Researchers at the University of Alabama in Huntsville (UAH) have developed a novel triboelectric nanogenerator (TENG) using inexpensive, commercially available tape. This innovative device converts mechanical energy—such as human movement and environmental vibrations—into electrical power, offering a promising source of energy for small electronics like wearable biosensors.
The TENG operates on the triboelectric effect, which generates electricity through friction or contact between different materials. The UAH team utilized layers of Scotch tape combined with metalized polyethylene terephthalate (PET) films as electrodes to create an efficient power-generating structure.
Power extraction occurs as polypropylene and the acrylic adhesive layers interact during pressing and releasing motions. This process creates atomic-scale gaps due to van der Waals forces, enabling energy conversion.
Published in American Chemical Society Omega, the study describes the TENG design as a vibration-based energy harvester, with the tape layers sandwiched between plastic plates and a mass attached to induce movement.
Dr. Moonhyung Jang, a UAH research scientist, explained, “We tested different types of Scotch tape and found combinations that generate higher power than double-sided tape. Since contact happens only on smooth surfaces, we avoid issues with sticky adhesives, allowing operation at high frequencies—up to 300 Hz.”
The device produces a peak power output of 53 milliwatts—enough to power 350 LED lights or a laser pointer. The team integrated the TENG into two prototype sensors: an acoustic sensor for sound waves and a wearable biosensor capable of detecting arm movements. These sensors have potential applications in monitoring muscle activity to prevent injuries and improve athletic performance.
“We plan to explore more applications and submit patent disclosures soon,” said Jang. “Our design significantly improves operating frequency compared to previous TENGs, which typically work below 5 Hz. Higher power output will enable broader uses of this technology.”
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