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

使用氮空位中心金刚石对超材料进行纳米级磁场测量和表征

• 批准号: 16F16066
• 负责人: 田中 拓男
• 金额: $ 1.47万
• 依托单位: Institute of Physical and Chemical Research
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2016
• 资助国家: 日本
• 起止时间: 2016-04-22 至 2018-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16F16066/
• 关键词: 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; メタマテリアル

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.

为了保持扫描探针显微镜在室温下的高稳定性，设计并构建了一种基于扫描隧道显微镜（STM）的紧凑刚性SPM系统。用于照明和检测的新光学器件基于光纤耦合系统，这对于容易对准是有用的。使用具有不同反射比和透射比的分束器来增加检测灵敏度。通过该环境控制室，室温下的3种环境是可能的：（1）环境空气，（2）氮气吹扫，和（3）低真空（~10 Pa）。本工作的意外结果是，使用开发的环境控制SPM系统获得了0.6 nm的亚纳米分辨率，同时进行拉曼实验以测试系统的检测效率。从该结果还可以假设，当探测磁场时也可以观察到针对电场观察到的相同的高分辨率。如此高的分辨率有利于研究纳米级超材料结构，特别是在结构的边缘，光往往会集中在那里并产生热点。

项目成果

Temperature Determination at the Nanoscale via Tip-enhanced THz-Raman Spectroscopy

通过尖端增强太赫兹拉曼光谱测定纳米级温度

• 发表时间: 2016
• 作者: M. Balois N. Hayazawa F. Catalan S. Kawata T. Tanaka T. Yano T. Hayashi

Tip-enhanced THz-Raman spectroscopy: an all-optical method for precise determination and control of local temperature at the nanoscale

尖端增强太赫兹拉曼光谱：一种用于精确测定和控制纳米级局部温度的全光学方法

• 发表时间: 2016
• 作者: 伊藤匡史，岩﨑清隆，井桝浩貴，高野和也，吉本伸之，加藤義治;Maria Balois Norihiko Hayazawa Francesca Celine Catalan Satoshi Kawata Takuo Tanaka Taka-aki Yano Tomohiro Hayashi
• 通讯作者: Maria Balois Norihiko Hayazawa Francesca Celine Catalan Satoshi Kawata Takuo Tanaka Taka-aki Yano Tomohiro Hayashi