Miniaturized Springless Hybrid Nanogenerator For Powering Portable And Wearable Electronic Devices From Human-Body-Induced Vibration

This paper presents a newly designed springless hybridized nanogenerator (SHEMG-TENG) with non-resonant behavior, where the output power continuously increases with input frequency and amplitude. The device utilizes a dual-Halbach array and combines contact-separation and sliding-mode TENGs to achieve high power generation from low-frequency human-body-induced vibrations.

• Design of a springless, non-resonant hybridized nanogenerator (SHEMG-TENG).
• Utilization of a dual-Halbach array to achieve high power at low frequencies.
• Integration of both contact-separation and sliding-mode TENGs.
• Demonstrated high power generation from various human activities like handshaking, walking, and running.

The SHEMG-TENG was fabricated and its performance was verified using a vibration exciter and tests involving human-body-induced vibrations. The output power was measured under different frequencies, accelerations, and human activities in both horizontal and vertical positions.

The SHEMG-TENG generated an output power of 5.41 mW, corresponding to a volume power density of 395.4 W/m³, at 6 Hz and 1 g acceleration. It delivered significant power from human activities (up to 2.9 mW from handshaking), demonstrating its potential for powering wearable and portable electronics.