{"id":678130,"date":"2025-07-01T16:15:29","date_gmt":"2025-07-01T13:15:29","guid":{"rendered":"https:\/\/buradabiliyorum.com\/en\/self-powered-water-sensor-uses-wave-energy-to-detect-pollutants\/"},"modified":"2025-07-01T16:15:29","modified_gmt":"2025-07-01T13:15:29","slug":"self-powered-water-sensor-uses-wave-energy-to-detect-pollutants","status":"publish","type":"post","link":"https:\/\/buradabiliyorum.com\/en\/self-powered-water-sensor-uses-wave-energy-to-detect-pollutants\/","title":{"rendered":"Self-powered water sensor uses wave energy to detect pollutants"},"content":{"rendered":"
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\n A wave-powered environmental sensor continuously monitors water pollutants such as heavy metals, pesticides, and microplastics in real time. Credit: National Taiwan University
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A new self-powered water sensor uses wave energy to monitor pollutants like heavy metals, microplastics, and pesticides\u2014no battery needed.<\/p>\n

Clean water is essential for life\u2014but ensuring it stays clean is a challenge, especially in remote or polluted areas. Researchers have now developed a breakthrough technology<\/a>: a compact, battery-free water monitoring system that runs on the natural motion of waves.<\/p>\n

The innovation integrates two core components. First, a rotational triboelectric nanogenerator (R-TENG) captures energy from water movement, converting it into electricity.<\/p>\n

This harvested energy powers a highly sensitive transistor-based sensor made from AlGaN\/GaN materials, known for their stability and performance under harsh environmental conditions. The study is published<\/a> in Nano Energy<\/i>.<\/p>\n

The sensor can detect a variety of harmful substances\u2014including heavy metals (like lead, arsenic, and chromium), pesticides, and even tiny plastic particles\u2014with remarkable precision.<\/p>\n

Encased in a waterproof acrylic housing and driven by magnets, the device operates continuously underwater, producing a stable voltage even in high humidity. It charges a small capacitor in about 10 seconds, which then fuels the sensor for real-time measurements.<\/p>\n

In lab and river tests, the system demonstrated excellent reliability, distinguishing pollutants down to nanomolar levels and showing a strong linear response to changes in water pH.<\/p>\n

Importantly, this self-powered sensor removes the need for batteries or power cables, which often hinder long-term environmental monitoring. By harvesting wave energy, it enables sustainable, long-duration deployment in oceans, rivers, and lakes\u2014supporting both ecological protection and public health.<\/p>\n

“This compact, self-powered device offers a smart solution for remote water quality monitoring and early pollution detection,” says Prof. Zong-Hong Lin.<\/p>\n

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More information:<\/strong>
\n\t\t\t\t\t\t\t\t\t\t\t\tManish Kumar Sharma et al, Self-powered AlGaN\/GaN HEMT-based sensor integrated with rotational TENG for comprehensive water quality analysis, Nano Energy<\/i> (2025). DOI: 10.1016\/j.nanoen.2024.110637<\/a><\/p>\n<\/p><\/div>\n

\n Provided by
\n National Taiwan University
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\n Citation<\/strong>:
\n No batteries required: Self-powered water sensor uses wave energy to detect pollutants (2025, July 1)
\n retrieved 1 July 2025
\n from https:\/\/techxplore.com\/news<\/a>\/2025-07-batteries-required-powered-sensor-energy.html\n <\/p>\n

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