Method device and system for optical near-field scanning microscopy of
test specimens in liquids
    2.
    发明授权
    Method device and system for optical near-field scanning microscopy of test specimens in liquids 失效
    液体试样的光学近场扫描显微镜方法装置和系统

    公开(公告)号:US5838000A

    公开(公告)日:1998-11-17

    申请号:US854168

    申请日:1997-05-09

    摘要: A method, device, and system for optical near-field scanning microscopy on a test specimen in a liquid uses a light source that guides light focused on an optical fiber tip disposed near the test specimen. With the aid of the light beam extending largely parallel to the specimen surface, a diffraction pattern is formed downstream of the light source and the optical fiber tip. The diffraction pattern is detected and a resulting detection signal, which is indicative of a vibrational amplitude of the optical fiber tip, is used for controlling the distance between the optical fiber tip and the specimen, where the distance is related to the vibrational amplitude. Accordingly, optical near-field scanning microscopy may be performed in virtually any liquid, on non-smooth specimen surfaces, and on specimen surfaces whose features change with time.

    摘要翻译: 在液体中的试样上的光学近场扫描显微镜的方法,装置和系统使用引导聚焦在设置在测试样本附近的光纤尖端的光的光源。 借助于大致平行于样品表面延伸的光束,在光源和光纤尖端的下游形成衍射图案。 检测衍射图案,并且将用于指示光纤尖端的振动振幅的结果检测信号用于控制光纤尖端和样本之间的距离,其中该距离与振动振幅相关。 因此,光学近场扫描显微镜可以在几乎任何液体,非平滑的样品表面以及特征随时间变化的样品表面上进行。