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A drawstring triboelectric nanogenerator with modular electrodes for harvesting wave energy

Nano Research 2023年第8期16卷 10931-10937页

作者： Da Zhao Hengyu Li Jianlong Wang Qi Gao Yang Yu Jianming Wen Zhong Lin Wang Tinghai Cheng School of Mechatronic Engineering Changchun University of TechnologyChangchun 130012China Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Engineering University of Chinese Academy of SciencesBeijing 100049China College of Engineering Zhejiang Normal UniversityJinhua 321004China Georgia Institute of Technology AtlantaGA 30332-0245USA

The development and utilization of marine blue energy has become the focus of current research.A drawstring triboelectric nanogenerator with modular electrodes(DS-TENG)is proposed to harvest wave *** displacement and water wave adaptability are improved by using the drawstring structure in the ***,the modular electrode design is applied to improve the durability and replaceability of the generation *** rationality of the structure is verified by theoretical analysis,and performance experiments on the fundamental output,displacement and frequency,durability and application are carried *** DS-TENG can achieve output performance of 98.03 nC,3.63μA,238.50 V and 923.92µW at 150 mm and 1.0 *** addition,the performance drops by 6.11%after 110,000 cycles for DS-TENG *** paper will provide reference for the design of TENG that adapts to a wide range of wave heights.

关键词： triboelectric nanogenerator wave energy harvesting drawstring modular electrodes motion displacement

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A novel tuned heave plate system for heave motion suppression and energy harvesting on semi-submersible platforms

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Science China(Technological Sciences) 2016年第6期59卷 897-912页

作者： LIU Kun OU Jin Ping School of Civil Engineering Harbin Institute of Technology Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education Harbin Institute of Technology Institute of Ocean Deep Water Engineering Dalian University of Technology

Deepwater offshore structures such as semi-submersible platforms suffer powerful ocean waves due to their location and site condition. The long distance away from the shore also brings many difficulties to energy supply for the platform operation. How to reduce the response of the platform and convert the wave energy into electrical power is a meaningful topic. In this paper, a tuned heave plate system(THP) is presented and designed to be employed on a semi-submersible platform for heave motion suppression and energy harvesting. This THP system is composed of spring supports, a power take-off system(PTO), and a heave plate. The PTO system is a permanent magnet linear generator(PMLG), which could directly convert the kinetic energy of the heave plate into electronic power. The stiffness of the spring supports is designed based on the principle of the tuned mass damper(TMD). The numerical model of the platform and the THP system is established according to the hydrodynamic analysis results of the platform. The model is tested and modified by scale model tests on the platform in the wave tank. A parameter study, including the size, tuned period, and damping ratio of the THP system, is conducted systematically based on the numerical model. The optimal parameters of the THP are selected due to the maximum heave motion reduction under severe wave conditions in South China Sea. The performance of the semi-submersible with and without the THP system under different wave conditions is analyzed. It is demonstrated that this novel tuned heave plate system could reduce the heave motion of the semi-submersible platform significantly and generate considerable power, which makes the THP system have a broad prospect for development.

关键词： heave motion semi-submersible wave energy harvesting wave energy converter TMD

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Probing the wave Nature of Light-Matter Interaction

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World Journal of Condensed Matter Physics 2018年第2期8卷 62-89页

作者： D.E.Boone C.H.Jackson A.T.Swecker J.S.Hergenrather K.S.Wenger O.Kokhan B.Terzic I.Melnikov I.N.Ivanov E.C.Stevens G.Scarel College of Integrated Science and Engineering James Madison UniversityHarrisonburgVirginiaUSA Department of Physics and Astronomy James Madison UniversityHarrisonburgVAUSA Department of Chemistry and Biochemistry James Madison UniversityHarrisonburgVAUSA Department of Physics Old Dominion UniversityNorfolkVAUSA Center for Nanophase Materials Sciences Oak Ridge National LaboratoryOak RidgeTNUSA Department of Chemical and Biomolecular Engineering North Carolina State UniversityCentennial CampusRaleighNCUSA

The wave-particle duality of light is a controversial topic in modern physics. In this context, this work highlights the ability of the wave-nature of light on its own to account for the conservation of energy in light-matter interaction. Two simple fundamental properties of light as wave are involved: its period and its power P. The power P depends only on the amplitude of the wave’s electric and magnetic fields (Poynting’s vector), and can easily be measured with a power sensor for visible and infrared lasers. The advantage of such a wave-based approach is that it unveils unexpected effects of light’s power P capable of explaining numerous results published in current scientific literature, of correlating phenomena otherwise considered as disjointed, and of making predictions on ways to employ the electromagnetic (EM) waves which so far are unexplored. In this framework, this work focuses on determining the magnitude of the time interval that, coupled with light’s power P, establishes the energy conserved in the exchange of energy between light and matter. To reach this goal, capacitors were excited with visible and IR lasers at variable average power P. As the result of combining experimental measurements and simulations based on the law of conservation of energy, it was found that the product of the period of the light by its power P fixes the magnitude of the energy conserved in light’s interaction with the capacitors. This finding highlights that the energy exchanged is defined in the time interval equal to the period of the light’s wave. The validity of the finding is shown to hold in light’s interaction with matter in general, e.g. in the photoelectric effect with x-rays, in the transfer of electrons between energy levels in semiconducting interfaces of field effect transistors, in the activation of photosynthetic reactions, and in the generation of action potentials in retinal ganglion cells to enable vision in vertebrates. Finally, the validity of the find

关键词： Infrared Light-Matter Interaction Conservation Of energy wave energy harvesting

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