A facile mechanical energy harvester based on spring assisted triboelectric nanogenerators

2021 ◽  
Vol 5 (20) ◽  
pp. 5287-5294
Author(s):  
Harris Varghese ◽  
Achu Chandran
Keyword(s):  
Energy Harvester ◽  
Mechanical Energy ◽  
Electronic Devices ◽  
Finger Tapping ◽  
Triboelectric Nanogenerators ◽  
Electrical Output

A facile, scalable and robust spring assisted TENG (Sa-TENG) based on PVDF and PMMA films is developed without any complex fabrication steps. The Sa-TENG generated an electrical output of 120 V and 150 μA m−2 from finger tapping force and powered various electronic devices.

scholarly journals Progress on Self-Powered Wearable and Implantable Systems Driven by Nanogenerators

Micromachines ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 666
Author(s):  
Lanxin Yang ◽  
Zhihao Ma ◽  
Yun Tian ◽  
Bo Meng ◽  
Zhengchun Peng
Keyword(s):  
Mechanical Energy ◽  
Rapid Development ◽  
Electronic Devices ◽  
High Sensitivity ◽  
Self Powered ◽  
Triboelectric Nanogenerators ◽  
The Internet Of Things ◽  
Piezoelectric Nanogenerators

With the rapid development of the internet of things (IoT), sustainable self-powered wireless sensory systems and diverse wearable and implantable electronic devices have surged recently. Under such an opportunity, nanogenerators, which can convert continuous mechanical energy into usable electricity, have been regarded as one of the critical technologies for self-powered systems, based on the high sensitivity, flexibility, and biocompatibility of piezoelectric nanogenerators (PENGs) and triboelectric nanogenerators (TENGs). In this review, we have thoroughly analyzed the materials and structures of wearable and implantable PENGs and TENGs, aiming to make clear how to tailor a self-power system into specific applications. The advantages in TENG and PENG are taken to effectuate wearable and implantable human-oriented applications, such as self-charging power packages, physiological and kinematic monitoring, in vivo and in vitro healing, and electrical stimulation. This review comprehensively elucidates the recent advances and future outlook regarding the human body’s self-powered systems.

scholarly journals Recent Progress in Triboelectric Nanogenerators as a Renewable and Sustainable Power Source

2016 ◽  
Vol 2016 ◽  
pp. 1-24 ◽  
Author(s):  
Zhiming Lin ◽  
Jun Chen ◽  
Jin Yang
Keyword(s):  
Large Scale ◽  
Sliding Mode ◽  
Mechanical Energy ◽  
Electronic Devices ◽  
Power Source ◽  
Human Motion ◽  
Free Standing ◽  
Practical Applications ◽  
Triboelectric Nanogenerators ◽  
Sustainable Power

The newly developed triboelectric nanogenerators (TENGs) provide an excellent approach to convert mechanical energy into electricity, which are mainly based on the coupling between triboelectrification and electrostatic induction. The TENG has the potential of harvesting many kinds of mechanical energies such as vibration, rotation, wind, human motion, and even water wave energy, which could be a new paradigm for scavenging large scale energy. It also demonstrates a possible route towards practical applications for powering electronic devices. This paper presents a comprehensive review of the four modes of TENGs: vertical contact-separation mode, in-plane sliding mode, single-electrode mode, and free-standing triboelectric-layer mode. The performance enhancements of TENGs for harvesting energy as a sustainable power source are also discussed. In addition, recent reports on the hybridized nanogenerator are introduced, which may enable fully self-powered electronic devices. Finally, the practical applications of TENGs for energy harvesting are presented.

scholarly journals Fabrication of Piezoelectric ZnO Nanowires Energy Harvester on Flexible Substrate Coated with Various Seed Layer Structures

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1433
Author(s):  
Taoufik Slimani Tlemcani ◽  
Camille Justeau ◽  
Kevin Nadaud ◽  
Daniel Alquier ◽  
Guylaine Poulin-Vittrant
Keyword(s):  
Seed Layer ◽  
Layer Structure ◽  
Mechanical Energy ◽  
Flexible Substrate ◽  
Average Power ◽  
Electrical Characterization ◽  
Zno Nanowires ◽  
Device Structure ◽  
Layer Structures ◽  
Electrical Output

Flexible piezoelectric nanogenerators (PENGs) are very attractive for mechanical energy harvesting due to their high potential for realizing self-powered sensors and low-power electronics. In this paper, a PENG that is based on zinc oxide (ZnO) nanowires (NWs) is fabricated on flexible and transparent Polydimethylsiloxane (PDMS) substrate. The ZnO NWs were deposited on two different seed layer structures, i.e., gold (Au)/ZnO and tin-doped indium-oxide (ITO)/ZnO, using hydrothermal synthesis. Along with the structural and morphological analyses of ZnO NWs, the electrical characterization was also investigated for ZnO NWs-based flexible PENGs. In order to evaluate the suitability of the PENG device structure, the electrical output performance was studied. By applying a periodic mechanical force of 3 N, the ZnO NWs-based flexible PENG generated a maximum root mean square (RMS) voltage and average power of 2.7 V and 64 nW, respectively. Moreover, the comparison between the fabricated device performances shows that a higher electrical output can be obtained when ITO/ZnO seed layer structure is adopted. The proposed ZnO NWs-based PENG structure can provide a flexible and cost-effective device for supplying portable electronics.

Optimization of spiral-shaped piezoelectric energy harvester using Taguchi method

2017 ◽  
Vol 24 (19) ◽  
pp. 4484-4491 ◽  
Author(s):  
R Tikani ◽  
L Torfenezhad ◽  
M Mousavi ◽  
S Ziaei-Rad
Keyword(s):  
Taguchi Method ◽  
Energy Harvester ◽  
Piezoelectric Materials ◽  
Mechanical Energy ◽  
Experimental Investigations ◽  
Optimum Level ◽  
Low Frequencies ◽  
Piezoelectric Energy ◽  
Resonance Frequencies ◽  
Design Values

Nowadays, environmental energy resources, especially mechanical vibrations, have attracted the attention of researchers to provide energy for low-power electronic circuits. A common method for environmental mechanical energy harvesting involves using piezoelectric materials. In this study, a spiral multimode piezoelectric energy harvester was designed and fabricated. To achieve wide bandwidth in low frequencies (below 15 Hz), the first three resonance frequencies of the beam were designed to be close to each other. To do this, the five lengths of the substrate layer were optimized by the Taguchi method, using an L27 orthogonal array. Each experiment of the Taguchi method was then simulated in ANSYS software. Next, the optimum level of each design variable was obtained. A test rig was then constructed based on the optimum design values and some experimental investigations were conducted. A good correlation was observed between measured and the finite element results.

scholarly journals Triboelectric nanogenerators (TENG): Factors affecting its efficiency and applications

2021 ◽  
Vol 34 (2) ◽  
pp. 157-172
Author(s):  
Deepak Anand ◽  
Singh Sambyal ◽  
Rakesh Vaid
Keyword(s):  
Large Scale ◽  
Review Paper ◽  
Mechanical Energy ◽  
Electrical Energy ◽  
Wearable Electronics ◽  
Factors Affecting ◽  
Electrostatic Induction ◽  
Triboelectric Nanogenerators ◽  
Human Motions ◽  
Great Scope

The demand for energy is increasing tremendously with modernization of the technology and requires new sources of renewable energy. The triboelectric nanogenerators (TENG) are capable of harvesting ambient energy and converting it into electricity with the process of triboelectrification and electrostatic-induction. TENG can convert mechanical energy available in the form of vibrations, rotation, wind and human motions etc., into electrical energy there by developing a great scope for scavenging large scale energy. In this review paper, we have discussed various modes of operation of TENG along with the various factors contributing towards its efficiency and applications in wearable electronics.

Preparation of Polyvinylidene Fluoride (PVDF) Triboelectric Nanogenerators with Different Polymer

2015 ◽  
Vol 814 ◽  
pp. 91-95
Author(s):  
Cheng Wang ◽  
Hao Yu ◽  
Tao Huang ◽  
Chao Tan
Keyword(s):  
Polymer Films ◽  
Polyvinylidene Fluoride ◽  
Low Cost ◽  
Mechanical Energy ◽  
Flexible Polymer ◽  
Surrounding Environment ◽  
Nanofiber Membranes ◽  
External Consistency ◽  
Low Wear ◽  
Triboelectric Nanogenerators

Triboelectric nanogenerators have recently been used to harvest mechanical energy from surrounding environment which is of great significance in the field of energy conversion. Electrospinning provides a simple, low cost and versatile method for the generation of 1D nanostrucutures. Nanofiber membranes have many advantages over the commonly used dense film for designing the riboelectric nanogenerators, such as the low wear resistance caused from the internal and excellent external consistency of the electrospinning membranes. In this paper, we produce a variety of polymer films by electro-spinning, and fabricate Polyvinylidene Fluoride (PVDF) triboelectric nanogenerators with different polymer films afterwards. We except to explore the TEG power generation effect, and influencing factors, and then determine the best combination of the results of TEG (PVDF-PHBV). Such a flexible polymer TEG generates output voltage of up to 112 V at a power of 0.045W.

A Quantitative Analysis of Kinetic Energy Harvesting for Hybrid Power Supplies

2012 ◽  
Author(s):  
Edwar Romero ◽  
Gerardo Carbajal ◽  
Robert Warrington ◽  
Michael Neuman
Keyword(s):  
Quantitative Analysis ◽  
Energy Harvesting ◽  
Figure Of Merit ◽  
Energy Harvester ◽  
Electronic Devices ◽  
Consumer Electronics ◽  
Power Supplies ◽  
Body Motion ◽  
Battery Life ◽  
Biomedical Monitoring

This study presents a quantitative analysis of experimental data for extracting energy from human body motion and its possibility of powering portable electronic devices, such as consumer electronics or biomedical monitoring sensors. Since portable electronic devices are typically limited by the size and lifespan of batteries, energy harvesting shows potential as alternative for extending battery life. The acceleration was collected experimentally from 10 subjects while walking and running at different velocities on a treadmill. The acceleration results were studied and a figure of merit consisting of the acceleration-squared-to-frequency was found to determine, in addition to the quality factor, as the important factors for optimal energy harvesting. It was determined that from average walking an energy harvester can produce a power output density greater than 1mW/cm3.

Ultrasoft and cuttable paper-based triboelectric nanogenerators for mechanical energy harvesting

Nano Energy ◽  
2018 ◽  
Vol 44 ◽  
pp. 279-287 ◽  
Author(s):  
Chaoxing Wu ◽  
Tae Whan Kima ◽  
Sihyun Sung ◽  
Jae Hyeon Park ◽  
Fushan Li
Keyword(s):  
Energy Harvesting ◽  
Mechanical Energy ◽  
Triboelectric Nanogenerators
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