海阔凭鱼跃 沈海军的航空与纳米 ...分享 http://blog.sciencenet.cn/u/沈海军 同济大学 教授Email:SHJ@tongji.edu.cn /SHJ@nuaa.edu.cn 版权所有

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纳米塑像

已有 2988 次阅读 2009-8-8 12:21 |个人分类:纳米科技|系统分类:科普集锦|关键词:学者


Nanoportrait

Source:  Igor Fedorov

NT-MDT, Co.

      References:

S Lemeshko, S Gavrilov, V Shevyakov, V Roschin and R Solomatenko "Investigation of tip-induced ultrathin Ti film oxidation kinetics" Nanotechnology 12, 273 (2001).
 

 

Description:

Above is a microscopic portrait (2.3x3.3 µm) of N. W. Timofeeff-Ressovsky, the founder of russian genetics.  The Atomic Force Microscope (AFM) nanolithography image was obtained via the electrical local probe oxidation technique on an ultra-thin titanium film.  In this technique an AFM probe tip (which in viewing mode allows 3-D imaging of nanometer sized surface features) is dragged across the surface and applies a voltage at specific spots.  The voltage induces an oxide growth just under the tip.  This oxide is then viewed and reveals the image that was "grown" such as the one shown above.


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