Showing papers on "Energy harvesting published in 2022"
TL;DR: In this article, an arc-shaped piezoelectric sheet between the outer race of rolling bearing and bearing pedestal was installed to scavenge rotational energy from rotating machines.
102 citations
TL;DR: The development of flexible piezoelectric nanogenerators has experienced rapid progress in the past decade and is serving as the technological foundation of future state-of-the-art personalized healthcare as mentioned in this paper .
Abstract: The development of flexible piezoelectric nanogenerators has experienced rapid progress in the past decade and is serving as the technological foundation of future state-of-the-art personalized healthcare. Due to their highly efficient mechanical-to-electrical energy conversion, easy implementation, and self-powering nature, these devices permit a plethora of innovative healthcare applications in the space of active sensing, electrical stimulation therapy, as well as passive human biomechanical energy harvesting to third party power on-body devices. This article gives a comprehensive review of the piezoelectric nanogenerators for personalized healthcare. After a brief introduction to the fundamental physical science of the piezoelectric effect, material engineering strategies, device structural designs, and human-body centered energy harvesting, sensing, and therapeutics applications are also systematically discussed. In addition, the challenges and opportunities of utilizing piezoelectric nanogenerators for self-powered bioelectronics and personalized healthcare are outlined in detail.
91 citations
TL;DR: In this article , the application of bistable morphing composites in energy harvesting is discussed and mathematical modeling of the dynamic behavior of these composite structures is explained, and the applications of artificial-intelligence techniques to optimize the design of Bistable structures and to predict their response under different actuating schemes are discussed.
Abstract: 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.
86 citations
TL;DR: In this article , an arc-shaped piezoelectric sheet between the outer race of rolling bearing and bearing pedestal was installed to scavenge rotational energy from rotating machines.
80 citations
TL;DR: In this paper, a low-frequency rotational electromagnetic energy harvester using a nonlinear magnetic plucking configuration is proposed, where the resetting effect provides a new way to stabilize the output voltage and improve the energy harvesting performance.
76 citations
TL;DR: In this article , the authors summarized the latest progress of thermoelectric materials and devices and discussed multiple strategies for improving the performance of TE materials via regulating carriers and phonons.
75 citations
TL;DR: In this article, the authors summarized the latest progress of thermoelectric materials and devices and discussed multiple strategies for improving the performance of TE materials via regulating carriers and phonons.
75 citations
TL;DR: In this article , a wave-driven liquid-solid TENG was developed to construct a self-powered sensing system for marine environmental monitoring, which has an excellent response (ΔU/Ua = 170 % @ 30 ppm) and is 14 times larger than that of the resistive sensor.
74 citations
74 citations
TL;DR: A comprehensive review of the state-of-the-art progress of multistable vibration energy harvesters is provided in this article , where the authors present critical challenges, perspectives for future research directions about MEHs, and governing models and approximate analytic methods are introduced.
69 citations
TL;DR: In this paper , a review of solar energy harvesting (SEH) technologies for PV self-powered applications is presented, including maximum power point tracking (MPPT) techniques and power management (PM) systems.
TL;DR: In this paper , a low-frequency rotational electromagnetic energy harvester using a nonlinear magnetic plucking configuration is proposed using the novel structure to pluck a cylindroid generating magnet in each rotational motion, which provides a new way to stabilize the output voltage and improve the energy harvesting performance.
TL;DR: In this paper , a breeze-driven triboelectric nanogenerator (BD-TENG) was proposed to efficiently harvest breeze energy in the farmland environment, and the start-up wind speed of the prototype is as low as 3.3 m/s.
TL;DR: In this article, a breeze-driven triboelectric nanogenerator (BD-TENG) was proposed to efficiently harvest breeze energy in the farmland environment, which can be widely used in farmland environments to provide energy for agricultural sensor networks.
TL;DR: In this article , a low-cost, scalable, and facile manufacturing approach based on laser-induced graphene foams is presented to yield a self-powered wireless sensing platform.
Abstract: Practical applications of next-generation stretchable electronics hinge on the development of sustained power supplies to drive highly sensitive on-skin sensors and wireless transmission modules. Although the manufacture of stretchable self-charging power units has been demonstrated by integrating stretchable energy harvesters and power management circuits with energy storage units, they often suffer from low and unstable output power especially under mechanical deformation and human movements, as well as complex and expensive fabrication processes. This work presents a low-cost, scalable, and facile manufacturing approach based on laser-induced graphene foams to yield a self-powered wireless sensing platform. 3D porous foams with high specific surface area and excellent charge transport provide an efficient flow of triboelectric electrons in triboelectric nanogenerators. The surface coating or doping with second laser irradiation on these foams can also form a 3D composite to provide high energy density in micro-supercapacitor arrays. The integration of a triboelectric nanogenerator and power management circuits with micro-supercapacitor arrays can efficiently harvest intermittent mechanical energy from body movements into stable power output. 3D foams and their composites patterned into various geometries conveniently create various deformable sensors on large scale at low cost. The generated stable, yet high, power with adjustable voltage and current outputs drives various stretchable sensors and wireless transmission modules to wirelessly measure pulse, strain, temperature, electrocardiogram, blood pressure, and blood oxygen. The self-powered, wireless, wearable sensing platform paves the way to wirelessly detect clinically relevant biophysical and biochemical signals for early disease diagnostics and healthy aging.
TL;DR: In this article , the state-of-the-art advances on flow-induced vibration energy harvesters in terms of their working principles, categories, enhancement methods, model derivation and calculation methods, influence of interface circuits, and energy harvesting efficiency calculation methods are reviewed.
TL;DR: In this article , a multi-mode stretchable and wearable triboelectric nanogenerator (msw-TENG) is presented for biomechanical energy harvesting and physiological functions sensing.
TL;DR: In this paper, a multi-mode stretchable and wearable triboelectric nanogenerator (msw-TENG) is presented for biomechanical energy harvesting and physiological functions sensing.
TL;DR: In this article , a wearable strain sensor is fabricated by sandwiching the MAGP hydrogels between two dielectric carbon nanotubes (CNTs)/poly(dimethylsiloxane) (PDMS) layers, which can be utilized to monitor delicate and vigorous human motion.
Abstract: Hydrogels that combine the integrated attributes of being adhesive, self-healable, deformable, and conductive show great promise for next-generation soft robotic/energy/electronic applications. Herein, we reported a dual-network polyacrylamide (PAAM)/poly(acrylic acid) (PAA)/graphene (GR)/poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) (MAGP) conductive hydrogel composed of dual-cross-linked PAAM and PAA as well as PEDOT:PSS and GR as a conducting component that combines these features. A wearable strain sensor is fabricated by sandwiching the MAGP hydrogels between two dielectric carbon nanotubes (CNTs)/poly(dimethylsiloxane) (PDMS) layers, which can be utilized to monitor delicate and vigorous human motion. In addition, the hydrogel-based sensor can act as a deformable triboelectric nanogenerator (D-TENG) for harvesting mechanical energy. The D-TENG demonstrates a peak output voltage and current of 141 V and 0.8 μA, respectively. The D-TENG could easily light 52 yellow-light-emitting diodes (LEDs) simultaneously and demonstrated the capability to power small electronics, such as a hygrometer thermometer. This work provides a potential approach for the development of deformable energy sources and self-powered strain sensors.
TL;DR: In this article , a cobalt-based nanoporous carbon (Co-NPC) incorporated polyvinylidene fluoride (PVDF) composite nanofibers (NFs) are proposed as a highly electronegative tribomaterial for boosting the performance of TENGs in the mechanical energy harvesting applications.
01 Jan 2022
TL;DR: In recent years, the internet of things (IoT) has been progressing rapidly with the integration of technologies in various fields, and triboelectric nanogenerator (TENG) technology based on the TENG architecture is one of the latest technologies to be developed.
Abstract: In recent years, the internet of things (IoT) has been progressing rapidly with the integration of technologies in various fields. At this stage, triboelectric nanogenerator (TENG) technology based on the...
TL;DR: In this article , a stretchable asymmetric 3D microstrip antenna with varying 3D configurations for excellent on-body radiation performance was introduced, showing a strain-insensitive resonance, improved stretchability and enhanced peak gain.
TL;DR: In this article , the structure of a spring pendulum is modified using an independent electromagnetic harvesting system to get both the energy harvesting and mitigation of vibration efficacy of the harvester.
Abstract: This work focuses on vibration alleviation and energy harvesting in a dynamical system of a spring-pendulum. The structure of the pendulum is modified using an independent electromagnetic harvesting system. The harvesting depends on the oscillation of a magnet in a coil. An endeavor has been made to get both the energy harvesting and mitigation of vibration efficacy of the harvester. The governing kinematics equations are derived using Lagrange’s equations and are solved asymptotically using the multiple scales method to achieve the intended outcome as new and precise results. The resonance states are classified, and the influence of various parameters of the studied system is analyzed. Fixed points at steady states are categorized into stable and unstable. The time behavior of the solutions, the modified amplitudes, and phases are examined and interpreted in the light of their graphical plots. Zones of stability and instability are concerned, in which the system’s behavior is stable for a wide range of used parameters. This model has become essential in recent times as it uses control sensors in industrial applications, buildings, infrastructure, automobiles, and transportation.
TL;DR: In this paper , the authors present various self-powered active chemical and biological sensors using TEGs, including physical, magnetic, and optical sensors, as well as a brief discussion about the development of TEG-based physical and magnetic sensors, the influence of environmental factors, various figures of merit, and significance of the TEG design are explained in context with active sensing.
Abstract: The demand for portable and wearable chemical or biosensors and their expeditious development in recent years has created a scientific challenge in terms of their continuous powering. As a result, mechanical energy harvesters such as piezoelectric and triboelectric generators (TEGs) have been explored recently either as sensors or harvesters to store charge in small, but long‐life, energy‐storage devices to power the sensors. The use of energy harvesters as sensors is particularly interesting, as with such multifunctional operations it is possible to reduce the number devices needed in a system, which also helps overcome the integration complexities. In this regard, TEGs are promising, particularly for energy autonomous chemical and biological sensors, as they can be developed with a wide variety of materials, and their mechanical energy to electricity conversion can be modulated by various analytes. This review focuses on this interesting dimension of TEGs and presents various self‐powered active chemical and biological sensors. A brief discussion about the development of TEG‐based physical, magnetic, and optical sensors is also included. The influence of environmental factors, various figures of merit, and the significance of TEG design are explained in context with the active sensing. Finally, the key applications, challenges, and future perspective of chemical and biological detection via TEGs are discussed with a view to drive further advances in the field of self‐powered sensors.
TL;DR: In this article, the chaotic dynamical system theory provides a simplified analytical framework that provides deeper insights into the performance of the asymmetric tristable energy harvester, which can more easily jump into the interwell motion and output the higher voltage under low-level excitations.
TL;DR: In this paper , the chaotic dynamical system theory provides a simplified analytical framework that provides deeper insights into the performance of the asymmetric tristable energy harvester, which can more easily jump into the interwell motion and output the higher voltage under low-level excitations.
01 Jan 2022
TL;DR: The use of Ti 3 C 2 T x MXenes/polyaniline composite greatly improved the electrokinetic energy conversion efficiencies of nano-hydroelectric generators, demonstrating a power output sufficient to charge a commercial battery for the very first time as discussed by the authors .
Abstract: The use of Ti 3 C 2 T x MXenes/polyaniline composite tremendously improved the electrokinetic energy conversion efficiencies of nano-hydroelectric generators, demonstrating a power output sufficient to charge a commercial battery for the very first time.
TL;DR: A detailed review of piezoelectric biomaterials, device designs, and possible applications such as health monitoring, cell stimulation, stimulation of the brain, and tissue engineering can be found in this paper .
TL;DR: In this paper , a novel dynamically synergistic regulation mechanism is proposed for rotation energy harvesting under the guidance of the dynamic regulation evolution, where nonlinear magnetic force and variable stiffness (centrifugal stiffening effect and penalty stiffness of adaptive-anastomotic barricades) synergistically regulate the dynamic behavior of the system.
TL;DR: In this paper , a broadband piezo-electromagnetic hybrid energy harvester was proposed to scavenge the vortex-induced and base excitation vibration energy in a wind energy harvesting system.