According to the physicist organization network reported on October 24th, recently, a research team of the Charles Sutton Institute of the French National Academy of Sciences (CNRS) assembled thousands of nano-machines together to produce coordinated contraction like muscle fibers The diastolic movement extends the distance by about 10 microns. Related papers are published on the website of Applied Chemistry.
The “nanomachines†created by nature are biomolecules composed of extremely complex proteins that participate in the basic life functions of organisms, such as transporting ions, synthesizing ATP (energy molecules), and cell division. Our muscle movement is also controlled by the coordinated movement of thousands of these protein machines. The range of action of a protein machine is only about 1 nanometer. However, when thousands of these tiny actions are combined, the telescoping movement is amplified and can perfectly coordinate various sports behaviors.
Over the past few years, synthetic chemists have made dazzling progress in the field of artificial nanomachines, and more and more research has begun to turn to their mechanical properties, but how to make many nanomachines coordinate in time and space has not yet been achieved. solve.
Now, for the first time, a research team led by Nicholas Giusepponi, a professor at the University of Strasbourg in France, has successfully synthesized a long polymer chain that combines thousands of nanomachines through supramolecular bonds. Nano-machines can produce linear stretching movements of about 1 nanometer. Under the influence of pH, their simulated movement can cause the entire polymer chain to contract or relax by 10 microns, so various movements are correspondingly amplified 10,000 times, just like in muscle tissue.
The Laboratory of Materials and Complex Systems at the University of Diderot in Paris used biometric methods to accurately measure this nano-polymer chain.
The researchers pointed out that this achievement will open up broad prospects for many application fields, such as micro-robots, nano-information storage, artificial muscles, etc. These assembleable nano-machines can also be used to design other materials with novel mechanical properties.
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