Origin of the contact force-dependent response of triboelectric nanogenerators

Min, Guanbo; Xu, Yang; Cochran, Peter; Gadegaard, Nikolaj; Mulvihill, Daniel M.; Dahiya, Ravinder

doi:10.1016/j.nanoen.2021.105829

Cited by 94 publications

(55 citation statements)

References 47 publications

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“…For example, triboelectric nanogenerators have been demonstrated to show varying power output with applied load, indicating that they can be used as both energy harvesters and pressure sensors. [91,92] Considering the increasing demand for energy, such solutions can add significant value to the automotive sector. The conductive cotton and jute fiberand resistance-based sensors have also been explored for temperature and humidity sensing and energy storage devices.…”

Section: Haptics or Touch-based Technologiesmentioning

confidence: 99%

Intelligent In‐Vehicle Interaction Technologies

Murali

Kaboli

Dahiya

2021

Advanced Intelligent Systems

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Autonomous vehicles (AVs) will soon become a reality with almost every major automotive original equipment manufacturer (OEM) such as Tesla, BMW, Daimler, and big technology giants such as Google's Waymo and Apple Car pushing toward the full self-driving objective. According to the SAE J3016 taxonomy [1] of autonomous driving, there are six levels of automated driving systems ranging from level 0 (completely manual) to level 5 (full selfdriving [FSD]) automated systems that are expected to function in all geographic locations, all weather conditions, and under all conditions. The proposed benefits of intelligent vehicles include fewer road accidents, enhanced safety, reduced traffic congestion, effective commute time usage, and importantly enjoyable and comfortable ride. With increased autonomy, the drivers also assume the role of mere passengers who are engaged in nondriving activities and are unavailable to participate in traffic interactions. This would increase complexity in a mixed-autonomy traffic environment as interactions with pedestrians and cyclists are based on visual cues with the driver. Therefore, intelligent vehicles also need to autonomously interact with other traffic participants such as pedestrians and cyclists and other vehicles.Human-vehicle interaction (HVI) is closely related to the field of human-robot interaction (HRI). It entails the problem of understanding and shaping the interaction dynamics between humans and vehicles. Particularly, the domain of interaction involves the study of sensation, perception, information exchange, inference, and decision-making. [2] With increasing levels of automation, the driver will have more time and choice to perform various tasks other than driving and this opens new avenues for interaction. As a result, a growing number of sensors are being incorporated into the vehicles to understand the driver's and/or passenger's actions, emotions, and personal choices to offer the precise functionalities and services for an enjoyable ride. [3] Figure 1 shows the schematic of in-vehicle interaction consisting of various interactive interfaces and sensing modalities present in the vehicle as well as some modes of interaction such as gestures, speech, and eye gaze.The advances in HVI have been presented in previous review articles, which have mainly focused on the detection of particular characteristics for driving assistance such as driver attention detection, [4] emotion recognition, [5] drowsiness detection, [6] mental workload, [7] and so on. A few other articles have reviewed the interior designs of AVs to better support and interact with drivers and passengers. [8,9] Likewise, the user interfaces (UIs) and user experience (UX) of vehicle interiors have been studied in context with manual as well as automated driving. [10] A number of previous works have also studied the interaction with the external

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Section: Haptics or Touch-based Technologiesmentioning

confidence: 99%

Intelligent In‐Vehicle Interaction Technologies

Murali

Kaboli

Dahiya

2021

Advanced Intelligent Systems

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“…As contact electrification can be affected by mechanical conditions [38,39], Figure 1(c) shows the ΔCPD of PVDF-TrFE sample under different contact forces (directly proportional to the deflection setpoint, detail calculation shown in experimental section). It can be seen that the sample was negatively charged during contact electrification, indicating the electron transfer from tip to sample due to the electron transfer dominated mechanism in the metal/dielectric pairs [40][41][42][43].…”

Section: Resultsmentioning

confidence: 99%

Dielectric Manipulated Charge Dynamics in Contact Electrification

et al. 2022

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Surface charge density has been demonstrated to be significantly impacted by the dielectric properties of tribomaterials. However, the ambiguous physical mechanism of dielectric manipulated charge behavior still restricts the construction of high-performance tribomaterials. Here, using the atomic force microscopy and Kelvin probe force microscopy, an in situ method was conducted to investigate the contact electrification and charge dynamics on a typical tribomaterial (i.e., BaTiO3/PVDF-TrFE nanocomposite) at nanoscale. Combined with the characterization of triboelectric device at macroscale, it is found that the number of transferred electrons increases with contact force/area and tends to reach saturation under increased friction cycles. The incorporated high permittivity BaTiO3 nanoparticles enhance the capacitance and electron trapping capability of the nanocomposites, efficiently inhibiting the lateral diffusion of electrons and improving the output performance of the triboelectric devices. Exponential decay of the surface potential is observed over monitoring time for all dielectric samples. At high BaTiO3 loadings, more electrons can drift into the bulk and combine with the induced charges on the back electrode, forming a large leakage current and accordingly accelerating the electron dissipation. Hence, the charge trapping/storing and dissipating, as well as the charge attracting properties, should be comprehensively considered in the design of high-performance tribomaterials.

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“…11b) [173]. The edible TENGs are also interesting developments towards renewable energy developed with natural materials [173,[175][176][177][178][179][180].…”

Section: Transient Piezoelectric Sensors and Energy Harvestersmentioning

confidence: 99%

Electronic Waste Reduction Through Devices and Printed Circuit Boards Designed for Circularity

Chakraborty

Kettle

Dahiya

2022

IEEE Flex. Electron.

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The development of Printed Circuit boards (PCBs) has so far followed a traditional linear economy value chain, leading to high volumes of waste production and loss of value at the end-of-life. Consequentially, the electronics industry requires a transition to more sustainable practices. This review article presents an overview of the potential solutions and new opportunities that may arise from the greater use of emerging sustainable materials and resource-efficient manufacturing. A brief contextual summary about how the international management of Waste PCBs (WPCBs) and legalization have evolved over the past 20 years is presented along with a review of the existing materials used in PCBs. The environmental and human health assessment of these materials relative to their usage with PCBs is also explained. This enables the identification of which eco-friendly materials and new technologies will be needed to improve the sustainability of the industry. Following this, a comprehensive analysis of existing WPCB processing is presented. Finally, a detailed review of potential solutions is provided, which has been partitioned by the use of emerging sustainable materials and resource-efficient manufacturing. It is hoped that this discussion will transform existing manufacturing facilities and inform policies, which currently focus on waste management towards waste reduction and zero waste.

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Origin of the contact force-dependent response of triboelectric nanogenerators

Cited by 94 publications

References 47 publications

Intelligent In‐Vehicle Interaction Technologies

Intelligent In‐Vehicle Interaction Technologies

Dielectric Manipulated Charge Dynamics in Contact Electrification

Electronic Waste Reduction Through Devices and Printed Circuit Boards Designed for Circularity

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