AssetID: 55550757
Headline: ‘Sea creature’ minibot hoovers up oil spills
Caption: Engineers have built a tiny “sea creature” robot that hoovers up oil spills using a filter inspired by sea urchins. Researchers at RMIT University in Australia created the remote-controlled minibot to help tackle one of the world’s most persistent environmental disasters. Oil spills can devastate coastlines and marine ecosystems, killing or injuring wildlife and costing billions of dollars to clean up. To help respond faster and more safely, the team developed a prototype robot called the Electronic Dolphin, designed to skim oil directly from the surface of water. About the size of a sneaker and shaped like a dolphin, the device uses a specially engineered filter that repels water but quickly absorbs oil. That allows the robot to glide across slicks while pulling oil into an onboard collection chamber. Lead researcher Dr Ataur Rahman, from RMIT’s School of Engineering, said the project showed how small robotic platforms could assist clean-up teams without putting people at risk. “Oil spills can take a huge environmental and economic toll. We wanted to create a system that can be deployed quickly, steered accurately and used in areas that are too risky for people to access,” he said. “We have a long-term vision of creating dolphin-sized robots that can vacuum oil, return to base to empty their tanks, recharge, then redeploy automatically – repeating the cycle until the job’s done.” The experimental minibot currently runs for about 15 minutes on its battery, though the researchers say future versions could operate longer depending on pump size and oil storage capacity. “Unlike past oil cleanup materials that often use harsh, hazardous chemicals and work only as fixed filters involving manual operation, our new technology is made using an eco-friendly coating for filter we developed,” Rahman said. Inside the robot, the filter sits at the front while a small pump draws oil through it and into a storage chamber. In lab tests the system collected oil at around two millilitres per minute, with more than 95 per cent purity, while continuing to operate without becoming waterlogged. The secret lies in a microscopic coating inspired by sea urchins. Under an electron microscope the material is covered in tiny spike-like structures that trap pockets of air. These cause water to roll straight off while oil sticks to the surface. Because the material stays lightweight and can be reused many times, researchers say it could be practical for real-world clean-up operations. PhD researcher Surya Kanta Ghadei, who led much of the materials development, said the work was partly inspired by experiences growing up in India. “Growing up in India, I saw the impact oil spills can have on marine life, especially turtles,” he said. “That stayed with me. When I began my PhD, I wanted to create something that could help responders act faster and keep wildlife out of danger.” The team is now exploring ways to scale up the technology by expanding the filter area across the robot’s body, which would require a more powerful pump. Field trials and durability testing are planned as the next stage of development. Rahman said the researchers are keen to collaborate with industry partners to refine the design and explore how the technology could be deployed in real oil spill emergencies.
Keywords: feature,photo feature,photo story,oil spill cleanup, oil spill robot, Electronic Dolphin robot, RMIT University engineers, sea urchin inspired filter, oil absorbing technology, environmental cleanup technology, marine pollution solution, robotic oil skimmer, ocean protection innovation, tech, technology
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