Visualization of plasmon wave functions by a scanning tunneling electron microscop

在本计画中，我们提出以电子注入激发电浆子，并以扫瞄穿隧电子显微镜观察电浆子波函数。我们在扫描近场光学显微镜的基础上研制了该显微镜。该显微镜在形貌、光学和隧道电子图像中可以实现小于几十nm的空间分辨率。我们发现，一个特性的空间特征是可视化的隧道电子图像的金薄膜。或者，我们可视化等离子体波函数激发在各种纳米结构中使用扫描近场光学显微镜。

In this project, we proposed to excite plasmons by the electron injection and to visualize the plasmon wavefunctions by a scanning tunneling electron microscope. We developed the microscope based on the scanning near-field optical microscope. The microsope can achieve a spatial resolution less than a few tens nm in topography, optical, and tunnel electron images. We found that a characteristic spatial feature was visualized in the tunnel electron image for the gold thin film. Alternatively, we visualize plasmon wavefunctions excited in various nanostructures by using the scanning near-field optical microscope.