The most important development in the field of techniques of using tools in nanotechnology, is how to Dip- pen Nanolithography or DPN which was invented in the year. Ad1999 by Chad mirgin, Professor of chemistry and the Institute of nanotechnology, University of north western United States. Which generated from the inspiration of the quill used in the past, by the way, DPNAFM a pen for writing on the surface of the object. Using a single atom of any element element one water ink. (which is the dimension of the size ink with nanometer scale). To create a structure of nano level up.
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