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According to a report by the BBC, Zurich researchers have already shown the "distribution" pictures of the first single molecules, which show a small range of electronic dancing.
Previous researchers have measured the charge on a single atom, but it is obviously more difficult to capture a picture of an electronic dance in a complex molecule. This groundbreaking measurement method will help scientists better understand a series of "charge transfer" processes that are prevalent in nature. The results of this research are published in the journal Nature Nanotechnology, which was developed by the IBM Institute for Research in Zurich on minimal atoms and molecules. The research team also measured the charge of a single atom and obtained the first single-molecule picture. In a sense, this new result is a combination of the two observations.
However, this latest research uses a completely different technology - Kelvin probe microscopy. This microscope is different from the atomic force microscope that obtained the first molecular image in 2009. Because the former needs a small rod with a diameter of one billionth of a meter, and it has only one small molecule at the tip. This rod or cantilever scans the surface of a larger X-shaped molecule, the phthalocyanine, with very little voltage. When the charged tip meets the charge in the turnip, the cantilever will start to sway in a specific way, accurately showing where the molecule is located. By applying a voltage directly to the molecules, two hydrogen atoms in the center of the phthalocyanine can be forced to exchange positions, and the electrons are rearranged to the opposite "X" arm. With the team's technology, they can observe such changes in the distribution of charge.
This approach, combined with more established technologies, will help them better understand the nanoworld. Nanotechnology is not only promoting the development of basic science, but also beneficial for future applications. The first essay author of this study, Fabian-Moyne, said: "Now that we can study the formation of individual chemical bonds of atoms and molecules from a single molecular level, how does the charge on their surfaces redistribute? This is our search for construction. Atomic and molecular level based devices."
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