'A significant threat': These tiny 'trained' robots can catch invisible plastic dust in your drinking water
Researchers at Brno University of Technology have developed tiny magnetic nanorobots that actively seek and capture nanoplastics in water using electrostatic attraction. Unlike passive filtration methods, these robots move through water and bind to plastic particles, which can then be removed with a magnet. While lab tests showed a 78% capture rate in one hour, performance drops significantly in saltwater and groundwater, and the robots degrade after repeated use. Experts remain skeptical about the technology's scalability for real-world water treatment.
- ▪The nanorobots are made from iron-based metal-organic frameworks and use electrostatic attraction to bind to nanoplastics.
- ▪They are magnetically controlled, enabling movement without fuel or light, and can be retrieved with a simple magnet after use.
- ▪In lab tests, moving nanorobots captured 78% of nanoplastics, about 60% more than stationary ones.
- ▪Efficiency drops by 70% in simulated seawater and groundwater due to interference from dissolved ions.
- ▪The robots lose effectiveness after four reuse cycles as their pores become clogged, limiting long-term usability.
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Pro 'A significant threat': These tiny 'trained' robots can catch invisible plastic dust in your drinking water News By Efosa Udinmwen published 28 April 2026 Electrostatic nanorobots chase and capture nanoplastics When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. (Image credit: AzoNano) Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Threads Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Tiny robots actively chase nanoplastics instead of waiting for contactElectrostatic attraction lets nanobots grab plastic-like charged surfacesMagnetic control allows precise movement without fuel or lightThere is a lot of plastic waste in the world,…
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