New battery free self generating emergency response tent can provide communications back up power for small devices
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A team of engineers has developed a lightweight “magnetoelastic tent” capable of generating electricity from wind, human movement, and even ambient sound, potentially offering a new way to power small sensors and portable devices without batteries.
The research highlights growing interest in battery‑free micro‑power systems, especially for environmental monitoring, smart infrastructure, and emergency response applications.
The prototype, described by researchers at Nanyang Technological University (NTU) in Singapore, uses ultra‑thin layers of magnetoelastic material that produce electrical current when they bend or vibrate. When assembled into a tent‑like structure, the material can harvest energy from multiple environmental sources simultaneously.
In tests, the tent produced enough electricity to power LEDs, small sensors, and low‑energy electronics, even under weak airflow or low‑frequency vibrations. Researchers say the technology could support wearable devices, remote environmental monitors, and disaster‑zone sensors where conventional power sources are unavailable.
From tents to power generating clothing
The team notes that the tent is waterproof, flexible, and inexpensive, making it suitable for deployment in harsh outdoor conditions. Future versions may be scaled up to support larger networks of sensors or integrated into clothing and equipment for continuous energy harvesting.
According to Physicsworld.com, the next generation of bioelectronics — from wearable sensors to implantable medical devices — depends on finding sustainable ways to power technology directly from the human body. Traditional methods such as piezoelectric and triboelectric systems convert mechanical motion into electricity through compression or friction, but their performance suffers under humidity and limited charge efficiency.
Researchers at the UCLA Samueli School of Engineering, led by Jun Chen, have introduced a breakthrough alternative: a soft magnetoelastic polymer blend that generates electricity when flexed or stretched. Unlike rigid metal alloys that exhibit magnetoelasticity but are far too stiff for biological use, this new material mimics the flexibility of human tissue while maintaining strong magnetic responsiveness.
Their findings, published in Nature Materials, suggest that magnetoelastic polymers could enable self‑powered wearable and implantable devices, combining durability, waterproofing, and adaptability for real‑world biomedical and environmental applications.
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