Theoretical study of optical response of molecules and metallic nanoparticles interacting through atomic layer materials

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K03799
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
• Research Institution: Iwate University
• Principal Investigator: Uryu Seiji 岩手大学, 理工学部, 准教授 (80342757)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: グラフェンナノリボン / プラズモン

Outline of Final Research Achievements

Optical response of molecules and metallic nanoparticles on graphene nanoribbons was theoretically studied. Many kinds of excitons and plasmons of graphene nanoribbons well correspond to those of carbon nanotubes. In a graphene nanoribbon with molecules, molecules can oscillate electric fields near the molecules and mutually enhance their effects on optical response. A gold nanoparticle on a graphene nanoribbon can cause a new plasmon resonance because of enhancement of optical response of the nanoparticle by plasmons of the nanoribbon.

Free Research Field

数物系科学

Academic Significance and Societal Importance of the Research Achievements

物質中のプラズモン共鳴は分光や光エネルギー変換などに広く応用されてきた。本研究におけるグラフェンナノリボンを介した分子の相互作用とグラフェンナノリボン上の金ナノ微粒子による新たなプラズモン共鳴は、従来の分子センシングと光エネルギー変換への応用をさらに向上させる原理になり得ると期待される。また、後者の成果は他のプラズモン共鳴を示す物質にも適用できる可能性があり、更なる展開が期待される。