Multifunctional Sensor Based on Translational‐Rotary Triboelectric Nanogenerator

Abstract

to the current multifunctional sensors. On the other hand, IoTs also expects the sensors can continuously work for long hours without maintenance. [10] The energy harvesting technologies that can provide continuous power supply [11][12][13][14][15][16] and selfpowered sensors that can directly transfer the detect information into electrical signals even without power [7,17,18] are the idea approaches to meet the requirements.Based on the triboelectric effect and the electrostatic induction, triboelectric nanogenerators (TENGs) invented by Wang and co-workers [19] have a few remarkable advantages, such as flexibility, light weight, easy integration. They have demonstrated to be an applicable solution for both self-powered sensing and energy harvesting. [20][21][22][23] Specifically, the force, [24] speed, [25,26] acceleration, [27,28] direction, [29] and angle [30] all can be measured by the TENG. And the TENG also has been successfully used to build multifunctional sensors. [31][32][33] Based on the TENG, a real multifunctional sensor enabled by magnetically regulated TENG has the capacity to measure motion parameters, including acceleration, speed, and direction of rotary and linear motions. [33] Unfortuately, six output channels increace the complexity of the sensor and the surface contact friction limits its sensitivity. Moreover, for enhancing the output performance of the TENG, many works are focused on the selection and the surface nanocrystallization of friction materials, which both are relatead to the triboelectric effect. [34][35][36] However, about the electrostatic induction, there also need some theoretical guidances of the electrode materials selection.In this paper, inspired by the movement statement of a magnetic cylinder placed beside a fixed magnetic cylinder, a cylindrical self-powered multifunctional sensor (MS) with a translational-rotary magnetic mechanism is presented, which is capable of detecting acceleration, force, and rotational parameters. The MS is composed of a translational-rotary magnetic mechanism, a TENG module, and an acrylic shell. The translational-rotary magnetic mechanism is a low damping magnetic cylinder (MC) rotating around a fixed circular tube, which is embedded by a magnetic disk (MD). The sensitivity of the MS can be adjusted by changing the distance between two magnets. The TENG module consists of the MC and a friction layer that is a polytetrafluorethylene (PTFE) film with two interdigitated electrodes (IEs) bonded on the surface of the tube. The MS can transform a translational motion into a swing motion or a Triboelectric nanogenerators with a large number of desirable advantages, such as flexibility, light weight, and easy integration, are unique for sensor design. In this paper, based on the triboelectric nanogenerator (TENG), a cylindrical self-powered multifunctional sensor (MS) with a translationalrotary magnetic mechanism is proposed, which has the capacity to detect acceleration, force, and rotational parameters. The MS can transform a translational motion...

Recent progress of triboelectric nanogenerators: From fundamental theory to practical applications

“…Since the TENG can directly convert mechanical stimuli into electrical signals without any additional transducers, it has outstanding potential for developing self‐powered sensors without using external power sources, such as pressure sensors, 91‐93 tactile sensors, 94‐96 motion sensors, 97‐99 acceleration sensors, 100‐102 chemical sensors, 103‐105 acoustic sensors, 106‐108 and photoelectric sensors 109,110 . Meanwhile, HMI is a field that utilizes various kinds of techniques to realize the interfaces between users and machines, and it has become increasingly important in a broad range of application domains, such as security, information communication, and healthcare.…”

Self-Powered Sensors and Systems Based on Nanogenerators

“…Based on a translational-rotary magnetic mechanism, a cylindrical TENG is proposed as a self-powered multifunctional sensor (MS) to measure force, acceleration, and rotational parameters [204]. The MS can easily give a response to even a weak strike, so it has also been utilized to build a vehicle safety application, as shown in Figure 20d.…”

Understanding the Percolation Effect in Triboelectric Nanogenerator with Conductive Intermediate Layer

“…Recently, harvesting ambient mechanical energy such as wind, water, and human motion has been proved as an excellent way to provide energy for such sensing nodes [ 5 – 7 ]. Compared with an electromagnetic generator (EMG), the triboelectric nanogenerator (TENG) has emerged as a powerful platform for the transformation of ambient mechanical energy into electricity and possesses merits of high-efficiency, low-cost, environmental friendliness, reliable, and diverse choice of materials, which has attracted much attention in recent years [ 8 – 10 ]. However, a major challenge of the TENG is the relatively low surface charge density that limits the output performance and potential applications [ 11 – 15 ].…”