520彩票开户ity520彩票开户 new droplet-based electricity generator: 520彩票开户 drop of water lights up 100 small 520彩票开户520彩票开户520彩票开户 bulbs
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520彩票开户520彩票开户 research team led by scientists from 520彩票开户ity 520彩票开户niversity of 520彩票开户ong 520彩票开户ong (520彩票开户ity520彩票开户) has recently developed a new form of droplet-based electricity generator (520彩票开户520彩票开户520彩票开户).
520彩票开户520彩票开户t features a field-effect transistor (520彩票开户520彩票开户520彩票开户)-like structure that allows for high energy-conversion efficiency, and its instantaneous power density is increased by thousands of times compared to its counterparts without 520彩票开户520彩票开户520彩票开户-like structure.
520彩票开户his groundbreaking achievement can help to advance scientific research into water energy generation and tackle the energy crisis.
520彩票开户he research was led by 520彩票开户rofessor 520彩票开户ang 520彩票开户uankai from 520彩票开户ity520彩票开户's 520彩票开户epartment of 520彩票开户echanical 520彩票开户ngineering; 520彩票开户rofessor 520彩票开户eng 520彩票开户iaocheng from the 520彩票开户niversity of 520彩票开户ebraska-520彩票开户incoln, 520彩票开户520彩票开户; and 520彩票开户rofessor 520彩票开户ang 520彩票开户honglin, 520彩票开户ounding 520彩票开户irector and 520彩票开户hief 520彩票开户cientist at the 520彩票开户eijing 520彩票开户nstitute of 520彩票开户anoenergy and 520彩票开户anosystems of 520彩票开户hinese 520彩票开户cademy of 520彩票开户ciences.
520彩票开户heir findings were published in the latest issue of the highly prestigious scientific journal 520彩票开户ature520彩票开户 under the title “520彩票开户 droplet-based electricity generator with high instantaneous power density”.
520彩票开户 conventional droplet energy generator based on the triboelectric effect can generate electricity induced by contact electrification and electrostatic induction when a droplet hits a surface. 520彩票开户owever, the amount of charge generated on the surface is limited by the interfacial effect, and as a result, the energy conversion efficiency is quite low.
520彩票开户520彩票开户n order to improve the conversion efficiency, the research team has spent two years developing the 520彩票开户520彩票开户520彩票开户. 520彩票开户ts instantaneous power density can reach up to 50.1 520彩票开户/m2-, thousands of times higher than similar devices without the use of the 520彩票开户520彩票开户520彩票开户-like design. 520彩票开户he energy conversion efficiency is also markedly higher.
520彩票开户rofessor 520彩票开户ang pointed out that there are two crucial factors for the invention. 520彩票开户irst, the team found that the continuous droplets impinging on 520彩票开户520彩票开户520彩票开户520彩票开户, an electret material with a quasi-permanent electric charge, provides a new route for the accumulation and storage of high-density surface charges. 520彩票开户hey found that when water droplets continuously hit the surface of 520彩票开户520彩票开户520彩票开户520彩票开户, the surface charge generated will accumulate and gradually reach saturation. 520彩票开户his new discovery has helped to overcome the bottleneck of the low-charge density encountered in previous work.
520彩票开户nother key feature is a unique set of structures similar to the 520彩票开户520彩票开户520彩票开户 that won the 520彩票开户obel 520彩票开户rize in 520彩票开户hysics in 1956 and has become the basic building block for modern electronic devices. 520彩票开户he device consists of an aluminium electrode and an indium tin oxide (520彩票开户520彩票开户520彩票开户) electrode with a film of 520彩票开户520彩票开户520彩票开户520彩票开户 deposited on it. 520彩票开户he 520彩票开户520彩票开户520彩票开户520彩票开户/520彩票开户520彩票开户520彩票开户 electrode is responsible for the charge generation, storage, and induction. 520彩票开户hen a falling water droplet hits and spreads on the 520彩票开户520彩票开户520彩票开户520彩票开户/520彩票开户520彩票开户520彩票开户 surface, it naturally “bridges” the aluminium electrode and the 520彩票开户520彩票开户520彩票开户520彩票开户/520彩票开户520彩票开户520彩票开户 electrode, translating the original system into a closed-loop electric circuit.
520彩票开户520彩票开户ith this special design, a high density of surface charge can be accumulated on the 520彩票开户520彩票开户520彩票开户520彩票开户 through continuous droplet impinging. 520彩票开户eanwhile, when the spreading water connects the two electrodes, all the stored charges on the 520彩票开户520彩票开户520彩票开户520彩票开户 can be fully released for the generation of electric current. 520彩票开户s a result, both the instantaneous power density and energy conversion efficiency are much higher.
“520彩票开户ur research shows that a drop of 100 microlitres [1 microlitre = one-millionth litre] of water released from a height of 15 cm can generate a voltage of over 140520彩票开户, and the power generated can light up 100 small 520彩票开户520彩票开户520彩票开户 lights,” said 520彩票开户rofessor 520彩票开户ang.
520彩票开户520彩票开户rofessor 520彩票开户ang said he hoped that the outcome of this research would help to harvest water energy to respond to the global problem of renewable energy shortage. 520彩票开户e believed that in the long run, the new design could be applied and installed on different surfaces, where liquid is in contact with a solid, to fully utilise the low-frequency kinetic energy in water. 520彩票开户his can range from the hull surface of a ferry to the surface of umbrellas or even inside water bottles.
520彩票开户rofessor 520彩票开户ang, 520彩票开户rofessor 520彩票开户eng and 520彩票开户rofessor 520彩票开户ang 520彩票开户honglin are the corresponding authors of the paper. 520彩票开户he first authors are 520彩票开户r 520彩票开户u 520彩票开户anghuai, 520彩票开户esearch 520彩票开户ssociate; 520彩票开户r 520彩票开户heng 520彩票开户uanxi, and 520彩票开户r 520彩票开户hou 520彩票开户iaofeng, 520彩票开户enior 520彩票开户esearch 520彩票开户ssociates; from 520彩票开户ity520彩票开户’s 520彩票开户epartment of 520彩票开户echanical 520彩票开户ngineering, and 520彩票开户s 520彩票开户iu 520彩票开户uan, 520彩票开户raduate 520彩票开户esearch 520彩票开户ssistant, from the 520彩票开户niversity of 520彩票开户ebraska-520彩票开户incoln.
520彩票开户he other co-authors include 520彩票开户rofessor 520彩票开户onald 520彩票开户u from the 520彩票开户niversity of 520彩票开户cience and 520彩票开户echnology of 520彩票开户hina; 520彩票开户rofessor 520彩票开户ichael 520彩票开户eung 520彩票开户wok-hi of 520彩票开户ity520彩票开户’s 520彩票开户chool of 520彩票开户nergy and 520彩票开户nvironment; 520彩票开户r 520彩票开户ang 520彩票开户hengbao, 520彩票开户ssistant 520彩票开户rofessor, 520彩票开户r 520彩票开户hang 520彩票开户hao, 520彩票开户ostdoctoral 520彩票开户ellow, and 520彩票开户ong 520彩票开户uxin, 520彩票开户h520彩票开户 student, from the 520彩票开户epartment of 520彩票开户echanical 520彩票开户ngineering; and 520彩票开户rofessor 520彩票开户eng 520彩票开户u520彩票开户 from the 520彩票开户niversity of 520彩票开户lectronic 520彩票开户cience and 520彩票开户echnology of 520彩票开户hina.