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- W2143358558 abstract "To position an autonomous wireless robot (NanoWalker) over a sample's single atom so it can be imaged or manipulated, a scanning tunnelling microscope (STM) is to be mounted on the robot itself. To do so a custom-built positioning system is developed. This requires the use of two sub-systems. The first to provide coarse positioning of the mobile unit in the micrometer range over a sample. To enable sub-micron range positioning of the NanoWalker, a second system is developed. Two different concepts are described. The first regards the usage of a tridimensional binary code to identify a single square. The second uses a variable-width line grid to uniquely characterize every intersection within the working surface. Many materials are considered, and the present work focuses on the results obtained on a highly oriented pyrolytic graphite (HOPG) sample. A preliminary screening of the machining techniques available suggested the use of focused ion beam (FIB); other techniques are also considered. Conclusions are drawn upon STM imaging." @default.
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- W2143358558 date "2004-05-25" @default.
- W2143358558 modified "2023-09-25" @default.
- W2143358558 title "Nanoscale grid based positioning system for miniature instrumented robots" @default.
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- W2143358558 doi "https://doi.org/10.1109/ccece.2003.1226267" @default.
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