Articoli di riviste: "ENERGY HARVESTING APPLICATIONS"

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Pakrashi, Vikram, e Grzegorz Litak. "Energy harvesting and applications". European Physical Journal Special Topics 228, n. 7 (agosto 2019): 1535–36. http://dx.doi.org/10.1140/epjst/e2019-900118-y.

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Gayakawad, Kavyashree C., Akshaykumar Gaonkar, B. Goutami e Vinayak P. Miskin. "Acoustic Energy Harvesting Using Piezoelectric Effect for Various Low Power Applications". Bonfring International Journal of Research in Communication Engineering 6, Special Issue (30 novembre 2016): 24–29. http://dx.doi.org/10.9756/bijrce.8194.

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Elsheikh, Ammar. "Bistable Morphing Composites for Energy-Harvesting Applications". Polymers 14, n. 9 (5 maggio 2022): 1893. http://dx.doi.org/10.3390/polym14091893.

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Bistable morphing composites have shown promising applications in energy harvesting due to their capabilities to change their shape and maintain two different states without any external loading. In this review article, the application of these composites in energy harvesting is discussed. Actuating techniques used to change the shape of a composite structure from one state to another is discussed. Mathematical modeling of the dynamic behavior of these composite structures is explained. Finally, the applications of artificial-intelligence techniques to optimize the design of bistable structures and to predict their response under different actuating schemes are discussed.

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Gordón, Carlos, Fabián Salazar, Cristina Gallardo e Julio Cuji. "Storage Systems for Energy Harvesting Applications". IOP Conference Series: Earth and Environmental Science 1141, n. 1 (1 febbraio 2023): 012009. http://dx.doi.org/10.1088/1755-1315/1141/1/012009.

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Abstract Currently, the use of energy from the environment to generate electricity has triggered applications like Energy Harvesting because it is an ecological and autonomous energy that can be used in countless applications, the disadvantage of these systems is the storage system so in this research, a literature review of the use of storage technologies for their implementation in energy Harvesting systems has been carried out. The main objective is to evaluate the performance of the soul-saving systems by making a comparison with existing batteries on the market, with an analysis of the modelling and simulation through Wolfram System Modeler where it allows to understand the behavior of the charging and unchanging processes from the results obtained in energy harvesting systems previously developed by students of the Technical University of Ambato obtaining parameters involved in them to test the Energy Harvesting system with different batteries and thus, achieve greater energy re-collection and storage. These results are very promising because it has been possible to demonstrate by simulation and measurement that the batteries contained in their composition are suitable for Energy Harvesting systems.

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Suzuki, Yuji. "Energy Harvesting". Journal of The Institute of Image Information and Television Engineers 64, n. 2 (2010): 198–200. http://dx.doi.org/10.3169/itej.64.198.

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Roscow, J., Y. Zhang, J. Taylor e C. R. Bowen. "Porous ferroelectrics for energy harvesting applications". European Physical Journal Special Topics 224, n. 14-15 (novembre 2015): 2949–66. http://dx.doi.org/10.1140/epjst/e2015-02600-y.

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Wang, Zhao, Xumin Pan, Yahua He, Yongming Hu, Haoshuang Gu e 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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Horowitz, Stephen B., e Mark Sheplak. "Aeroacoustic applications of acoustic energy harvesting". Journal of the Acoustical Society of America 134, n. 5 (novembre 2013): 4155. http://dx.doi.org/10.1121/1.4831230.

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Gladden, Josh R. "Elastic energy harvesting: Materials and applications". Journal of the Acoustical Society of America 141, n. 5 (maggio 2017): 3689. http://dx.doi.org/10.1121/1.4988030.

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Chiriac, H., M. Ţibu, N. Lupu, I. Skorvanek e T. A. Óvári. "Nanocrystalline ribbons for energy harvesting applications". Journal of Applied Physics 115, n. 17 (7 maggio 2014): 17A320. http://dx.doi.org/10.1063/1.4864437.

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Takacs, A., H. Aubert, L. Despoisse e S. Fredon. "Microwave energy harvesting for satellite applications". Electronics Letters 49, n. 11 (maggio 2013): 722–24. http://dx.doi.org/10.1049/el.2013.0372.

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Dong, Lin, Michael Grissom e Frank T. Fisher. "Resonant frequency of mass-loaded membranes for vibration energy harvesting applications". AIMS Energy 3, n. 3 (2015): 344–59. http://dx.doi.org/10.3934/energy.2015.3.344.

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Chen, Yingying, Bo Liu, Hongbo Liu e Yudong Yao. "VLC-based Data Transfer and Energy Harvesting Mobile System". Journal of Ubiquitous Systems and Pervasive Networks 15, n. 01 (1 marzo 2021): 01–09. http://dx.doi.org/10.5383/juspn.15.01.001.

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This paper explores a low-cost portable visible light communication (VLC) system to support the increasing needs of lightweight mobile applications. VLC grows rapidly in the past decade for many applications (e.g., indoor data transmission, human sensing, and visual MIMO) due to its RF interference immunity and inherent high security. However, most existing VLC systems heavily rely on fixed infrastructures with less adaptability to emerging lightweight mobile applications. This work proposes Light Storage, a portable VLC system takes the advantage of commercial smartphone flashlights as the transmitter and a solar panel equipped with both data reception and energy harvesting modules as the receiver. Light Storage can achieve concurrent data transmission and energy harvesting from the visible light signals. It develops multi-level light intensity data modulation to increase data throughput and integrates the noise reduction functionality to allow portability under various lighting conditions. The system supports synchronization together with adaptive error correction to overcome both the linear and non-linear signal offsets caused by the low time-control ability from the commercial smartphones. Finally, the energy harvesting capability in Light Storage provides sufficient energy support for efficient short range communication. Light Storage is validated in both indoor and outdoor environments and can achieve over 98% data decoding accuracy, demonstrating the potential as an important alternative to support low-cost and portable short range communication.

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Joseph, A. D. "Energy harvesting projects". IEEE Pervasive Computing 4, n. 1 (gennaio 2005): 69–71. http://dx.doi.org/10.1109/mprv.2005.8.

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Dawidowicz, Edward. "Wind Energy Harvesting for Low Power Applications". SAE International Journal of Aerospace 1, n. 1 (11 novembre 2008): 883–86. http://dx.doi.org/10.4271/2008-01-2864.

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Miller, John R., e Sue Butler. "Electrochemical Capacitor Performance in Energy Harvesting Applications". ECS Transactions 16, n. 1 (18 dicembre 2019): 3–11. http://dx.doi.org/10.1149/1.2985622.

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Wardlaw, J. L., e A. I. Karsilayan. "Self-Powered Rectifier for Energy Harvesting Applications". IEEE Journal on Emerging and Selected Topics in Circuits and Systems 1, n. 3 (settembre 2011): 308–20. http://dx.doi.org/10.1109/jetcas.2011.2164975.

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Adrian, STOICESCU, DEACONU Marius, HRITCU Romeo Dorin, NECHIFOR Cristian Valentin e VILAG Valeriu Alexandru. "Vibration Energy Harvesting Potential for Turbomachinery Applications". INCAS BULLETIN 10, n. 1 (11 marzo 2018): 135–48. http://dx.doi.org/10.13111/2066-8201.2018.10.1.13.

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Beeby, S. P., M. J. Tudor e N. M. White. "Energy harvesting vibration sources for microsystems applications". Measurement Science and Technology 17, n. 12 (26 ottobre 2006): R175—R195. http://dx.doi.org/10.1088/0957-0233/17/12/r01.

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Jafar-Zanjani, Samad, Mohammad Mahdi Salary e Hossein Mosallaei. "Metafabrics for Thermoregulation and Energy-Harvesting Applications". ACS Photonics 4, n. 4 (10 aprile 2017): 915–27. http://dx.doi.org/10.1021/acsphotonics.6b01005.

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Ylli, K., D. Hoffmann, P. Becker, A. Willmann, B. Folkmer e Y. Manoli. "Human Motion Energy Harvesting for AAL Applications". Journal of Physics: Conference Series 557 (27 novembre 2014): 012024. http://dx.doi.org/10.1088/1742-6596/557/1/012024.

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Gkoumas, Konstantinos, Oriana De Gaudenzi e Francesco Petrini. "Energy Harvesting Applications in Transportation Infrastructure Networks". Procedia - Social and Behavioral Sciences 48 (2012): 1097–107. http://dx.doi.org/10.1016/j.sbspro.2012.06.1086.

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Messineo, Antonio, Andrea Alaimo, Mario Denaro e Dario Ticali. "Piezoelectric Bender Transducers for Energy Harvesting Applications". Energy Procedia 14 (2012): 39–44. http://dx.doi.org/10.1016/j.egypro.2011.12.894.

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Wood, O. J., C. A. Featherston, D. Kennedy, Mark J. Eaton e Rhys Pullin. "Optimised Vibration Energy Harvesting for Aerospace Applications". Key Engineering Materials 518 (luglio 2012): 246–60. http://dx.doi.org/10.4028/www.scientific.net/kem.518.246.

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Accurate knowledge regarding the ongoing condition of an aircraft’s structural condition together with future life predictions enable optimal use of material, hence reducing mass, cost and environmental effects. Previous work by the authors has demonstrated the potential for using energy harvested from vibrating aircraft panels to power a self contained health monitoring system based on the use of wireless sensor nodes for an aircraft structure. However the system proposed was far from optimal. Research is being undertaken to investigate the various factors affecting the power output of such a system, including the design of the harvesters used (length, width, number of layers), their positioning and their orientation. The work presented in this paper enables the determination of the optimised positions for a series of harvesters on a representative aircraft panel, based on the use of shape functions for the various modes of vibration over the expected frequency range, to derive a function related to power output which is then optimised. A series of recommendations are made.

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Zucca, Mauro, Oriano Bottauscio, Cinzia Beatrice e Fausto Fiorillo. "Modeling Amorphous Ribbons in Energy Harvesting Applications". IEEE Transactions on Magnetics 47, n. 10 (ottobre 2011): 4421–24. http://dx.doi.org/10.1109/tmag.2011.2158301.

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Bradai, S., S. Naifar, C. Viehweger e O. Kanoun. "Electromagnetic Vibration Energy Harvesting for Railway Applications". MATEC Web of Conferences 148 (2018): 12004. http://dx.doi.org/10.1051/matecconf/201814812004.

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Safe localization of trains via GPS and wireless sensors is essential for railway traffic supervision. Especially for freight trains and because normally no power source is available on the wagons, special solutions for energy supply have to be developed based on energy harvesting techniques. Since vibration is available in this case, it provides an interesting source of energy. Nevertheless, in order to have an efficient design of the harvesting system, the existing vibration needs to be investigated. In this paper, we focus on the characterization of vibration parameters in railway application. We propose an electromagnetic vibration converter especially developed to this application. Vibration profiles from a train traveling between two German cities were measured using a data acquisition system installed on the train’s wagon. Results show that the measured profiles present multiple frequency signals in the range of 10 to 50 Hz and an acceleration of up to 2 g. A prototype for a vibration converter is designed taking into account the real vibration parameters, robustness and integrability requirements. It is based on a moving coil attached to a mechanical spring. For the experimental emulation of the train vibrations, a shaker is used as an external artificial vibration source controlled by a laser sensor in feedback. A maximum voltage of 1.7 V peak to peak which corresponds to a maximum of 10 mW output power where the applied excitation frequency is close to the resonant frequency of the converter which corresponds to 27 Hz.

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Muto, Andrew, Jian Yang, Bed Poudel, Zhifeng Ren e Gang Chen. "Skutterudite Unicouple Characterization for Energy Harvesting Applications". Advanced Energy Materials 3, n. 2 (24 settembre 2012): 245–51. http://dx.doi.org/10.1002/aenm.201200503.

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Bhatnagar, Vikrant, e Philip Owende. "Energy harvesting for assistive and mobile applications". Energy Science & Engineering 3, n. 3 (17 febbraio 2015): 153–73. http://dx.doi.org/10.1002/ese3.63.

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Thakre, Atul, Ajeet Kumar, Hyun-Cheol Song, Dae-Yong Jeong e Jungho Ryu. "Pyroelectric Energy Conversion and Its Applications—Flexible Energy Harvesters and Sensors". Sensors 19, n. 9 (10 maggio 2019): 2170. http://dx.doi.org/10.3390/s19092170.

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Among the various forms of natural energies, heat is the most prevalent and least harvested energy. Scavenging and detecting stray thermal energy for conversion into electrical energy can provide a cost-effective and reliable energy source for modern electrical appliances and sensor applications. Along with this, flexible devices have attracted considerable attention in scientific and industrial communities as wearable and implantable harvesters in addition to traditional thermal sensor applications. This review mainly discusses thermal energy conversion through pyroelectric phenomena in various lead-free as well as lead-based ceramics and polymers for flexible pyroelectric energy harvesting and sensor applications. The corresponding thermodynamic heat cycles and figures of merit of the pyroelectric materials for energy harvesting and heat sensing applications are also briefly discussed. Moreover, this study provides guidance on designing pyroelectric materials for flexible pyroelectric and hybrid energy harvesting.

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Garcia, Ephrahim, Michael W. Shafer, Matthew Bryant, Alexander Schlichting e Boris Kogan. "Insight and Applications in Energy Harvesting from Bullets to Birds". Advances in Science and Technology 83 (settembre 2012): 59–68. http://dx.doi.org/10.4028/www.scientific.net/ast.83.59.

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Power requirements for microelectronics continue a downward trend and power production from vibrational power harvesting is ever increasing. The result is a convergence of technology that will allow for previously unattainable systems, such as infinite life wireless sensor nodes, health monitoring systems, and environmental monitoring tags, among others. The Laboratory of Intelligent Machine Systems at Cornell University has made many significant contributions to this field, pioneering new applications of piezoelectric energy harvesting, as well as contributing to harvesting circuitry and mechanical design theory. In this work, we present a variety of new applications for energy harvesting technology, including infinite life avian based bio-loggers, flutter induced vibrational wind power, and in-flight energy harvesting in munitions. We also present theoretical contributions to the field including an energy harvester beam design guide and multisource energy harvesting circuitry.

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Kanboz, Beyza, e Merih Palandoken. "UWB Microstrip Patch Antenna Design for Energy Harvesting Applications". International Journal of Advanced Natural Sciences and Engineering Researches 7, n. 4 (4 maggio 2023): 115–18. http://dx.doi.org/10.59287/ijanser.565.

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RF energy harvesting systems, which are the receiver part of Wireless Power Transfer (WPT), have gained significant development in recent years. For maximum energy acquisition over a wide frequency range, such as to provide power to small handheld devices like cell phones, tablets, smart watches, and other smart devices, wideband and compact antennas are desired. RF systems are expected to cover different frequency bands, such as 2.4 GHz, 5.1 GHz, 5.8 GHz (Bluetooth/Wi-Fi), 2.3 GHz, 2.5 GHz, 3.5 GHz, 5 GHz (WiMAX), for energy harvesting. For such an RF harvesting system, the antenna is desired to have a wide bandwidth, good gain, and an omnidirectional radiation pattern. Energy harvesting devices refer to designs that integrate production and storage. For instance, radio frequency energy sources contain a large amount of electromagnetic energy in the environment, and with RF energy harvesting systems, a portion of this electromagnetic energy can be collected and converted into usable DC voltage. Microstrip patch antennas are very good alternatives for energy harvesting applications because they are cost-effective, compact in size and weight, flat in structure, and highly repeatable. This paper presents a microstrip patch antenna with a bandwidth of 3.9 GHz in the 3.4 to 7.3 GHz range for UWB applications. The antenna design has a gain value of 3.28dBi at the numerically calculated resonance frequency of 4.9 GHz and generally covers frequencies used for electronic device communication such as Wi-Fi 5 GHz and WiMAX. The proposed antenna design has gain values that are allowed to be used for RF energy harvesting applications.

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Liang, J. R., e W. H. Liao. "Piezoelectric Energy Harvesting and Dissipation on Structural Damping". Journal of Intelligent Material Systems and Structures 20, n. 5 (28 novembre 2008): 515–27. http://dx.doi.org/10.1177/1045389x08098194.

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This article aims to provide a comparative study on the functions of piezoelectric energy harvesting, dissipation, and their effects on the structural damping of vibrating structures. Energy flow in piezoelectric devices is discussed. Detailed modeling of piezoelectric materials and devices are provided to serve as a common base for both analyses of energy harvesting and dissipation. Based on these foundations, two applications of standard energy harvesting (SEH) and resistive shunt damping (RSD) are investigated and compared. Furthermore, in the application of synchronized switch harvesting on inductor (SSHI), it is shown that the two functions of energy harvesting and dissipation are coexistent. Both of them bring out structural damping. Further analyses and optimization for the SSHI technique are performed.

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Cao, Dongxing, Junru Wang, Xiangying Guo, S. K. Lai e Yongjun Shen. "Recent advancement of flow-induced piezoelectric vibration energy harvesting techniques: principles, structures, and nonlinear designs". Applied Mathematics and Mechanics 43, n. 7 (luglio 2022): 959–78. http://dx.doi.org/10.1007/s10483-022-2867-7.

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AbstractEnergy harvesting induced from flowing fluids (e.g., air and water flows) is a well-known process, which can be regarded as a sustainable and renewable energy source. In addition to traditional high-efficiency devices (e.g., turbines and watermills), the micro-power extracting technologies based on the flow-induced vibration (FIV) effect have sparked great concerns by virtue of their prospective applications as a self-power source for the microelectronic devices in recent years. This article aims to conduct a comprehensive review for the FIV working principle and their potential applications for energy harvesting. First, various classifications of the FIV effect for energy harvesting are briefly introduced, such as vortex-induced vibration (VIV), galloping, flutter, and wake-induced vibration (WIV). Next, the development of FIV energy harvesting techniques is reviewed to discuss the research works in the past three years. The application of hybrid FIV energy harvesting techniques that can enhance the harvesting performance is also presented. Furthermore, the nonlinear designs of FIV-based energy harvesters are reported in this study, e.g., multi-stability and limit-cycle oscillation (LCO) phenomena. Moreover, advanced FIV-based energy harvesting studies for fluid engineering applications are briefly mentioned. Finally, conclusions and future outlook are summarized.

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Tsai, Bor Jang, e Jung Chi Wang. "Rotation Energy Harvesting Device". Applied Mechanics and Materials 548-549 (aprile 2014): 895–900. http://dx.doi.org/10.4028/www.scientific.net/amm.548-549.895.

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An innovative approach to energy harvesting is to integrate the capture of fragmented energy with micro-electromechanical system (MEMS) to achieve the power self-sufficiency needed for the circuit to function as an autonomous system. This study used a micro-motor as a micro-generator for capturing not only fragmented energy, but also instantaneous energy. The experimental results confirm that energy can be captured from uncollected daily rotational mechanical energy with sufficiently high efficiency and low cost to replace the conventional battery power used in wireless sensors. Applications of this technology in green buildings can not only reduce the energy wasted by wiring, but can also improve internal aesthetics.

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A. Rahim, Mohamad Kamal, Bashar A. F. Esmail, Nur Syahirah M. Yaziz, Noor Asmawati Samsuri, Noor Asniza Murad, Osman Ayop, Farid Zubir, Huda A. Majid e Norsaidah Muhamad Nadzir. "Flexible Rectenna for Energy Harvesting System". ELEKTRIKA- Journal of Electrical Engineering 21, n. 1 (20 aprile 2022): 73–77. http://dx.doi.org/10.11113/elektrika.v21n1.375.

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This paper presents a flexible rectenna for RF energy harvesting application. The textile wideband antenna is designed using CST software. The Fleece and Shieldit fabrics are used as substrate and conductive material, respectively. The antenna is fabricated and its measurement performances are described in terms of reflection coefficient and the radiation pattern is measured. Then, the rectifier circuit is designed and simulated using ADS software and the integration between antenna and rectifier (rectenna) is achieved using the same software. The flexible rectenna is experimentally verified at different distances from the RF source. The highest measured DC output voltage is 35 mV at a distance of 0.5 m. The system harvests DC output voltage successfully even though it only produces a small value. This system can be improved more and used for obtaining continuous energy for future wearable applications.

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A. Rahim, Mohamad Kamal, Bashar A. F. Esmail, Nur Syahirah M. Yaziz, Noor Asmawati Samsuri, Noor Asniza Murad, Osman Ayop, Farid Zubir, Huda A. Majid e Norsaidah Muhamad Nadzir. "Flexible Rectenna for Energy Harvesting System". ELEKTRIKA- Journal of Electrical Engineering 21, n. 1 (20 aprile 2022): 73–77. http://dx.doi.org/10.11113/elektrika.v21n1.375.

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This paper presents a flexible rectenna for RF energy harvesting application. The textile wideband antenna is designed using CST software. The Fleece and Shieldit fabrics are used as substrate and conductive material, respectively. The antenna is fabricated and its measurement performances are described in terms of reflection coefficient and the radiation pattern is measured. Then, the rectifier circuit is designed and simulated using ADS software and the integration between antenna and rectifier (rectenna) is achieved using the same software. The flexible rectenna is experimentally verified at different distances from the RF source. The highest measured DC output voltage is 35 mV at a distance of 0.5 m. The system harvests DC output voltage successfully even though it only produces a small value. This system can be improved more and used for obtaining continuous energy for future wearable applications.

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Sherazi, Hafiz Husnain Raza, Dimitrios Zorbas e Brendan O’Flynn. "A Comprehensive Survey on RF Energy Harvesting: Applications and Performance Determinants". Sensors 22, n. 8 (13 aprile 2022): 2990. http://dx.doi.org/10.3390/s22082990.

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There has been an explosion in research focused on Internet of Things (IoT) devices in recent years, with a broad range of use cases in different domains ranging from industrial automation to business analytics. Being battery-powered, these small devices are expected to last for extended periods (i.e., in some instances up to tens of years) to ensure network longevity and data streams with the required temporal and spatial granularity. It becomes even more critical when IoT devices are installed within a harsh environment where battery replacement/charging is both costly and labour intensive. Recent developments in the energy harvesting paradigm have significantly contributed towards mitigating this critical energy issue by incorporating the renewable energy potentially available within any environment in which a sensor network is deployed. Radio Frequency (RF) energy harvesting is one of the promising approaches being investigated in the research community to address this challenge, conducted by harvesting energy from the incident radio waves from both ambient and dedicated radio sources. A limited number of studies are available covering the state of the art related to specific research topics in this space, but there is a gap in the consolidation of domain knowledge associated with the factors influencing the performance of RF power harvesting systems. Moreover, a number of topics and research challenges affecting the performance of RF harvesting systems are still unreported, which deserve special attention. To this end, this article starts by providing an overview of the different application domains of RF power harvesting outlining their performance requirements and summarizing the RF power harvesting techniques with their associated power densities. It then comprehensively surveys the available literature on the horizons that affect the performance of RF energy harvesting, taking into account the evaluation metrics, power propagation models, rectenna architectures, and MAC protocols for RF energy harvesting. Finally, it summarizes the available literature associated with RF powered networks and highlights the limitations, challenges, and future research directions by synthesizing the research efforts in the field of RF energy harvesting to progress research in this area.

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Park, Jaehyun, Ganapati Bhat, Anish NK, Cemil S. Geyik, Umit Y. Ogras e Hyung Gyu Lee. "Energy per Operation Optimization for Energy-Harvesting Wearable IoT Devices". Sensors 20, n. 3 (30 gennaio 2020): 764. http://dx.doi.org/10.3390/s20030764.

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Wearable internet of things (IoT) devices can enable a variety of biomedical applications, such as gesture recognition, health monitoring, and human activity tracking. Size and weight constraints limit the battery capacity, which leads to frequent charging requirements and user dissatisfaction. Minimizing the energy consumption not only alleviates this problem, but also paves the way for self-powered devices that operate on harvested energy. This paper considers an energy-optimal gesture recognition application that runs on energy-harvesting devices. We first formulate an optimization problem for maximizing the number of recognized gestures when energy budget and accuracy constraints are given. Next, we derive an analytical energy model from the power consumption measurements using a wearable IoT device prototype. Then, we prove that maximizing the number of recognized gestures is equivalent to minimizing the duration of gesture recognition. Finally, we utilize this result to construct an optimization technique that maximizes the number of gestures recognized under the energy budget constraints while satisfying the recognition accuracy requirements. Our extensive evaluations demonstrate that the proposed analytical model is valid for wearable IoT applications, and the optimization approach increases the number of recognized gestures by up to 2.4× compared to a manual optimization.

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Liu, Long, Xinge Guo, Weixin Liu e Chengkuo Lee. "Recent Progress in the Energy Harvesting Technology—From Self-Powered Sensors to Self-Sustained IoT, and New Applications". Nanomaterials 11, n. 11 (5 novembre 2021): 2975. http://dx.doi.org/10.3390/nano11112975.

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With the fast development of energy harvesting technology, micro-nano or scale-up energy harvesters have been proposed to allow sensors or internet of things (IoT) applications with self-powered or self-sustained capabilities. Facilitation within smart homes, manipulators in industries and monitoring systems in natural settings are all moving toward intellectually adaptable and energy-saving advances by converting distributed energies across diverse situations. The updated developments of major applications powered by improved energy harvesters are highlighted in this review. To begin, we study the evolution of energy harvesting technologies from fundamentals to various materials. Secondly, self-powered sensors and self-sustained IoT applications are discussed regarding current strategies for energy harvesting and sensing. Third, subdivided classifications investigate typical and new applications for smart homes, gas sensing, human monitoring, robotics, transportation, blue energy, aircraft, and aerospace. Lastly, the prospects of smart cities in the 5G era are discussed and summarized, along with research and application directions that have emerged.

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Bakir, Mehmet, Muharrem Karaaslan, Furkan Dincer, Oguzhan Akgol e Cumali Sabah. "Electromagnetic energy harvesting and density sensor application based on perfect metamaterial absorber". International Journal of Modern Physics B 30, n. 20 (10 agosto 2016): 1650133. http://dx.doi.org/10.1142/s0217979216501332.

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The proposed study presents an electromagnetic (EM) energy harvesting and density sensor application based on a perfect metamaterial absorber (MA) in microwave frequency regime. In order to verify the absorption behavior of the structure, its absorption behavior is experimentally tested along with the energy harvesting and sensing abilities. The absorption value is experimentally found 0.9 at the resonance frequency of 4.75 GHz. In order to harvest the EM energy, chips resistors are used. In addition, the suggested model is analyzed for its dependency on polarization angles. The results show that the perfect MA can be easily and efficiently used for EM energy harvesting applications. Moreover, as an additional feature of the model, we also realized a density sensor application. It can be seen that this structure can be used as a multi-functional device and configured for many other sensing applications.

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41

Herawan, Safarudin Gazali, Said Abi Syahputra, Ernie Mat Tokit, Fatimah Al-Zahra Mohd Sa’at e Mohamad Afzanizam Mohd Rosli. "Energy harvesting applications using 3D-printed coreless generator". IOP Conference Series: Materials Science and Engineering 1082, n. 1 (1 febbraio 2021): 012004. http://dx.doi.org/10.1088/1757-899x/1082/1/012004.

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42

CAO, WENYING, WEIDONG YU e ZHAOLING LI. "Energy harvesting from human motions for wearable applications". Industria Textila 69, n. 05 (1 novembre 2018): 390–93. http://dx.doi.org/10.35530/it.069.05.1531.

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Harvesting biomechanical energy from human’s movement is an alternative solution to effectively power the wearable electronics. In this paper, two impact-driven piezoelectric energy harvesters were developed which can be integrated within human shoe-soles and also can be tailored to integrate in commercial carpets or outdoor roadway to harvest the massive mechanical energy from the passing vehicles or people crowds at low frequencies. For a comprehensive study, two buckling types of PVDF harvesters were selected and tested. It has been shown that the mechanical responses of the arch type prototype and the C type prototype are different. In addition, the mechanical response of the C type can be affected by the vertical height of the C type. The peak-peak voltage of the C type increases with the vertical height of the C type decreases. The peak-peak voltage of arch type is almost the same with the C type when the vertical height of which is 25 mm. The stability of the output voltage of the arch type is the worst when compared with that of the three C types. The stability of the output voltage of the C type when the vertical height of which is 25 mm is the worst among the three different vertical heights

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43

Krawczak, P. "Electro-active polymers for wearable energy harvesting applications". Express Polymer Letters 11, n. 9 (2017): 673. http://dx.doi.org/10.3144/expresspolymlett.2017.65.

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44

VELI, Yelda, e Alexandru M. MOREGA. "ELECTROMECHANICAL CONVERTER FOR ENERGY HARVESTING IN MEDICAL APPLICATIONS". ACTUALITĂŢI ŞI PERSPECTIVE ÎN DOMENIUL MAŞINILOR ELECTRICE (ELECTRIC MACHINES, MATERIALS AND DRIVES - PRESENT AND TRENDS) 2021, n. 1 (19 novembre 2021): 1–7. http://dx.doi.org/10.36801/apme.2021.1.11.

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The paper analyzes an electromechanical converter used to collect the mechanical energy provided by the field of deformation of the walls of an arterial vessel as a result of the pulsating flow of blood through it. The structure of the converter is based on the flow of a strong electrically conductive fluid through channels in the magnetic field provided by the permanent magnets placed concentrically along the device and the arterial vessel, the electric field occurring at the electrodes. Numerical analysis neglects the electrical conductivity of the blood. The device has a wide range of applicability and can be adapted to meet industry requirements.

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45

Bowen, C. R., J. Taylor, E. LeBoulbar, D. Zabek, A. Chauhan e R. Vaish. "Pyroelectric materials and devices for energy harvesting applications". Energy Environ. Sci. 7, n. 12 (2014): 3836–56. http://dx.doi.org/10.1039/c4ee01759e.

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46

Thang, Kieu Vu, Nguyen Thanh Tung e Ewald Janssens. "MICROWAVE METAMATERIAL-BASED SUPERLENS FOR ENERGY HARVESTING APPLICATIONS". Vietnam Journal of Science and Technology 56, n. 6 (17 dicembre 2018): 698. http://dx.doi.org/10.15625/2525-2518/56/6/12722.

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Superlens imaging has been known as one of the most intriguing applications of metamaterials due to its capability of sub-wavelength imaging. In this report, we numerically demonstrate the possibility to make an amplifying superlens, which can focus and consequently enhance electromagnetic signals emitted at GHz frequencies. Simulations using the finite integration technique are performed to explore the amplifying mechanism of the proposed superlens. It is found that the focused signals can be considerably intensified at a selected position. The results show potential uses of metamaterial superlenses for future wireless energy transfer devices and novel energy harvesting applications.

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47

Crossley, S., R. A. Whiter e S. Kar-Narayan. "Polymer-based nanopiezoelectric generators for energy harvesting applications". Materials Science and Technology 30, n. 13 (21 luglio 2014): 1613–24. http://dx.doi.org/10.1179/1743284714y.0000000605.

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48

Wielopolski, Mateusz, Katharine E. Linton, Magdalena Marszałek, Murat Gulcur, Martin R. Bryce e Jacques E. Moser. "Harvesting UV photons for solar energy conversion applications". Phys. Chem. Chem. Phys. 16, n. 5 (2014): 2090–99. http://dx.doi.org/10.1039/c3cp54914c.

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49

Peckerar, Martin, Wei Zhao, Zeynep Dilli, Mahsa Dornajafi, Daniel Lowy e Siddharth Potbhare. "(Invited) Supercapacitor/Battery Hybrids for Energy Harvesting Applications". ECS Transactions 41, n. 8 (16 dicembre 2019): 31–35. http://dx.doi.org/10.1149/1.3631483.

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50

Constantinou, Peter, Phil H. Mellor e Paul D. Wilcox. "A Magnetically Sprung Generator for Energy Harvesting Applications". IEEE/ASME Transactions on Mechatronics 17, n. 3 (giugno 2012): 415–24. http://dx.doi.org/10.1109/tmech.2012.2188834.

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