Nanorobots propel through the eye

Scientists developed specially coated nanometer-sized vehicles that can be actively moved through dense tissue like the vitreous of the eye. So far, the transport of nano-vehicles has only been demonstrated in model systems or biological fluids, but not in real tissue. The work was published in the journal Science Advances and constitutes one step further towards nanorobots becoming minimally-invasive tools for precisely delivering medicine to where it is needed.

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Over the past 20 years, scientists have been developing metamaterials, or materials that don't occur naturally and whose mechanical properties result from their designed structure rather than their chemical composition. They allow researchers to create materials with specific properties and shapes. Metamaterials are still not widely used in everyday objects, but that could soon change.

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A group of researchers led by Stanislav Evlashin, a senior research scientist at the Skoltech Center for Design, Manufacturing and Materials (CDMM), demonstrated a simple and 100% efficient method of converting silicon wafers into nanoparticles in an aqueous solution. This discovery can help find an environmentally friendly way of silicon recycling without using toxic chemicals.

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