Naphthalocyanine molecule. Kelvin probe force microscopy (KPFM) image of a single naphthalocyanine molecule, recorded with a carbon monoxide (CO)-functionalized tip. Naphthalocyanine is a component in the development of IBM's single-molecule logic switch. KPFM is a non-contact variant of atomic force microscopy. This image was published in 2012. The research was carried out at at IBM Research-Zurich, Switzerland.
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