユニット, シニアスタッフサイエンティスト (00728446)
Project Period (FY)	2025-04-01 – 2028-03-31
Project Status	Granted (Fiscal Year 2025)
Budget Amount *help	¥18,720,000 (Direct Cost: ¥14,400,000、Indirect Cost: ¥4,320,000) Fiscal Year 2027: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000) Fiscal Year 2026: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000) Fiscal Year 2025: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
Keywords	plasmonic nanoantenna / spin angular momentum / skyrmion / optical manipulation / inverse Faraday effect
Outline of Research at the Start	In this project, a plasmonic nanohole antenna will be designed and fabricated by electron- focused-ion-beam milling in a gold thin film first on a glass substrate, then at the tip of a tapered optical fiber. The original antenna design will provide the unique property of allowing a photon carrying a specific spin to excite a nanoscale electric field spin skyrmion pattern. The fabricated antenna will be first used to optically trap and rotate nanoparticles, then to induce and probes nanoscale magneto-optical effects.