Biosensors: High Durable, Biocompatible, and Flexible Piezoelectric Pulse Sensor Using Single‐Crystalline III‐N Thin Film (Adv. Funct. Mater. 37/2019)

Chen, Jie; Liu, Haoran; Wang, Weijie; Nabulsi, Noor; Zhao, Wenbo; Kim, Ja Yeon; Kwon, Min‐Ki; Ryou, Jae‐Hyun

doi:10.1002/adfm.201970258

Cited by 24 publications

(23 citation statements)

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“…In some circumstances, the harvested electrical signals by nanogenerators can directly be used for active sensing of physiological parameters. [ 21,22 ] Meanwhile, those devices can convert mechanical energy and thermal energy from human bodies into electrical energy for the shortcomings of traditional biomedical electronic devices such as short battery life. At present, many types of SPBEs have been successfully manufactured, used to detect vital signs of the human body, or treat diseases.…”

Section: Introductionmentioning

confidence: 99%

Self‐powered technology based on nanogenerators for biomedical applications

Zhang

Gao

et al. 2021

Exploration

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Biomedical electronic devices have enormous benefits for healthcare and quality of life. Still, the long‐term working of those devices remains a great challenge due to the short life and large volume of conventional batteries. Since the nanogenerators (NGs) invention, they have been widely used to convert various ambient mechanical energy sources into electrical energy. The self‐powered technology based on NGs is dedicated to harvesting ambient energy to supply electronic devices, which is an effective pathway to conquer the energy insufficiency of biomedical electronic devices. With the aid of this technology, it is expected to develop self‐powered biomedical electronic devices with advanced features and distinctive functions. The goal of this review is to summarize the existing self‐powered technologies based on NGs and then review the applications based on self‐powered technologies in the biomedical field during their rapid development in recent years, including two main directions. The first is the NGs as independent sensors to converts biomechanical energy and heat energy into electrical signals to reflect health information. The second direction is to use the electrical energy produced by NGs to stimulate biological tissues or powering biomedical devices for achieving the purpose of medical application. Eventually, we have analyzed and discussed the remaining challenges and perspectives of the field. We believe that the self‐powered technology based on NGs would advance the development of modern biomedical electronic devices.

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Section: Introductionmentioning

confidence: 99%

Self‐powered technology based on nanogenerators for biomedical applications

Zhang

Gao

et al. 2021

Exploration

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“…[ 16–19 ] Among these, GaN is preferred for applications due to its mechanical robustness, biocompatibility, and well‐developed processes for industrial‐scale production. [ 20–23 ] PENGs are fabricated using a variety of geometrical designs such as thin film‐based PENGs [ 20,24 ] and 1D‐based PENGs that include an active medium composed of nanotubes (NTs), [ 25,26 ] nanowires (NWs), [ 27 ] nanorods, [ 28 ] nanosheets, [ 29 ] nanoparticles, [ 30 ] nanobelts, [ 31 ] nanofibers, [ 32 ] and nanocomposites. [ 15 ] Among the above‐mentioned 1D active media used to fabricate PENGs, NWs are the most promising candidates for piezoelectric applications because of their superior mechanical properties, structural perfection due to their defect‐free structure, better strain confinement, and high elastic limit of deformation without plastic deformation.…”

Section: Introductionmentioning

confidence: 99%

Highly Durable Piezoelectric Nanogenerator by Heteroepitaxy of GaN Nanowires on Cu Foil for Enhanced Output Using Ambient Actuation Sources

Johar

Waseem

Hassan

et al. 2020

Advanced Energy Materials

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Highly durable piezoelectric nanogenerators (PENGs) with high conversion efficiency and high power density are of great interest. Here, a foldable, scalable, durable, cost‐effective, sensitive, and high current output PENG developed by the direct integration of van der Waals heteroepitaxial growth of GaN nanowires (NWs) by metal‐organic chemical vapor deposition using a graphene coating on a Cu‐foil is reported where the direct growth of GaN on the metallic substrate plays a key role in achieving the high stability of the PENG. The PENG provides a durable and highly sensitive output compared to the previously reported GaN NW‐based PENGs fabricated by transferring NWs onto a foreign substrate. The reported PENG can harvest energy from a variety of ambient actuation sources such as bending, vibrations, air flow, finger pressing, foot striking, fluid flow, and normal force by weights, with the maximum piezoelectric output voltage and current density recorded as 19.7 V and 1.9 mA cm−2, respectively. Due to its high conversion efficiency, the PENG can power several LEDs and thus can be used to power electronic devices. More importantly, the PENG retains its performance after more than 4 million actuation cycles, demonstrating the potential of the design for practical applications using biomechanical and ambient actuation sources for self‐powered systems.

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“…Figure a summarizes the reported examples of physiological signal monitoring in different parts of human body. [ 62,209 ] Fu et al. developed a self‐powered hydrogel based on polyacrylonitrile–poly(vinylidene fluoride), which showed a good stretchability of 175% and high toughness of 1.23 MJ m −2 .…”

Section: Applications In Self‐powered Active Sensorsmentioning

confidence: 99%

Piezoelectric Nanogenerators Derived Self‐Powered Sensors for Multifunctional Applications and Artificial Intelligence

Cao

Xiong

Sun

et al. 2021

Adv Funct Materials

181

111

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With the arrival of the Internet of Things (IoTs) era, there is a growing requirement for systems with many sensor nodes in a variety of fields of applications. The demands for wireless, sustainable and independent operation are becoming more and more important for large‐scale sensor networks and systems. For these purposes, a self‐powered sensory system that can utilize the self‐harvested energy from its surroundings to drive the sensors and directly sense external stimuli has attracted great attention. The invention and rapid development of piezoelectric generators (PENGs), which take Maxwell's displacement current as the driving force, has been pushing forward research on self‐powered active mechanical sensors, electronic skins, and human‐robotic interaction. Here, this review starts with a brief introduction of piezoelectric materials, fabrication, and performance improvement. Then, the energy harvesters used for self‐power systems based on recent progress are reviewed. After that, PENGs applications toward recent self‐powered active sensors are divided into four aspects and highlighted, respectively. Moreover, some challenges and future directions for the self‐powered multifunctional sensors are put forward. It is believed that through the continuous investigations into PENG‐based self‐powered active sensors, they will soon be used in touch screens, electronic skins, health care, environmental monitoring, and intelligence systems.

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Biosensors: High Durable, Biocompatible, and Flexible Piezoelectric Pulse Sensor Using Single‐Crystalline III‐N Thin Film (Adv. Funct. Mater. 37/2019)

Cited by 24 publications

References 0 publications

Self‐powered technology based on nanogenerators for biomedical applications

Self‐powered technology based on nanogenerators for biomedical applications

Highly Durable Piezoelectric Nanogenerator by Heteroepitaxy of GaN Nanowires on Cu Foil for Enhanced Output Using Ambient Actuation Sources

Piezoelectric Nanogenerators Derived Self‐Powered Sensors for Multifunctional Applications and Artificial Intelligence

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