Relevant bibliographies by topics / Piezoelectric nanogenerators

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Academic literature on the topic 'Piezoelectric nanogenerators'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 November 2023

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Journal articles on the topic "Piezoelectric nanogenerators"

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Amangeldinova, Yerkezhan, Dimaral Aben, Xiaoting Ma, Heesang Ahn, Kyujung Kim, Dong-Myeong Shin, and Yoon-Hwae Hwang. "Enhancing Electrical Outputs of Piezoelectric Nanogenerators by Controlling the Dielectric Constant of ZnO/PDMS Composite." Micromachines 12, no. 6 (May 28, 2021): 630. http://dx.doi.org/10.3390/mi12060630.

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Structural optimizations of the piezoelectric layer in nanogenerators have been predicted to enhance the output performance in terms of the figure of merit. Here, we report the effect of dielectric constant on electrical outputs of piezoelectric nanogenerator using ZnO/PDMS composites with varied ZnO coverages. The dielectric constant of piezoelectric layers was adjusted from 3.37 to 6.75. The electrical output voltage of 9 mV was achieved in the nanogenerator containing the ZnO/PDMS composite with the dielectric constant of 3.46, which is an 11.3-fold enhancement compared to the value of the nanogenerator featuring the composite with high dielectric constants. Significantly, lowering the dielectric constant of the piezoelectric layer improves the electrical output performance of piezoelectric nanogenerators.
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Jiang, Yijing, Yongju Deng, and Hongyan Qi. "Microstructure Dependence of Output Performance in Flexible PVDF Piezoelectric Nanogenerators." Polymers 13, no. 19 (September 24, 2021): 3252. http://dx.doi.org/10.3390/polym13193252.

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Flexible piezoelectric nanogenerators have attracted great attention due to their ability to convert ambient mechanical energy into electrical energy for low-power wearable electronic devices. Controlling the microstructure of the flexible piezoelectric materials is a potential strategy to enhance the electrical outputs of the piezoelectric nanogenerator. Three types of flexible polyvinylidene fluoride (PVDF) piezoelectric nanogenerator were fabricated based on well-aligned nanofibers, random oriented nanofibers and thick films. The electrical output performance of PVDF nanogenerators is systematically investigated by the influence of microstructures. The aligned nanofiber arrays exhibit highly consistent orientation, uniform diameter, and a smooth surface, which possesses the highest fraction of the polar crystalline β phase compared with the random-oriented nanofibers and thick films. The highly aligned structure and the large fraction of the polar β phase enhanced the output performance of the well-aligned nanofiber nanogenerator. The highest output voltage of 14 V and a short-circuit current of 1.22 µA were achieved under tapping mode of 10 N at 2.5 Hz, showing the potential application in flexible electronic devices. These new results shed some light on the design of the flexible piezoelectric polymer-based nanogenerators.
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Mishra, Siju, P. Supraja, Vishnu V. Jaiswal, P. Ravi Sankar, R. Rakesh Kumar, K. Prakash, K. Uday Kumar, and D. Haranath. "Enhanced output of ZnO nanosheet-based piezoelectric nanogenerator with a novel device structure." Engineering Research Express 3, no. 4 (November 15, 2021): 045022. http://dx.doi.org/10.1088/2631-8695/ac34c3.

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Abstract We report a double-fold enhancement of piezoelectric nanogenerator output voltage with a simple design strategy. The piezoelectric nanogenerator is fabricated with ZnO nanosheets coated on both sides of the aluminum substrate in this new design strategy with necessary electrodes. The cost-effective hydrothermal method is employed to synthesize two-dimensional (2D) ZnO nanosheets on both sides of the aluminum substrate at a low growth temperature of 80 °C for 4 h. The ZnO nanosheets were characterized for their morphology, crystallinity, and photoluminescence property. The performance of nanogenerator fabricated with double-side coated aluminum substrate was compared to single-side coated aluminum substrate. The nanogenerators fabricated only with one side coating produced an output voltage of ∼170 mV. In contrast, the nanogenerators fabricated with double side coating produced an output voltage of ∼285 mV. The nanogenerator with double-side coating produced ∼1.7 times larger output voltage than that of single-side coated one. The enhancement in the output voltage is mainly due to ZnO nanosheet deformation along both sides and the electric field-induced synergetic effect between two front and back sides of piezoelectric nanogenerators. This nanogenerator fabrication technology has the potential to be scaled up for industrial production of piezoelectric energy collecting devices because of its simplicity and high output gain.
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Sheng, Jian Guo, Ping Zeng, and Can Can Zhang. "Study of the Manufacture about Piezoelectric Nanogenerator under Micro Vibration and its Performance." Applied Mechanics and Materials 105-107 (September 2011): 2109–12. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.2109.

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With the development of science and technology, the smaller sizes generator, the more attention by people. The main purpose of this article is to manufacture piezoelectric nanogenerator under micro vibration and its working principle is introduced and its performance is studied. The results show that, using the present nanomaterials, piezoelectric materials can be prepared. When its wind in copper laps, under the situation of micro pulse vibration its can turn into electrical energy, thus yield piezoelectric nanogenerators. In ambient vibration condition, piezoelectric materials produce larger rated current and voltage. However, copper laps cutting magnetic line of force produce less rated current and voltage. So the piezoelectric nanogenerators can be separately used to supply power. If multiple piezoelectric nanogenerator in tandem may produce higher voltage, current and power, which possess commercial value.
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Blanquer, Andreu, Oriol Careta, Laura Anido-Varela, Aida Aranda, Elena Ibáñez, Jaume Esteve, Carme Nogués, and Gonzalo Murillo. "Biocompatibility and Electrical Stimulation of Skeletal and Smooth Muscle Cells Cultured on Piezoelectric Nanogenerators." International Journal of Molecular Sciences 23, no. 1 (December 31, 2021): 432. http://dx.doi.org/10.3390/ijms23010432.

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Nanogenerators are interesting for biomedical applications, with a great potential for electrical stimulation of excitable cells. Piezoelectric ZnO nanosheets present unique properties for tissue engineering. In this study, nanogenerator arrays based on ZnO nanosheets are fabricated on transparent coverslips to analyse the biocompatibility and the electromechanical interaction with two types of muscle cells, smooth and skeletal. Both cell types adhere, proliferate and differentiate on the ZnO nanogenerators. Interestingly, the amount of Zn ions released over time from the nanogenerators does not interfere with cell viability and does not trigger the associated inflammatory response, which is not triggered by the nanogenerators themselves either. The local electric field generated by the electromechanical nanogenerator–cell interaction stimulates smooth muscle cells by increasing cytosolic calcium ions, whereas no stimulation effect is observed on skeletal muscle cells. The random orientation of the ZnO nanogenerators, avoiding an overall action potential aligned along the muscle fibre, is hypothesised to be the cause of the cell-type dependent response. This demonstrates the need of optimizing the nanogenerator morphology, orientation and distribution according to the potential biomedical use. Thus, this study demonstrates the cell-scale stimulation triggered by biocompatible piezoelectric nanogenerators without using an external source on smooth muscle cells, although it remarks the cell type-dependent response.
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Zhou, Xinran, Kaushik Parida, Oded Halevi, Shlomo Magdassi, and Pooi See Lee. "All 3D Printed Stretchable Piezoelectric Nanogenerator for Self-Powered Sensor Application." Sensors 20, no. 23 (November 26, 2020): 6748. http://dx.doi.org/10.3390/s20236748.

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With the rapid development of wearable electronic systems, the need for stretchable nanogenerators becomes increasingly important for autonomous applications such as the Internet-of-Things. Piezoelectric nanogenerators are of interest for their ability to harvest mechanical energy from the environment with its inherent polarization arising from crystal structures or molecular arrangements of the piezoelectric materials. In this work, 3D printing is used to fabricate a stretchable piezoelectric nanogenerator which can serve as a self-powered sensor based on synthesized oxide–polymer composites.
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Pabba, Durga Prasad, Mani Satthiyaraju, Ananthakumar Ramasdoss, Pandurengan Sakthivel, Natarajan Chidhambaram, Shanmugasundar Dhanabalan, Carolina Venegas Abarzúa, et al. "MXene-Based Nanocomposites for Piezoelectric and Triboelectric Energy Harvesting Applications." Micromachines 14, no. 6 (June 20, 2023): 1273. http://dx.doi.org/10.3390/mi14061273.

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Due to its superior advantages in terms of electronegativity, metallic conductivity, mechanical flexibility, customizable surface chemistry, etc., 2D MXenes for nanogenerators have demonstrated significant progress. In order to push scientific design strategies for the practical application of nanogenerators from the viewpoints of the basic aspect and recent advancements, this systematic review covers the most recent developments of MXenes for nanogenerators in its first section. In the second section, the importance of renewable energy and an introduction to nanogenerators, major classifications, and their working principles are discussed. At the end of this section, various materials used for energy harvesting and frequent combos of MXene with other active materials are described in detail together with the essential framework of nanogenerators. In the third, fourth, and fifth sections, the materials used for nanogenerators, MXene synthesis along with its properties, and MXene nanocomposites with polymeric materials are discussed in detail with the recent progress and challenges for their use in nanogenerator applications. In the sixth section, a thorough discussion of the design strategies and internal improvement mechanisms of MXenes and the composite materials for nanogenerators with 3D printing technologies are presented. Finally, we summarize the key points discussed throughout this review and discuss some thoughts on potential approaches for nanocomposite materials based on MXenes that could be used in nanogenerators for better performance.
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Li, Weiping, Yupeng Zhang, and Chunxu Pan. "Graphene-based Nanogenerator: Experiments, Theories and Applications." MRS Proceedings 1782 (2015): 15–21. http://dx.doi.org/10.1557/opl.2015.677.

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ABSTRACTIn addition to the piezoelectric nanogenerators and triboelectric nanogenerators, recently, the graphene-based nanogenerator has been widely concerned because of its simple assembly, flexibility and high structural stability. There are many interesting effects in graphene applied for nanogenenrators including anion adsorption in electrolyte solution, ion channels in graphene sheets network and the strain (band engineering) effect, etc. In this paper, we focus explicitly on the experimental results, mechanisms and applications of the graphene-based nanogenerator, and introduce our recent research on the graphene-based nanogenerator based on "modulation of the graphene strain-energy band effect". This nanogenerator is expected to have potential applications in active sensors and sustainable power source.
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Wang, Zhao, Xumin Pan, Yahua He, Yongming Hu, Haoshuang Gu, and Yu Wang. "Piezoelectric Nanowires in Energy Harvesting Applications." Advances in Materials Science and Engineering 2015 (2015): 1–21. http://dx.doi.org/10.1155/2015/165631.

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Recently, the nanogenerators which can convert the mechanical energy into electricity by using piezoelectric one-dimensional nanomaterials have exhibited great potential in microscale power supply and sensor systems. In this paper, we provided a comprehensive review of the research progress in the last eight years concerning the piezoelectric nanogenerators with different structures. The fundamental piezoelectric theory and typical piezoelectric materials are firstly reviewed. After that, the working mechanism, modeling, and structure design of piezoelectric nanogenerators were discussed. Then the recent progress of nanogenerators was reviewed in the structure point of views. Finally, we also discussed the potential application and future development of the piezoelectric nanogenerators.
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Elvira-Hernández, Ernesto A., Juan C. Anaya-Zavaleta, Eustaquio Martínez-Cisneros, Francisco López-Huerta, Luz Antonio Aguilera-Cortés, and Agustín L. Herrera-May. "Electromechanical Modeling of Vibration-Based Piezoelectric Nanogenerator with Multilayered Cross-Section for Low-Power Consumption Devices." Micromachines 11, no. 9 (September 17, 2020): 860. http://dx.doi.org/10.3390/mi11090860.

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Piezoelectric nanogenerators can convert energy from ambient vibrations into electrical energy. In the future, these nanogenerators could substitute conventional electrochemical batteries to supply electrical energy to consumer electronics. The optimal design of nanogenerators is fundamental in order to achieve their best electromechanical behavior. We present the analytical electromechanical modeling of a vibration-based piezoelectric nanogenerator composed of a double-clamped beam with five multilayered cross-sections. This nanogenerator design has a central seismic mass (910 μm thickness) and substrate (125 μm thickness) of polyethylene terephthalate (PET) as well as a zinc oxide film (100 nm thickness) at the bottom of each end. The zinc oxide (ZnO) films have two aluminum electrodes (100 nm thickness) through which the generated electrical energy is extracted. The analytical electromechanical modeling is based on the Rayleigh method, Euler–Bernoulli beam theory and Macaulay method. In addition, finite element method (FEM) models are developed to estimate the electromechanical behavior of the nanogenerator. These FEM models consider air damping at atmospheric pressure and optimum load resistance. The analytical modeling results agree well with respect to those of FEM models. For applications under accelerations in y-direction of 2.50 m/s2 and an optimal load resistance of 32,458 Ω, the maximum output power and output power density of the nanogenerator at resonance (119.9 Hz) are 50.44 μW and 82.36 W/m3, respectively. This nanogenerator could be used to convert the ambient mechanical vibrations into electrical energy and supply low-power consumption devices.
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Dissertations / Theses on the topic "Piezoelectric nanogenerators"

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Satti, Nour Eiman. "Development of Zinc Oxide Piezoelectric Nanogenerators for Low Frequency Applications." Doctoral thesis, Linköpings universitet, Institutionen för teknik och naturvetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-131858.

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Energy harvesting using piezoelectric nanomaterials provides an opportunity for advancement towards self-powered systems. Self-powered systems are a new emerging technology, which allows the use of a system or a device that perform a function without the need for external power source like for example, a battery or any other type of source. This technology can for example use harvested energy from sources around us such as ambient mechanical vibrations, noise, and human movement, etc. and convert it to electric energy using the piezoelectric effect. For nanoscale devices, the size of traditional batteries is not suitable and will lead to loss of the concept of “nano”. This is due to the large size and the relatively large magnitude of the delivered power from traditional sources. The development of a nanogenerator (NG) to convert energy from the environment into electric energy would facilitate the development of some self-powered systems relying on nano- devices. The main objective of this thesis is to fabricate a piezoelectric Zinc Oxide (ZnO) NGs for low frequency (˂ 100 Hz) energy harvesting applications. For that, different types of NGs based on ZnO nanostructures have been carefully developed, and studied for testing under different kinds of low frequency mechanical deformations. Well aligned ZnO nanowires (NWs) possessing high piezoelectric coefficient were synthesized on flexible substrates using the low temperature hydrothermal route. These ZnO NWs were then used in different configurations to demonstrate different low frequency energy harvesting devices. Using piezoelectric ZnO NWs, we started with the fabrication of sandwiched NG for hand writing enabled energy harvesting device based on a thin silver layer coated paper substrate. Such device configurations can be used for the development of electronic programmable smart paper. Further, we developed this NG to work as a triggered sensor for wireless system using foot-step pressure. These studies demonstrate the feasibility of using ZnO NWs piezoelectric NG as a low-frequency self-powered sensor, with potential applications in wireless sensor networks. After that, we investigated and fabricated a sensor on PEDOT: PSS plastic substrate either by one side growth technique or by using double sided growth. For the first growth technique, the fabricated NG has been used as a sensor for acceleration system; while the fabricated NG by the second technique has worked as anisotropic directional sensor. This fabricated configurations showed stability for sensing and can be used in surveillance, security, and auto-mobil applications. In addition to that, we investigated the fabrication of a sandwiched NG on plastic substrates. Finally, we demonstrated that doping ZnO NWs with extrinsic element (such as Ag) will lead to the reduction of the piezoelectric effect due to the loss of crystal symmetry. A brief summary into future opportunities and challenges are also presented in the last chapter of this thesis.
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Zhu, Guang. "Nanogenerators for self-powered applications." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/51731.

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We are surrounded by enormous amounts of ambient mechanical energy that goes to waste such as rain drops, human footfalls, air flow, ocean waves, just to name a few. If such otherwise wasted mechanical energy can be effective converted into electricity, self-powered electronics are very likely to be realized, which can address the limitations of traditional power supplies in many cases, such as wireless sensor networks. Here in this work, two types of energy-harvesting nanogenerators (NGs) based were studied. For piezoelectric nanogenerators, zinc oxide (ZnO) nanowires (NWs) were used as building blocks to develop integrated NGs based on a number of ZnO NWs instead of a single NW. Two types of integrated NGs were developed, which consist of lateral NW arrays and vertical NW arrays. The electric output power was substantially enhanced compared to the design with a single NW. For triboelectric nanogenerators, triboelectric effect was innovatively used as an effective means of harvesting mechanical energy. The operating principle can be explained by the coupling between triboelectric and electrostatic effect. Two types of operating modes were invented, i.e. contact mode and sliding mode. Triggered by commonly available ambient mechanical energy such as footfalls, the maximum output power reached up to 1.2 W. More importantly, self-powered systems were built by using the NG as a power source. It can provide real time power for up to 600 commercial LED bulbs. This research not only provides the fundamentals for NGs but also demonstrates the practicability of using the self-powered technology in our daily life.
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Dahiya, Abhishek Singh. "Nanostructures en ZnO pour l'électronique et la récupération d'énergie." Thesis, Tours, 2016. http://www.theses.fr/2016TOUR4007/document.

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Les nanomatériaux et nanotechnologies sont devenus un élément incontournable dans l'électronique de faible puissance, la production énergétique / gestion et les réseaux sans fil, offrant la possibilité de construire une vision pour les capteurs autonomes. Cette thèse s’intéresse au concept de systèmes basse température utilisant des structures de matériaux hybrides organique/inorganique pour la réalisation de dispositifs électroniques faible coût, dont les transistors à effet de champ (FET) et les nanogénérateurs piézoélectriques (nommés PENGs) et ce, sur divers substrats en particulier plastiques. Pour atteindre ces objectifs, ce travail décrit d'abord la croissance contrôlée de nanostructures monocristallines de ZnO en utilisant des approches vapeur-liquide-solide (VLS) et hydrothermales à haute et basse température respectivement. Pour les dispositifs FET, les nanostructures ZnO obtenues par VLS sont utilisées en raison de leur haute qualité structurale et optique. Les sections suivantes présentent des différentes études menées pour optimiser les prototypes FET, comprenant (i) les contacts métal-semiconducteur, (ii) la qualité de l'interface semi-conducteur/isolant et (iii) l'épaisseur de diélectrique organique. La dernière section examine la possibilité de fabriquer des systèmes hybrides organiques/inorganiques pour PENGs utilisant l'approche hydrothermale. Certaines des questions clés, ce qui limitent les performances PENG sont abordés : (i) l'effet de porteurs libres et (ii) l'encapsulation polymère. Ce travail démontre le fort potentiel des ZnO nanostructures pour l'avenir de l'électronique
Nanomaterials and nanotechnology has become a crucial feature in low-power electronics, energy generation/management and wireless networks, providing the opportunity to build a vision for autonomous sensors. The present thesis delivers the concept of low-temperature processable organic / inorganic hybrid systems for the realization of inexpensive electronic devices including field-effect transistors (FETs) and piezoelectric nanogenerators (PENGs) on various substrates including plastics. To achieve these objectives, this work first describes the controlled growth of single-crystalline ZnO nanostructures using high-temperature vapor-liquid-solid (VLS) and low-temperature hydrothermal approaches. For the FET devices, VLS grown ZnO nanostructures are used, owing to their high structural and optical quality. Later sections present different studies conducted to optimize the FET prototypes, includes: (i) metal-semiconductor contacts, (ii) semiconductor/insulator interface quality and (iii) organic dielectric thickness. The last section investigates the possibility to fabricate organic / inorganic hybrid systems for PENGs using hydrothermal approach. Some of the key issues, restricting the PENG performances are addressed: (i) screening effect from free charge carriers and (ii) polymer encapsulation. This work demonstrates the high potential of ZnO nanostructure for the future of electronics
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Tao, Ran. "Piezoelectric generators based on semiconducting nanowires : simulation and experiments." Thesis, Université Grenoble Alpes (ComUE), 2017. http://www.theses.fr/2017GREAT094/document.

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L’alimentation en énergie des réseaux de capteurs miniaturisés pose une question fondamentale, dans la mesure où leur autonomie est un critère de qualité de plus en plus important pour l’utilisateur. C’est même une question cruciale lorsque ces réseaux visent à assurer une surveillance d’infrastructure (avionique, machines, bâtiments…) ou une surveillance médicale ou environnementale. Les matériaux piézoélectriques permettent d’exploiter l’énergie mécanique inutilisée présente en abondance dans l’environnement (vibrations, déformations liées à des mouvements ou à des flux d’air…). Ils peuvent ainsi contribuer à rendre ces capteurs autonomes en énergie. Sous la forme de nanofils (NF), les matériaux piézoélectriques offrent une sensibilité qui permet d’exploiter des sollicitations mécaniques très faibles. Ils sont également intégrables, éventuellement sur substrat souple.Dans cette thèse nous nous intéressons au potentiel des nanofils de matériaux semi-conducteurs piézoélectriques, tels que ZnO ou les composés III-V, pour la conversion d’énergie mécanique en énergie électrique. Depuis peu, ceux-ci ont fait l’objet d’études relativement nombreuses, avec la réalisation de nanogénérateurs (NG) prometteurs. De nombreuses questions subsistent toutefois avec, par exemple, des contradictions notables entre prédictions théoriques et observations expérimentales.Notre objectif est d’approfondir la compréhension des mécanismes physiques qui définissent la réponse piézoélectrique des NF semi-conducteurs et des NG associés. Le travail expérimental s’appuie sur la fabrication de générateurs de type VING (Vertical Integrated Nano Generators) et sur leur caractérisation. Pour cela, un système de caractérisation électromécanique a été construit pour évaluer les performances des NG réalisés et les effets thermiques sous une force compressive contrôlée. Le module d’Young et les coefficients piézoélectriques effectifs de NF de GaN; GaAs et ZnO et de NF à structure cœur/coquille à base de ZnO ont été évalués également dans un microscope à force atomique (AFM). Les nanofils de ZnO sont obtenus par croissance chimique en milieu liquide sur des substrats rigides (Si) ou flexibles (inox) puis sont intégrés pour former un générateur. La conception du dispositif VING s’est appuyée sur des simulations négligeant l’influence des porteurs libres, comme dans la plupart des études publiées. Nous avons ensuite approfondi le travail théorique en simulant le couplage complet entre les effets mécaniques, piézoélectriques et semi-conducteurs, et en tenant compte cette fois des porteurs libres. La prise en compte du piégeage du niveau de Fermi en surface nous permet de réconcilier observations théoriques et expérimentales. Nous proposons notamment une explication au fait que des effets de taille apparaissent expérimentalement pour des diamètres au moins 10 fois plus grands que les valeurs prévues par simulation ab-initio ou au fait que la réponse du VING est dissymétrique selon que le substrat sur lequel il est intégré est en flexion convexe ou concave
Energy autonomy in small sensors networks is one of the key quality parameter for end-users. It’s even critical when addressing applications in structures health monitoring (avionics, machines, building…), or in medical or environmental monitoring applications. Piezoelectric materials make it possible to exploit the otherwise wasted mechanical energy which is abundant in our environment (e. g. from vibrations, deformations related to movements or air fluxes). Thus, they can contribute to the energy autonomy of those small sensors. In the form of nanowires (NWs), piezoelectric materials offer a high sensibility allowing very small mechanical deformations to be exploited. They are also easy to integrate, even on flexible substrates.In this PhD thesis, we studied the potential of semiconducting piezoelectric NWs, of ZnO or III-V compounds, for the conversion from mechanical to electrical energy. An increasing number of publications have recently bloomed about these nanostructures and promising nanogenerators (NGs) have been reported. However, many questions are still open with, for instance, contradictions that remain between theoretical predictions and experimental observations.Our objective is to better understand the physical mechanisms which rule the piezoelectric response of semiconducting NWs and of the associated NGs. The experimental work was based on the fabrication of VING (Vertical Integrated Nano Generators) devices and their characterization. An electromechanical characterization set-up was built to evaluate the performance and thermal effects of the fabricated NGs under controlled compressive forces. Atomic Force Microscopy (AFM) was also used to evaluate the Young modulus and the effective piezoelectric coefficients of GaN, GaAs and ZnO NWs, as well as of ZnO-based core/shell NWs. Among them, ZnO NWs were grown using chemical bath deposition over rigid (Si) or flexible (stainless steel) substrates and further integrated to build VING piezoelectric generators. The VING design was based on simulations which neglected the effect of free carriers, as done in most publications to date. This theoretical work was further improved by considering the complete coupling between mechanical, piezoelectric and semiconducting effects, including free carriers. By taking into account the surface Fermi level pinning, we were able to reconcile theoretical and experimental observations. In particular, we propose an explanation to the fact that size effects are experimentally observed for NWs with diameters 10 times higher than expected from ab-initio simulations, or the fact that VING response is non-symmetrical according to whether the substrate on which it is integrated is actuated with a convex or concave bending
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Boubenia, Sarah. "Générateurs piézoélectriques à base de nanofils piézo-semiconducteurs : modélisation, fabrication et caractérisation." Electronic Thesis or Diss., Tours, 2019. http://www.theses.fr/2019TOUR4038.

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La demande de nouvelles technologies de conversion d'énergie augmente considérablement. Elle a pour but d’offrir une durée de vie augmentée aux microsystèmes et garantir ainsi leur autonomie sans aucune intervention humaine. Dans cette thèse, nous exploitons les nanotechnologies pour le développement d’une nouvelle génération de récupérateurs d’énergie mécanique flexibles et robustes, à partir des matériaux piézoélectriques. Des études expérimentales et des simulations numériques ont été effectuées afin d’améliorer les performances des NanoGénérateurs PiézoElectriques (PENG). Le dispositif piézoélectrique actif choisi est à base de nanofils de ZnO, synthétisé via une voie de synthèse hydrothermale à faible coût et basse température, compatible avec l’utilisation de substrats souples. Des études ont été effectuées dans le but d’optimiser les propriétés des nanostructures piézoélectriques, tels que la densité de charge libre dans le semi-conducteur, mais aussi la densité surfacique et la morphologie des nanofils. Des PENGs flexibles sur substrat de polydiméthylsiloxane, ont également été fabriqués et soumis à une force de compression à basse fréquence, montrant une bonne reproductibilité des performances, avec une puissance moyenne de 0,25 µW sur une charge de 56 MΩ, pour une force de 6 N appliquée à la fréquence de 5 Hz. Cette thèse ouvre d’intéressantes perspectives de développement des systèmes de récupération d'énergie mécanique totalement flexibles pour un développement de microsystèmes autonomes
The demand for new technologies of energy conversion is dramatically increasing that can offer increased life to the micro-systems and also ensures their energy autonomy without any human intervention. By exploiting nanotechnologies, the present thesis focuses on the development of new generation of flexible and robust piezoelectric mechanical energy harvesters, from piezoelectric materials. Both experiment and theoretical simulation studies are performed to improve the performance of PiezoElectric NanoGenerators (PENGs). The active piezoelectric material, ZnO nanowires, are synthesized via cost-effective and low-temperature hydrothermal synthesis route, compatible with different types of flexible substrates. Studies have been carried out in order to optimize the properties of piezoelectric material properties such as effect of free charge density in semiconductor, density and morphology of nanowires. Flexible PENGs on a polydimethylsiloxane substrate are also manufactured and subjected to a low frequency compression force, showing good performance reproducibility, with an average power of 0,25 µW on a load of 56 MΩ, for an applied force of 6 N at the frequency of 5 Hz. This thesis can open up interesting opportunities to develop fully flexible mechanical energy recovery systems for the development of autonomous micro systems
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Armas, Jeremy A. "Influence of High Aspect Ratio Nanoparticle Filler Addition on Piezoelectric Nanocomposites." DigitalCommons@CalPoly, 2018. https://digitalcommons.calpoly.edu/theses/2026.

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Piezoelectric nanogenerators (PNGs) are a new class of energy harvesting materials that show potential as a direct energy source for low powered electronics. Recently, piezoelectric polymers have been utilized for PNG technology due to low toxicity, high flexibility, and facile solution processing which provide manufacturing opportunities such as screen printing. Throughout the last decade, countless projects have focused on how to enhance the energy harvesting capabilities of these PNGs through the incorporation of nanoparticle fillers, which have been reported to enhance the piezoelectric properties of the film either directly through their intrinsic piezoelectric properties or through acting as surfaces for the interfacial nucleation of piezoelectric polymer crystals. Herein, two systems of PNGs formed from piezoelectric copolymers poly(vinylidene fluoride-co-hexafluropropylene) or poly(vinylidene fluoride-co-trifluoroethylene) mixed with high aspect ratio zinc oxide nanowires, hydroxyl functionalized multi-walled carbon nanotubes, or carboxylic acid functionalized single walled carbon nanotubes were investigated. Variations of filler type and loading are tested to determine influences on film morphology and piezoelectric properties. Power harvesting tests are conducted to directly determine the effect of nanoparticle addition on the output power of the non-poled devices. Both copolymer systems are found to exhibit a non-linear increase in output power with the increase of nanoparticle filler loading. The crystal polymorph properties of both systems are investigated by Fourier transform infrared spectroscopy. The microstructure of the poly(vinylidene fluoride-co-trifluoroethylene) films are further examined using X-ray diffraction, differential scanning calorimetry, polarized optical microscopy, and atomic force microscopy to determine the mechanism behind the increased power harvesting capabilities. As well, explanations for perceived output power from “self-poled” films are briefly explored.
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Tsai, Wei-Cheng, and 蔡維晟. "Fabrication and Characterization of ZnO-based Piezoelectric Nanogenerators." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65n9wv.

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碩士
國立虎尾科技大學
光電與材料科技研究所
100
Zinc oxide is a II-VI semiconductor material with direct band-gap of 3.37eV corresponding to the wavelength in the ultraviolet region. ZnO also has large exction binding energy (~60 meV). In addition, ZnO has low resistivity and high transparency in the visible region. As a result, ZnO is considered as a promising material for the application of the optoelectronics. In this study, ZnO film is deposited by sputter on ITO glass substrate,one dimensional type of ZnO nanorods nanostructure are grown by Hydrothermal. One dimensional type of nanostructure is analyed physical properties of ZnO nanorods and ZnO nanorods doped Ni and optical properties by XRD、FE-SEM、UV-VIS、photoluminescence.First, ZnO nanorods are grown respectively on ITO glass and PET substrate, then fabricate naogeneratator by making top electrode. Nanogenerator are driven by ultrasonic waves. ZnO nanorods are grown 9 hours and measured its voltage and current. The average current and average voltage are respectively 2.11×10-6 A and 0.08V. It can obtained well after deflecting by fabricating piezoelectric nanogenerator used ZnO films. Second, ZnO nanorods are grown on ITO glass, then fabricat top electode. We use ultrasonic waves to drive nanogenerator. The average current and average voltage of 0.007 moles are 9.6×10-6A and 0.96V at 3 hours, 6.02×10-5A and 0.06V at 6 hours, 1.05×10-5 A and 0.07V at 9 hours. ZnO nanorods with more Ni doped can obtained better characteristic of voltage – current then undoped.
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Tsai, Ju-Hsuan, and 蔡儒璇. "Aluminum-doped zinc oxide nanostructures applied in piezoelectric nanogenerators." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/u4u9t2.

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碩士
國立虎尾科技大學
光電與材料科技研究所
97
Using low temperature wet chemical growth of one-dimensional aluminum-doped zinc oxide nanostructure on indium-tin oxide (ITO) substrates and flexible plastic substrates. Discuss effects of growth temperatures, concentrations, and reaction time on the morphology and characteristics of the ZnO nanorods. Photoluminescence (PL) and UV/Vis spectrometer were also employed to understand the luminescent and transmittance characteristics of the nanorods. This was due to the combination of Zn+ ions and OH- ions which affected by doping concentration. The results showed that when the temperatures and reaction time increased, the diameters of the nanorods increased. The photoluminescence measurements showed that the ZnO nanorods had good ultraviolet emission and blue emission. Furthermore, we assembled the ZnO nanorods arrays with zigzag electrodes for nanogenerators which driver by ultrasonic vibration. The current performance and Schottky barrier of the nanogenerators were also discussed.
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Li-ChengCheng and 鄭力誠. "Enhancement of piezoelectric properties of ZnO thin films by Yttrium doping for piezoelectric nanogenerators." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/3b6f24.

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碩士
國立成功大學
材料科學及工程學系
107
Wurtzite structure materials such as ZnO are considered to be the promising candidate for nanogenerators because of its unique properties. In this paper, we investigate the effect of yttrium(Y) doping on the piezoelectric coefficient of ZnO thin films synthesized on p-type Si (111) substrates via RF magnetron sputtering. XRD diffraction patterns show that all films presented ZnO wurtzite structure with c-axis preferential orientation and high crystallinity under small amount of yttrium doping. The chemical binding energy and composition of the thin films are measured by XPS, and the results confirm the substitution of zinc by yttrium. The electric hysteresis loop exhibits the ferroelectric property of Y doped ZnO thin films, which is the key to the enhancement of piezoelectric properties. The measurement of piezoelectric coefficient (d33) by PFM showing that Y doped ZnO thin films reach 49.6 pm/V at yttrium concentration is 1.6 a.t.%, which is higher than d33 of pure ZnO thin films. The Y doped ZnO based-nanogenetors present better output performance than that of ZnO based-nanogenerators, so it is considered that Y doped ZnO thin films have more potential to be developed on the field of nanogenerators.
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HUANG, BO-WEI, and 黃柏崴. "Piezoelectric Nanogenerators Based on Sulfur-Doped Zinc Oxide Nanorod Arrays." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/zcajmj.

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碩士
國立虎尾科技大學
光電工程系光電與材料科技碩士班
106
Zinc oxide is II-VI compound semiconductor with a direct bandgap energy band structure (energy gap of 3.37 eV) and it also has large exction binding energy 60 meV. In addition, ZnO has the characteristic of low resistivity and high transparency, therefore, it is considered as a promising material for the application of the optoelectronics. In this study, ZnO film is deposited by sputter on ITO glass substrate, and Sulfur-doped ZnO nanorod Arrays structure are grown by hydrothermal method. Then, the shape of Sulfur-doped ZnO nanorod Arrays was analyzed by field Emission Scanning Electron Microscope (FE-SEM) and Transmission Electron Microscope (TEM). Analysis of Sulfur-doping into ZnO nanorod Arrays by Energy-Dispersive Spectroscopy (EDS) and Secondary Ion Mass Spectrometry (SIMS). Analysis of Sulfur-doping ZnO nanorod Arrays was crystallization and optical properties by Spectrum Analysis (XRD) and Fluorescence Spectroscopy (PL). In this study, the ITO etching paste was used to define the pattern. An electrode of Aluminum film was deposited on the ITO substrate by sputtering, then assembled with a sulfur-doped ZnO nanorod Arrays to form a nanogenerators, Using ultrasonic was driven nanogenerators. In this study, Sulfur-doping concentration of 0.005 mol is the best parameter, and the nanogenerator are measured with an average voltage of 150 mV, an average current of 0.16 μA, and an average power of 24 nW, respectively.
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Books on the topic "Piezoelectric nanogenerators"

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Islam, Shahid Ul, Satyaranjan Bairagi, and Wazed Ali. Textile Based Piezoelectric Nanogenerators: Advances and Perspectives. Elsevier Science & Technology, 2024.

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Book chapters on the topic "Piezoelectric nanogenerators"

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Padha, Bhavya, Sonali Verma, and Sandeep Arya. "Piezoelectric Nanogenerators." In Nanogenerators, 77–120. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003187615-6.

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Panwar, Vishal, Atif Suhail, and Indranil Lahiri. "Large-Scale Applications of Triboelectric, Piezoelectric, and Pyroelectric Nanogenerators." In Nanogenerators, 335–60. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003187615-14.

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Sengupta, Debarun, and Ajay Giri Prakash Kottapalli. "Flexible and Wearable Piezoelectric Nanogenerators." In Self-Powered and Soft Polymer MEMS/NEMS Devices, 31–60. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05554-7_2.

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Wang, Xudong, and Jian Shi. "Piezoelectric Nanogenerators for Self-powered Nanodevices." In Nanomedicine and Nanotoxicology, 135–72. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-28044-3_5.

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Leprince-Wang, Yamin. "ZnO-Nanowire-Based Nanogenerators: Principle, Characterization and Device Fabrication." In Piezoelectric ZnO Nanostructure for Energy Harvesting, 65–103. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119007425.ch4.

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Darshan, B. A., Kumar E. Dushyantha, H. S. Jithendra, A. M. Raghavendra, Kumar M. S. Praveen, and B. S. Madhukar. "Flexible Piezoelectric Nanogenerator: PVDF-CsPbBr3 Nanocomposite." In Springer Proceedings in Physics, 121–29. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58868-7_14.

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Wazed Ali, S., and Satyaranjan Bairagi. "Flexible Piezoelectric Nanogenerator Composed of Electrospun Nanofibrous Web." In Fundamentals of Nano–Textile Science, 31–49. New York: Apple Academic Press, 2022. http://dx.doi.org/10.1201/9781003277316-3.

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Singh, Varun Pratap, Ayush Dwivedi, Ashish Karn, Ashwani Kumar, Subhash Singh, Shubham Srivastava, and Kashika Srivastava. "Nanomanufacturing and Design of High-Performance Piezoelectric Nanogenerator for Energy Harvesting." In Nanomanufacturing and Nanomaterials Design, 241–72. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003220602-15.

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Zagabathuni, Aparna, and Subramani Kanagaraj. "Development of Piezoelectric Nanogenerator Based on Micro/Nanofabrication Techniques and Its Application on Medical Devices." In Advanced Micro- and Nano-manufacturing Technologies, 225–44. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3645-5_10.

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Bhunia, R. "Piezoelectric Materials-based Nanogenerators." In Materials Research Foundations, 61–116. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644902097-3.

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With the progression of human civilization, the growing demands of smart electronics devices have compelled us to think about some effective alternative energy sources which can deliver the required power to these devices. Currently, flexible, lightweight, sustainable power sources can be alternatives to fulfill the demands. Piezoelectric nanogenerators are favorable candidates because they can be integrated with these portable personal electronic devices. A remarkable advancement in nanogenerators has been achieved in the synthesis process, energy conversion performance, environmental pollution due to conventional chemical batteries, and adaptability. This chapter presents the possibilities and implementation of piezoelectric materials for nanogenerator fabrication. This chapter would help the readers to get a clear perception of this topic.
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Conference papers on the topic "Piezoelectric nanogenerators"

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Zhang, Jiaqin, Chen Liu, Pengjun Wu, Xingyu Liao, Jialing Fan, Weiwei Feng, Yongting Cui, et al. "Adjustable ZnO nanoarrays/PVDF-HFP hybrid piezoelectric nanogenerators." In 2021 International Conference on Optoelectronic Materials and Devices, edited by Yuan Lu, Youlin Gu, and Siting Chen. SPIE, 2022. http://dx.doi.org/10.1117/12.2628659.

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Galos, Richard, Xi Chen, and Yong Shi. "Ultra Low Power Energy Storage Circuit for Piezoelectric Nanogenerators." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48734.

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MEMS and NEMs devices benefit many applications due to their unique performance and tiny size. We have researched replacing components of a Wireless Sensor Network (WSN) mote with several such devices. In this paper, we present an energy conversion and storage circuit that can be used with piezoelectric nanogenerators for self powered motes. Energy from external vibration or environmental acoustics is capacitively stored and released at certain time intervals according to the application. Stored and lost power is compared against a detailed WSN mote power budget to size the generator and capacitor.
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Han, Bing, Xiaohui Ning, Qingling Meng, Jin Yan, Chenchen Xie, Ran Ding, and Zuobin Wang. "High output piezoelectric composite nanogenerators composed of FAPbBr3-PVDF." In 2017 IEEE International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale (3M-NANO). IEEE, 2017. http://dx.doi.org/10.1109/3m-nano.2017.8286321.

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Galos, Richard, Yong Shi, Zhongjing Ren, and Hao Sun. "Electrical Impedance Matching of PZT NanoGenerators." In ASME 2017 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/detc2017-67981.

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PZT nanofibers are piezoelectric and can produce a relatively high electrical output under strain that is useful for self-powered nanogenerators. To obtain maximum power output from these devices, their internal impedance needs to be matched with their applicable load impedance. Electrical impedance measurements of PZT nanofibers were performed using a variety of methods over a frequency spectrum ranging from DC to 3.0 GHz. These methods include Conductive AFM and Scanning Microwave Impedance Microscopy. Nanofibers formed by electro-spinning with diameters ranging from 3 to 150 nm were collected and measured. The nanofiber impedance was extremely high at low frequency, decreased considerably at higher frequency and varied with nanofiber diameter as well. The results are applicable for the analysis of many types of nanogenerators and nanosensors including those produced at Stevens.
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Bouhamed, Ayda, Ajay, Yudi Shi, Slim Naifar, Jose Roberto Bautista-Quijano, and Olfa Kanoun. "Carbon nanotubes for high performance flexible piezoelectric polymer composite nanogenerators." In 2019 5th International Conference on Nanotechnology for Instrumentation and Measurement (NanofIM). IEEE, 2019. http://dx.doi.org/10.1109/nanofim49467.2019.9233477.

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Shin, Dong-Myeong, Kyujung Kim, Suck Won Hong, Jin-Woo Oh, Hyung Kook Kim, and Yoon-Hwae Hwang. "Piezoelectric nanogenerators based on ZnO and M13 Bacteriophage nanostructures (Conference Presentation)." In Nanoengineering: Fabrication, Properties, Optics, and Devices XIII, edited by Eva M. Campo, Elizabeth A. Dobisz, and Louay A. Eldada. SPIE, 2016. http://dx.doi.org/10.1117/12.2236873.

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Vakulov, Zakhar E., Oleg I. Il'in, Marina V. Il'ina, Vladislav O. Ageev, Viktor V. Petrov, and Oleg A. Ageev. "Lithium Niobate Films for Piezoelectric Nanogenerators Based on Hybrid Carbon Nanostructures." In 2019 IEEE International Conference on Electrical Engineering and Photonics (EExPolytech). IEEE, 2019. http://dx.doi.org/10.1109/eexpolytech.2019.8906880.

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Oshman, Christopher, Julie Chauvin, Charles Opoku, Abhishek S. Dahiya, Daniel Alquier, Marc Lethiecq, Nicolas Camara, and Guylaine Poulin-Vittrant. "Energy Harvesting Using Galvanically Synthesized Piezoelectric ZnO Nanorods on Flexible Polymer Film." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52259.

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This paper reports advancement in bringing flexible piezoelectric nanogenerators (NGs) closer to being realized in a commercial market. We have adopted a method to synthesize piezoelectric ZnO nanorods (NRs) on any electrically conductive surface without a seed layer or a specially selected substrate with matching lattice spacing. By contacting a metal with a dissimilar electro-negativity, a galvanic cell is created in the electrolyte growth medium. We have demonstrated the performance of the as grown NRs on a thin NG using common PET film. The device produced voltages in excess of three times higher than a parallel fabricated reference sample under bending loads.
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Fortunato, M., A. Rinaldi, A. Tamburrano, G. De Bellis, T. Dikonimos, N. Lisi, and M. S. Sarto. "Graphene -Gold Electrodes for Flexible Nanogenerators Based on Porous Piezoelectric PVDF Films." In 2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO). IEEE, 2018. http://dx.doi.org/10.1109/nano.2018.8626307.

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Lu, L., N. Jamond, J. Eymerv, E. Lefeuvre, L. Mancini, L. Larzeau, A. Madouri, et al. "Nanogenerators based on piezoelectric GaN nanowires grown by PA-MBE and MOCVD." In 2018 IEEE 18th International Conference on Nanotechnology (IEEE-NANO). IEEE, 2018. http://dx.doi.org/10.1109/nano.2018.8626416.

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Reports on the topic "Piezoelectric nanogenerators"

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Wang, Zhong L. Piezoelectric Nanogenerators for Self-Powered Nanosystems and Nanosensors. Fort Belvoir, VA: Defense Technical Information Center, May 2013. http://dx.doi.org/10.21236/ada587995.

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Armas, J. A. Morphological and Electrical Properties of P(VDF-TrFE) Piezoelectric Nanogenerators Modified with High Aspect Ratio Fillers. Office of Scientific and Technical Information (OSTI), October 2018. http://dx.doi.org/10.2172/1476201.

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