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Ultramicroscopy
The atomic force microscope (AFM) is a promising new method for studying the surface structure of both conductors and insulators. In mapping a graphite surface with an insulating stylus, we have achieved a resolution better than 2.5 Å. © 1987 IOP Publishing Ltd.
F.J. Giessibl, G. Binnig
Ultramicroscopy
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Proceedings of the IEEE Micro Electro Mechanical Systems (MEMS)
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Physical Review Letters
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Journal of Applied Physics