2021-09-30

Researchers at Chalmers University have created tiny “meta vehicles” powered by light

By yqqlm yqqlm

Researchers at Chalmers University have created tiny “meta vehicles” powered by light </ P >

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p > researchers have shown that unfocused light can be used to manipulate tiny microscopic particles in a precise way</ p>

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p > the scale of the micro vehicle created in the research is 10 microns wide and 1 micron thick, that is, one thousandth of a millimeter. Tiny particles are composed of tiny particles coated with element surface. The meta surface is a very thin arrangement of specially designed and ordered nanoparticles. These small particles are designed to direct light in a specific way</ p>

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p > researchers believe that this breakthrough can be used to improve the components of optical equipment, including now common cameras, microscopes and displays. The tiny elementary particles created by the researchers were placed at the bottom of a water pan. Then a loose laser is used to guide the plane wave of light to the particles</ p>

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p > the research team can control various modes of these vehicles by adjusting the intensity and polarization of light. These subway vehicles are stable enough, and scientists can accurately control them so that they can be used for more complex navigation. The heat generated by light has no effect on moving particles</ p>

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p > researchers can also use meta objects to push small particles in tanks. During the study, these micro objects can push micro polystyrene beads and a yeast particle through water. They can also push a dust particle 15 times the size of the vehicle itself</ p>