中国物理B ›› 2025, Vol. 34 ›› Issue (11): 110702-110702.doi: 10.1088/1674-1056/ae039b

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Cu/PTFE triboelectric nanogenerator for Morse code and array information detection

Yulin Yan(闫玉霖), Yiming Qi(齐一鸣), and Huaisheng Wang(王槐生)†   

  1. School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
  • 收稿日期:2025-07-19 修回日期:2025-08-21 接受日期:2025-09-05 发布日期:2025-10-30
  • 基金资助:
    Project supported by the State Key Laboratory of ASIC and System, Fudan University (Grant No. 2021KF005).

Cu/PTFE triboelectric nanogenerator for Morse code and array information detection

Yulin Yan(闫玉霖), Yiming Qi(齐一鸣), and Huaisheng Wang(王槐生)†   

  1. School of Electronic and Information Engineering, Soochow University, Suzhou 215006, China
  • Received:2025-07-19 Revised:2025-08-21 Accepted:2025-09-05 Published:2025-10-30
  • Contact: Huaisheng Wang E-mail:wanghuaisheng@suda.edu.cn
  • Supported by:
    Project supported by the State Key Laboratory of ASIC and System, Fudan University (Grant No. 2021KF005).

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摘要： The application of triboelectric nanogenerators (TENGs) for collecting and converting waste energy into usable electrical energy has been widely reported. However, their practical application in real-time, self-powered communication systems, particularly for robust information transmission, remains underexplored. To achieve stable self-energy supply information transmission, this study presents a lightweight and flexible single-electrode TENG sensor based on a copper (Cu) foil and polytetrafluoroethylene (PTFE) composite. We systematically studied the stability of the device and found that it could maintain an output voltage of approximately 9 V after being stored at room temperature for 1 month. We also evaluated its power generation capacity, which was demonstrated by successfully lighting up to seven LEDs simultaneously. Additionally, we utilized its unique voltage signal to transmit Morse code and successfully sent the messages “SOS” and “HELLO” over a long distance. Furthermore, a 2×2 TENG array was fabricated and tested, confirming excellent channel independence with minimal crosstalk during simultaneous or selective activation. This work demonstrates that the Cu/PTFE TENG sensor is not only a stable energy harvester but also a viable platform for self-powered communication and distributed sensing and holds promise in applications integrating flexible electronics and the Internet of things.

关键词: triboelectric nanogenerator (TENG), self-powered sensor, Morse code communication, energy harvesting, array independence

Abstract: The application of triboelectric nanogenerators (TENGs) for collecting and converting waste energy into usable electrical energy has been widely reported. However, their practical application in real-time, self-powered communication systems, particularly for robust information transmission, remains underexplored. To achieve stable self-energy supply information transmission, this study presents a lightweight and flexible single-electrode TENG sensor based on a copper (Cu) foil and polytetrafluoroethylene (PTFE) composite. We systematically studied the stability of the device and found that it could maintain an output voltage of approximately 9 V after being stored at room temperature for 1 month. We also evaluated its power generation capacity, which was demonstrated by successfully lighting up to seven LEDs simultaneously. Additionally, we utilized its unique voltage signal to transmit Morse code and successfully sent the messages “SOS” and “HELLO” over a long distance. Furthermore, a 2×2 TENG array was fabricated and tested, confirming excellent channel independence with minimal crosstalk during simultaneous or selective activation. This work demonstrates that the Cu/PTFE TENG sensor is not only a stable energy harvester but also a viable platform for self-powered communication and distributed sensing and holds promise in applications integrating flexible electronics and the Internet of things.

Key words: triboelectric nanogenerator (TENG), self-powered sensor, Morse code communication, energy harvesting, array independence

中图分类号:  (Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing)

  • 07.07.Df
46.55.+d (Tribology and mechanical contacts) 62.20.Qp (Friction, tribology, and hardness) 45.20.dg (Mechanical energy, work, and power)