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

为了保持扫描探针显微镜在室温下的高稳定性，设计并搭建了一种基于扫描隧道显微镜(STM)的紧凑型刚性扫描隧道显微镜系统。新的照明和探测光学系统是基于光纤耦合系统的，这有助于轻松对准。采用不同反射比和透射比的分束器来提高探测灵敏度。通过这个环境控制室，可以实现3种室温环境：(1)环境空气，(2)氮气吹扫，(3)低真空(~10Pa.这项工作意想不到的结果是，利用开发的环境控制SPM系统，在进行拉曼实验测试该系统的检测效率时，达到了0.6 nm的亚纳米分辨率。根据这一结果，还可以假设，当探测磁场时，也可以观察到电场的高分辨率。如此高的分辨率有利于研究纳米超材料结构，特别是在光趋于集中并产生热点的结构边缘。

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.