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Reconfigurable Magnetic Liquid Metal Microrobots: A Regenerable Solution for the Capture and Removal of Micro/Nanoplastics
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Scientists developed magnetically controlled liquid metal microrobots that can capture and remove micro- and nanoplastics from water. The tiny robots can change shape, be steered with magnets, and be regenerated for reuse, offering a potential new technology for cleaning plastic pollution from water sources before it reaches people.
Abstract The pervasive presence of micro/nanoplastics in the environment is a significant threat to ecosystems and human health, demanding effective remediation strategies. Traditional methods for extracting these pollutants from water are often inadequate, typically leaving environmentally harmful residues. In response, this work introduces an innovative approach using reconfigurable and regenerable liquid metal microrobots (LiquidBots) that are magnetically driven to actively sequester micro/nanoplastics from aquatic environments. These LiquidBots utilize a coating of gallium oxide for enhanced adhesion and electrostatic interaction to capture over 80% of nanoplastics present in the solution. Additionally, the LiquidBots can be easily regenerated through sonication, which dislodges captured nanoplastics, allowing the microrobots to be reused. This novel technology offers a highly efficient, adaptable, and sustainable solution to combat the micro/nanoplastic pollution crisis.
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Researchers developed self-driven magnetorobots using magnetizable ion-exchange resin spheres that can dynamically remove micro- and nanoplastics from nonmarine waters, overcoming limitations of conventional chemical flocculation and physical filtration methods.
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Researchers developed tiny light-powered magnetic microrobots that can actively seek out and collect microplastics from water, achieving 98% removal efficiency in under two minutes. The microrobots can be guided using magnetic fields and recovered for reuse, making the approach both effective and eco-friendly. This technology could eventually help clean microplastics from water sources before they reach people, though it is still at the laboratory stage.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.