Fabrication of chiral plasmonic nanogaps by hot electron-induced metal growth for enhanced enantioselective light-matter interactions

• Project/Area Number: 23K23191
• Project/Area Number (Other): 22H01923 (2022-2023)
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Multi-year Fund (2024); Single-year Grants (2022-2023)
• Section: 一般
• Review Section: Basic Section 28050:Nano/micro-systems-related
• Research Institution: Okinawa Institute of Science and Technology Graduate University (2024); Hokkaido University (2022-2023)
• 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)
• Project Period (FY): 2022-04-01 – 2025-03-31
• Project Status: Granted (Fiscal Year 2024)
• Budget Amount: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000); Fiscal Year 2024: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000); Fiscal Year 2023: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000); Fiscal Year 2022: ¥10,400,000 (Direct Cost: ¥8,000,000、Indirect Cost: ¥2,400,000)
• Keywords: plasmonics / nanogap / chirality / enantioselectivity / hot electron

Outline of Research at the Start

The light-induced growth of gold nanoparticles is investigated to fabricate gold nanostructures with a twisted nanogap. The purpose of this project is the study of the interaction between such twisted gold nanostructures and molecules with twisted shapes. The goal is to induce and measure some asymmetry in this interaction depending on how twisted are the gold nanostructure and the molecules.