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Scientists from NIST (National Institute of Standards and Technology) have managed to increase the water-immersed gold nano-rods to 150,000 RPM (150,000 RPM per minute) with a high frequency ultrasound wave, which is almost 10 times faster than the previous record. development of mixing technologies.
Only a few nanometers of rod can be rotated and controlled precisely. In this way, nano-robots given to the body one day can make the drug supplement directly to living cells. In recent years, the nano-engines have become quite small and safe. Now nano engines can be used in many areas. Nanomotor has shown great improvement in recent years. They are both smaller and more stable. These nano-robots can now be powered on different roads. It can be used, for example, by electric, magnetic field, explosion with photons and the latest ultrasound to turn the rods in the water. This makes them very useful for the biological environment.

In previous studies, the rotation and progression of the nanorodes (nano rods) could be controlled by the combination of ultrasound and magnetic fields. In the new study, scientists from NIST managed to convert nano rods to 150,000 rpm even though they were in the water. To measure the speed of the motor, the researchers used 2 micrometers and 300 nanometers of rods. Rods were immersed in water and mixed with polystyrene nanoparticles and placed in a speaker-type shaker. When the mixer was vibrated at a frequency of 3 MHz, in the water filled with polystyrene, the nanoparticles began to form vortices by creating small vortices. Scientists measured the distance of polystyrene particles from nanorodes to measure how quickly the rods rotated. Nano motor sheer speed by controlling the speed of medical applications or substances can be mixed at high speed. Researchers say the control of the bars should be perfect. In spite of everything, the researchers did not fully understand why the engines were turning. NIST is also trying to understand the interactions of the bars around the vortices.

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