Triboelectric Nanogenerators: Advances in Nanostructures for High‐Performance Triboelectric Nanogenerators (Adv. Mater. Technol. 3/2021)

Zou, Yongjiu; Xu, Jing; Chen, Kyle

doi:10.1002/admt.202170016

Cited by 33 publications

(37 citation statements)

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“…The hierarchical structure on the triboelectric layer can endow the textile triboelectric sensor high sensitivity like many other well‐designed microstructures. [ 40–43 ] Additionally, it has a higher electrical output due to the increased surface area, which has been verified by finite element simulation (Figure 2b; Figure S8a, Supporting Information). The results show that the electric potential distributions the hierarchically structured CNTs‐based device is much different and the open‐circuit voltage ( V OC ) is much higher compared to that of the planar one at the same gap distance of CNTs and FEP layers (Figure S8b, Supporting Information).…”

Section: Resultsmentioning

confidence: 54%

Ambulatory Cardiovascular Monitoring Via a Machine‐Learning‐Assisted Textile Triboelectric Sensor

et al. 2021

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Wearable bioelectronics for continuous and reliable pulse wave monitoring against body motion and perspiration remains a great challenge and highly desired. Here, a low‐cost, lightweight, and mechanically durable textile triboelectric sensor that can convert subtle skin deformation caused by arterial pulsatility into electricity for high‐fidelity and continuous pulse waveform monitoring in an ambulatory and sweaty setting is developed. The sensor holds a signal‐to‐noise ratio of 23.3 dB, a response time of 40 ms, and a sensitivity of 0.21 µA kPa−1. With the assistance of machine learning algorithms, the textile triboelectric sensor can continuously and precisely measure systolic and diastolic pressure, and the accuracy is validated via a commercial blood pressure cuff at the hospital. Additionally, a customized cellphone application (APP) based on built‐in algorithm is developed for one‐click health data sharing and data‐driven cardiovascular diagnosis. The textile triboelectric sensor enabled wireless biomonitoring system is expected to offer a practical paradigm for continuous and personalized cardiovascular system characterization in the era of the Internet of Things.

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Section: Resultsmentioning

confidence: 54%

Ambulatory Cardiovascular Monitoring Via a Machine‐Learning‐Assisted Textile Triboelectric Sensor

et al. 2021

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“…This method introduces diverse surface nanostructures with the aim of enhancing the surface roughness and effective contact area, thereby increasing the charge density between the triboelectric layers. [ 89 ] Paper [ 88,90 ] reviewed exhaustive surface engineering techniques and novel modified materials in TENGs, we will not elaborate them here.…”

Section: Energy Harvesting Strategies In Powering Cimdsmentioning

confidence: 99%

Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices

Zhang

Das

Zhao

et al. 2022

Adv Materials Technologies

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Cardiovascular disease continues to be one of the dominant causes of global mortality. One effective treatment is to utilize cardiovascular implantable devices (cIMDs) with multi‐functional cell sensing and monitoring features that have the potential to manipulate cardiovascular hyperplasia disorders as well as provide therapy. However, batteries with a fixed capacity entail high‐risk surgeries for battery‐replacement, which causes health hazards and imposes significant costs to patients. This review accesses comprehensive power solutions for cIMDs, from conventional batteries to state‐of‐the‐art energy harvesters and wireless power transfer (WPT) schemes. In particular, WPT has great potential to eliminate the percutaneous wires and overcome frequent battery removal. Here, the fundamentals, power transfer efficiency, antenna design and miniaturization, and operating frequencies in various WPT schemes are presented. Moreover, the power loss attenuation and bio‐safety standard (specific absorption rate) for implants are also considered in WPT design envelope. In addition, wireless data transmission of implantable devices from external to internal milieu (and vice versa) along with different modulation and demodulation techniques are investigated. The last advanced power solutions for cIMDs in in‐vivo and in vitro research are illustrated throughout. Finally, specifications and future potential of WPT systems in cIMDs are highlighted.

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“…In recent years, TENGs have emerged as a compelling technology to harness passive human biomechanical motions. [ 59,82,83 ] The working principle of TENGs is based on the coupling effect of contact electrification and electrostatic induction, which can be traced back to the Maxwell equations. As shown in Figure 2c, TENGs can operate in four working modes, including vertical contact–separation mode, linear sliding mode, single‐electrode mode, and freestanding triboelectric layer mode.…”

Section: Working Principlesmentioning

confidence: 99%

Triboelectric Nanogenerators for Self‐Powered Wound Healing

Xiao

Nashalian

Libanori

et al. 2021

Adv Healthcare Materials

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Wound healing, one of the most complex processes in the human body, involves the spatial and temporal synchronization of a variety of cell types with distinct roles. Slow or nonhealing skin wounds have potentially life-threatening consequences, ranging from infection to scar, clot, and hemorrhage. Recently, the advent of triboelectric nanogenerators (TENGs) has brought about a plethora of self-powered wound healing opportunities, owing to their pertinent features, including wide range choices of constitutive biocompatible materials, simple fabrication, portable size, high output power, and low cost. Herein, a comprehensive review of TENGs as an emerging biotechnology for wound healing applications is presented and covered from three unique aspects: electrical stimulation, antibacterial activity, and drug delivery. To provide a broader context of TENGs applicable to wound healing applications, state-of-the-art designs are presented and discussed in each section. Although some challenges remain, TENGs are proving to be a promising platform for human-centric therapeutics in the era of Internet of Things. Consequently, TENGs for wound healing are expected to provide a new solution in wound management and play an essential role in the future of point-of-care interventions.

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Triboelectric Nanogenerators: Advances in Nanostructures for High‐Performance Triboelectric Nanogenerators (Adv. Mater. Technol. 3/2021)

Cited by 33 publications

References 0 publications

Ambulatory Cardiovascular Monitoring Via a Machine‐Learning‐Assisted Textile Triboelectric Sensor

Ambulatory Cardiovascular Monitoring Via a Machine‐Learning‐Assisted Textile Triboelectric Sensor

Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices

Triboelectric Nanogenerators for Self‐Powered Wound Healing

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