窒素空孔中心ダイヤモンドを用いたメタマテリアルのナノスケール磁場計測と特性評価

2017 Fiscal Year Annual Research Report

• Project/Area Number: 16F16066
• Research Institution: Institute of Physical and Chemical Research
• Principal Investigator: 田中 拓男 国立研究開発法人理化学研究所, 光量子工学研究領域, チームリーダー (40283733)
• Co-Investigator(Kenkyū-buntansha): BALOIS MARIA VANESSA 国立研究開発法人理化学研究所, 光量子工学研究領域, 外国人特別研究員
• Project Period (FY): 2016-04-22 – 2018-03-31
• Keywords: 反射分光法 / 電磁場モデリング / 走査プローブ顕微鏡 / 近接場

Outline of Annual Research Achievements

To maintain high stability of scanning probe microscope in room temperature, a compact and rigid SPM system based on a scanning tunneling microscope (STM) was designed and constructed. The new optics for illumination and detection were based on a fiber coupled system, which is useful for easy alignment. Beam splitters with varying reflectance and transmittance ratios were used to increase detection sensitivity. Through this environment control chamber, 3 kinds of environments in room temperature are possible: (1) ambient air, (2) nitrogen purged, and (3) low-vacuum (~10 Pa). With this multi-environment system, it will be easier to study samples that are sensitive to the local environment.
The unexpected result of this work is attaining subnanometer resolution of 0.6 nm using the developed environment controlled SPM system while conducting Raman experiments to test the detection efficiency of the system. From this result, it can also be assumed that the same high resolution that was observed for the electric field can also be observed when probing the magnetic field. Such high resolution is beneficial in studying nanosized metamaterial structures, especially at the edges of the structures where light tends to concentrate itself and generates hot spots.

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。