Shapeshifting microrobots can brush and floss teeth

A shapeshifting robotic microswarm may one day act as a toothbrush, rinse, and dental floss in one. The technology, developed by a multidisciplinary team at the University of Pennsylvania, is poised to offer a new and automated ...

A 'greener' way to clean wastewater treatment filters

Membrane filters don't require much energy to purify water, making them popular for wastewater treatment. To keep these materials in tip-top condition, they're commonly cleaned with large amounts of strong chemicals, but ...

Stimulating blood vessel formation with magnetic fields

Magnetic fields can be used to stimulate blood vessel growth, according to a study published in the journal Science and Technology of Advanced Materials. The findings, by researchers at the Tecnico Lisboa and NOVA School ...

Iron chemistry yields surprisingly effective catalyst

As every junkyard vehicle amply shows, iron is prone to rust into iron oxide. But this very reactivity also makes iron and its compounds useful tools for reinventing chemical transformations.

Microrobots clean up radioactive waste

According to some experts, nuclear power holds great promise for meeting the world's growing energy demands without generating greenhouse gases. But scientists need to find a way to remove radioactive isotopes, both from ...

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