A solar nanomotor

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Chemists from the University of Bologna, in collaboration with researchers from the University of California have developed Sunny, clean nanoscale motor that works with sunlight. This system, which converts solar energy into mechanical energy, is composed of two molecules, one ring-shaped, which slides along an axis of six nanometers formed by the second molecule. When a photon hits the ring, it changes shape and moves along the axis by transferring an electron. The displacement of this "molecular piston" is reversed thanks to the energy provided by another photon. The cycle of this motor is carried out in less than a thousandth of a second, equivalent to 60 000 rev / min for a combustion engine.
To exploit the mechanical power generated by this device on the macroscopic scale, scientists are trying to synchronize the operation of such nanomotors million. Another application of this system is to build the memory of a "chemical computer", the conductivity of the ring-shaped molecule being modified by incidants photons.

Source: ADIT


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