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Стартап

DateDate: 4-09-2019, 05:50

A group of scientists from Ohio University, the National Laboratory of Argon and their colleagues from France and Japan, created the smallest molecular propeller that can rotate in a given direction due to the energy supplied to it from the outside. In living nature, such propellers set in motion some types of bacteria, they provide the movement of various components inside living cells and do much more. But the creation of such synthetic molecular mechanisms, until recently, has encountered a number of difficulties associated with the detrimental effect of the environment and the inability to ensure precise control and management of such tiny devices.
The molecular propeller consists of three components - the base molecule, the ruthenium atom, which acts as a ball bearing and molecular blades resembling a shuriken with three rays. The dimensions of this tiny propeller are two nanometers wide and one nanometer thick. This propeller begins to rotate when energy comes from an external source. This energy can be the energy of an electric field supplied by the tip of a scanning tunneling microscope. By changing the applied electric potential, you can adjust the speed of rotation of the propeller and stop it completely by removing the electric field.
During the experiments, scientists were able to make a step-by-step recording of the process of rotation of the molecular propeller. This, in turn, gave them the opportunity to better understand the processes that make the molecules and even some of their components move. It was the study of the principles of such molecular motion that was the main goal of research, but it is possible that the created molecular propeller will find application in various technologies, from medicine to nanotechnology.
In conclusion, it should be noted that nano- and molecular machines some time ago became a very “hot” topic of research in the field of nanotechnology. And after the Nobel Prize in chemistry was awarded for the “development and synthesis of molecular machines” in 2016, the interest of scientists in this field has increased many times.