Japanese scientists have created the world's smallest scissors, but it is not hand-operated and can't be seen with the naked eye. Because it is only as large as a molecule, it must be controlled by light. Researchers say the high-tech scissors can be used to help manipulate genes, proteins and molecules in the body.
According to the "Life Science" website reported on March 25, the scissors are only 3 nanometers long (1 nanometer is equivalent to 1/10 billion meters), only 1% of the wavelength of violet light. Don't look at it small, but it's the same as a normal scissors construction. It also has a central axis, two handles and two blades.
The research team's research report at the American Chemical Society's annual meeting on the 25th pointed out that the center axis of the scissors is like a sandwich. The two carbon plates are sandwiched between a circular iron atom and can rotate freely around the iron atoms. It is a phenyl group formed by hydrocarbons, and the two handles are composed of the organic chemical "phenylene", which is connected by a molecule of a reflective chemical called "azobenzene". When the scissors are irradiated with visible light, the "azobenzene" between the handles is elongated to open the handle and the blade; and when the scissors are irradiated with ultraviolet rays, the handle and the blade are closed due to the shortening of "azobenzene".
According to researcher at the University of Tokyo, Masahiro Sato said that the molecular scissors can hold the molecules like pliers and operate them, such as pulling or turning back and forth. He said: "This achievement is the first example of using molecular instruments to operate other molecules with light, and is an important step toward the future development of molecular robots."
Jin Yuan, another researcher at the University of Tokyo, said that they are now developing slightly larger molecular scissors so that researchers can manipulate them from a distance. With the near-infrared light that penetrates deep into human tissue, this scissors will play an important role in human research and medicine.
According to the "Life Science" website reported on March 25, the scissors are only 3 nanometers long (1 nanometer is equivalent to 1/10 billion meters), only 1% of the wavelength of violet light. Don't look at it small, but it's the same as a normal scissors construction. It also has a central axis, two handles and two blades.
The research team's research report at the American Chemical Society's annual meeting on the 25th pointed out that the center axis of the scissors is like a sandwich. The two carbon plates are sandwiched between a circular iron atom and can rotate freely around the iron atoms. It is a phenyl group formed by hydrocarbons, and the two handles are composed of the organic chemical "phenylene", which is connected by a molecule of a reflective chemical called "azobenzene". When the scissors are irradiated with visible light, the "azobenzene" between the handles is elongated to open the handle and the blade; and when the scissors are irradiated with ultraviolet rays, the handle and the blade are closed due to the shortening of "azobenzene".
According to researcher at the University of Tokyo, Masahiro Sato said that the molecular scissors can hold the molecules like pliers and operate them, such as pulling or turning back and forth. He said: "This achievement is the first example of using molecular instruments to operate other molecules with light, and is an important step toward the future development of molecular robots."
Jin Yuan, another researcher at the University of Tokyo, said that they are now developing slightly larger molecular scissors so that researchers can manipulate them from a distance. With the near-infrared light that penetrates deep into human tissue, this scissors will play an important role in human research and medicine.
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