Abstract
With advances in internet of things technology and fossil fuel depletion, energy harvesting has emerged rapidly as a means of supplying small electronics with electricity. As a method of enhancing the electrical output of the triboelectric nanogenerator, specialized for harvesting mechanical energy, structural modification to amplify the input force is receiving attention due to the limited input energy level. In this research, a lever structure was employed for delivering the amplified input force to a triboelectric nanogenerator. With structural optimization of a 2.5 cm : 5 cm distance ratio of the first and second parts using two lever structures, the highest electrical outputs were achieved: a VOC of 51.03 V, current density of 3.34 mA m−2, and power density of 73.5 mW m−2 at 12 MΩ in the second part. As applications of this triboelectric generator, a vertical vibration sensor and a wearable reloading trigger in a gun shooting game were demonstrated. The possibility for a wearable finger bending sensor with low-level input was checked using a minimized device. Enhanced low-detection limit with amplified input force from the structural advantage of this lever-based triboelectric nanogenerator device can expand its applicability to the mechanical trigger for wearable electronics.
Highlights
As the demand for electrical energy is continuously growing with the increasing number of wearable electronics and internet of things (IoT) devices, developing and using novel energy sources are recently attracting attention [1,2]
A lever-based triboelectric nanogenerators (TENGs) was fabricated by simple 3D printing technology and analyzed with force and electrical outputs
The two double-electrode TENGs were adopted in the 1st part- and 2nd part-TENGs and Inductively coupled plasma (ICP) etching was conducted on the dielectric layer of the PTFE film
Summary
As the demand for electrical energy is continuously growing with the increasing number of wearable electronics and internet of things (IoT) devices, developing and using novel energy sources are recently attracting attention [1,2]. The depletion of fossil fuels is accelerating the replacement of the fossil fuel-based conventional energy sources [3,4,5]. Multitudinous researchers have been focusing on how to harvest the ambient energy. The scavenged vibrational energy from humans, machines, and phenomena of nature can highly increase the operating time with the use of conventional batteries [7]. The energy harvesting technology can be an effective way to reuse the wasted energy
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