Phys.org December 12, 2022 The intrinsically stretchable triboelectric nanogenerators (TENGs) suffer from poor performance. To address the challenge, an international team of researchers (China, USA – the Pennsylvania State University) has developed a fully stretchable TENG consisting of an intrinsically stretchable MXene/silicone elastomer and silver nanowires (Ag NWs)-graphene foam nanocomposite. The TENG exhibited high output performance (voltage, current, and power), long-term reliability, and stable electrical output under various extreme deformation conditions. It harvested the intermittent mechanical energy from human bodies to charge various energy storage units such as commercial capacitors for driving wearable electronic devices. They demonstrated the systems in […]
Tag Archives: Nanogenerators
Electronic nanogenerator tattoos as human-machine interfaces
Nanowerk April 19, 2022 Although triboelectric nanogenerators (TENGs) have proven to be excellent candidates for wearable energy harvesters, they commonly face the hurdles of poor adhesion to skin and relative thick in geometry up to several cm. Researchers in China have introduced tattoo-like triboelectric nanogenerators (TL-TENGs) made with ultrathin materials with outstanding mechanical property of high robustness and thickness of tens of μm. They have remarkable electrical characteristics, with open-circuit voltage and short circuit current reaching up to ≈180 V and ≈2.2 μA under constant tapping (≈16 kPa), respectively. With the well structural mechanics designs, the TL-TENGs can be customized […]
Good vibrations for new energy
Nanowerk October 20, 2020 Triboelectric nanogenerators (TENGs) can be made at low cost in different configurations, making them suitable for driving small electronics such as mobile phones, biomechanics devices, and sensors. Researchers in Australia provide experimental and theoretical models for augmented rotary TENGs. The power generated by TENGs is found to be a function of the number of segments, rotational speed, and tribo-surface spacing. They applied mathematical modeling combined with artificial intelligence to characterize the TENG output under various kinematics and geometric conditions. Sensitivity analysis reveals that the generated energy and the matched resistance depend highly on segmentation and angular […]
This tiny device can scavenge wind energy from the breeze you make when you walk
TechXplore September 23, 2020 A breeze as gentle as 1.6 m/s (3.6 mph) was enough to power the triboelectric nanogenerator designed by an international team of researchers (China, Singapore). The nanogenerator performs at its best when wind velocity is between 4 to 8 m/s (8.9 to 17.9 mph), a speed that allows the two plastic strips to flutter in sync.[see embedded video]. The device also has a high wind-to-energy conversion efficiency of 3.23%. Currently the device can power up 100 LED lights and temperature sensors. Unlike wind turbines, this device is made of low-cost materials and it can be safely […]