Nanoscopic studies investigated by hybrid SNOM/STM
Nanoscopic studies investigated by hybrid SNOM/STM
复制标题
通过混合 SNOM/STM 进行纳米研究
DOI：
10.1016/s0169-4332(98)00858-7
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
W. Knoll
中科院分区：
文献类型：
--
作者：
K. Nakajima;R. Micheletto;K. Mitsui;T. Isoshima;M. Hara;T. Wada;H. Sasabe;W. Knoll
为了提高扫描近场光学显微镜（SNOM）的空间分辨率，我们通过引入具有纳米级孔径的金属涂层光纤尖端，设计了一种照明模式SNOM与扫描隧道显微镜（STM）集成的混合系统。孔径还覆盖有薄金属层，因此孔径的顶部充当 STM 尖端。我们采用了多种材料来展示我们的混合 SNOM/STM 系统作为研究纳米现象的工具的能力。我们提出了 Au(111) 的同步 SNOM/STM 成像，其中 SNOM 图像具有纳米量级的横向分辨率，与 STM 图像相当。还研究了嵌入 MoS2 上液晶氰基联苯分子的偶氮苯染料分子。
In order to improve the spatial resolution in scanning near-field optical microscopy (SNOM), we designed a hybrid system of illumination mode SNOM integrated with scanning tunnelling microscopy (STM) by introducing a metal-coated optical fiber tip with a nanometer-scale aperture. The aperture is also covered with a thin metal layer, thus the top of the aperture acts as an STM tip. We employed several materials to show the capability of our hybrid SNOM/STM system as a tool to investigate nanoscopic phenomena. We present a simultaneous SNOM/STM imaging of Au(111), where the SNOM image has a lateral resolution of the order of nanometers, quite comparable to that of the STM image. An azobenzene dye molecule embedded in liquid crystalline cyanobiphenyl molecules on MoS2was also investigated.