TY - JOUR
T1 - Wave propagation in elliptic graphene sheet for energy harvesting
AU - Tian, Yongding
AU - Gao, Wenchao
AU - Liu, Yanming
AU - Sagoe-Crentsil, Kwesi
AU - Zhang, Jian
AU - Duan, Wenhui
N1 - Funding Information:
The authors are grateful for the financial support of the Australian Research Council ( IH150100006 ) in conducting this study. And the authors appreciate the financial supports from the National Natural Science Foundation of China (Grant No.: 51778134 ). The authors appreciate the support provided by Qianhui Zhang, Xupei Yao, and Yuan Gao at Monash University, who contributed greatly to the simulation work in this article. Finally, the first author gratelfully acknowledge financial support from China Scholarship Council .
Publisher Copyright:
© 2021 Elsevier Ltd
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/8
Y1 - 2021/8
N2 - Wave propagation of elliptic graphene sheets was investigated using the molecular dynamic (MD) simulation method for efficient energy harvesting. The displacement wave propagation pattern, wave focusing, and energy transportation of elliptic graphene sheets with different aspect ratios under various loading conditions are comprehensively studied. Results show that displacement wave energy concentrates at focal points of the elliptic graphene under impulse loadings. And the wave propagation patterns of elliptic graphene under the impulse and sinusoidal loading are different because of different frequency components in the loading. Compared with rectangular graphene sheets, elliptic graphene sheets can harvest more energy at the lower and upper focal points when line impulse loadings act at different locations. Moreover, the energy harvesting time of elliptic graphene is less than that of rectangular graphene for gathering the same amount of kinetic energy. It is found that the energy harvesting efficiency of elliptic graphene sheets outperforms those of rectangular graphene sheets with three aspect ratios, demonstrating the superiority of elliptic graphene sheets for energy harvesting. The elliptic graphene sheet with an aspect ratio of 2 has the optimal kinetic energy harvesting performance by considering both the energy harvesting time and efficiency. Our findings will be valuable for designing and fabricating the emerging two-dimensional material-based energy harvesters, mass sensors, and gas detectors.
AB - Wave propagation of elliptic graphene sheets was investigated using the molecular dynamic (MD) simulation method for efficient energy harvesting. The displacement wave propagation pattern, wave focusing, and energy transportation of elliptic graphene sheets with different aspect ratios under various loading conditions are comprehensively studied. Results show that displacement wave energy concentrates at focal points of the elliptic graphene under impulse loadings. And the wave propagation patterns of elliptic graphene under the impulse and sinusoidal loading are different because of different frequency components in the loading. Compared with rectangular graphene sheets, elliptic graphene sheets can harvest more energy at the lower and upper focal points when line impulse loadings act at different locations. Moreover, the energy harvesting time of elliptic graphene is less than that of rectangular graphene for gathering the same amount of kinetic energy. It is found that the energy harvesting efficiency of elliptic graphene sheets outperforms those of rectangular graphene sheets with three aspect ratios, demonstrating the superiority of elliptic graphene sheets for energy harvesting. The elliptic graphene sheet with an aspect ratio of 2 has the optimal kinetic energy harvesting performance by considering both the energy harvesting time and efficiency. Our findings will be valuable for designing and fabricating the emerging two-dimensional material-based energy harvesters, mass sensors, and gas detectors.
KW - Elliptic graphene
KW - Energy harvesting
KW - Energy transportation
KW - Molecular dynamic simulation
KW - Wave propagation
UR - http://www.scopus.com/inward/record.url?scp=85105247909&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2021.106089
DO - 10.1016/j.nanoen.2021.106089
M3 - Article
AN - SCOPUS:85105247909
SN - 2211-2855
VL - 86
JO - Nano Energy
JF - Nano Energy
M1 - 106089
ER -
