{"id":196704,"date":"2025-06-12T18:42:06","date_gmt":"2025-06-12T09:42:06","guid":{"rendered":"http:\/\/ee.presscat.kr\/?post_type=research-achieve&p=196704"},"modified":"2026-04-13T05:38:55","modified_gmt":"2026-04-12T20:38:55","slug":"ee-prof-kyeongha-kwons-team-succeeds-in-real-time-carbon-dioxide-monitoring-without-batteries-or-external-power","status":"publish","type":"research-achieve","link":"http:\/\/ee.presscat.kr\/en\/research-achieve\/ee-prof-kyeongha-kwons-team-succeeds-in-real-time-carbon-dioxide-monitoring-without-batteries-or-external-power\/","title":{"rendered":"EE Prof. Kyeongha Kwon’s Team Succeeds in Real-Time Carbon Dioxide Monitoring Without Batteries or External Power"},"content":{"rendered":"
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< (From left) Master’s Student Gyurim Jang, Professor Kyeongha Kwon ><\/span><\/figcaption><\/figure>\n
EE research team led by Professor Kyeongha Kwon from the School of Electrical Engineering, in a joint study with Professor Hanjun Ryu’s team at Chung-Ang University, has developed a self-powered wireless carbon dioxide (CO\u2082) monitoring system. This innovative system harvests fine vibrational energy from its surroundings to periodically measure CO\u2082 concentrations.<\/span><\/div>\n
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This breakthrough addresses a critical need in environmental monitoring: accurately understanding “how much”\u00a0CO2\u00a0is being emitted to combat climate change and global warming. While CO2\u00a0monitoring technology is key to this, existing systems largely rely on batteries or wired power system, imposing limitations on installation and maintenance. The KAIST team tackled this by creating a self-powered wireless system that operates without external power.<\/span><\/div>\n
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The core of this new system is an “Inertia-driven Triboelectric Nanogenerator (TENG)” that converts vibrations (with amplitudes ranging from 20-4000 \u339b and frequencies from 0-300 Hz) generated by industrial equipment or pipelines into electricity. This enables periodic\u00a0CO2\u00a0concentration measurements and wireless transmission without the need for batteries.<\/span><\/div>\n

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< Figure 1. Concept and configuration of self-powered wireless CO2 monitoring system using fine vibration harvesting (a) System block diagram (b) Photo of fabricated system prototype ><\/span><\/figcaption><\/figure>\n

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The research team successfully amplified fine vibrations and induced resonance by combining spring-attached 4-stack TENGs. They achieved stable power production of 0.5 mW under conditions of 13 Hz and 0.56 g acceleration. The generated power was then used to operate a CO2\u00a0sensor and a Bluetooth Low Energy (BLE) system-on-a-chip (SoC).<\/span><\/p>\n

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Professor Kyeongha Kwon emphasized, “For efficient environmental monitoring, a system that can operate continuously without power limitations is essential.” She explained, “In this research, we implemented a self-powered system that can periodically measure and wirelessly transmit\u00a0CO2\u00a0concentrations based on the energy generated from an inertia-driven TENG.” She added, “This technology can serve as a foundational technology for future self-powered environmental monitoring platforms integrating various sensors.”<\/span><\/p>\n

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< Figure 2. TENG energy harvesting-based wireless CO2 sensing system operation results (c) Experimental setup (d) Measured CO2 concentration results powered by TENG and conventional DC power source ><\/span><\/figcaption><\/figure>\n

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This research was published on June 1st in the internationally renowned academic journal `Nano Energy\u00a0(IF 16.8)`. Gyurim Jang, a master’s student at KAIST, and Daniel Manaye Tiruneh, a master’s student at Chung-Ang University, are the co-first authors of the paper.\u00a0*Paper Title: Highly compact inertia-driven triboelectric nanogenerator for self-powered wireless\u00a0CO2\u00a0monitoring via fine-vibration harvesting *DOI:\u00a0https:\/\/doi.org\/10.1016\/j.nanoen.2025.110872<\/a>\u00a0<\/span><\/p>\n

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This research was supported by the Saudi Aramco-KAIST\u00a0CO2\u00a0Management Center.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

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