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Storing Energy in the Mechanical Domain

Published online by Cambridge University Press:  16 December 2014

O.G. Súchil
Affiliation:
Dept. Enginyeria Electrònica, Universitat Autònoma de Barcelona, Bellaterra, 08193, SPAIN.
G. Abadal
Affiliation:
Dept. Enginyeria Electrònica, Universitat Autònoma de Barcelona, Bellaterra, 08193, SPAIN.
F. Torres
Affiliation:
Dept. Enginyeria Electrònica, Universitat Autònoma de Barcelona, Bellaterra, 08193, SPAIN.
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Abstract

Self-powered microsystems as an alternative to standard systems powered by electrochemical batteries are taking a growing interest. In this work, we propose a different method to store the energy harvested from the ambient which is performed in the mechanical domain. Our mechanical storage concept is based on a spring which is loaded by the force associated to the energy source to be harvested [1]. The approach is based on pressing an array of fine wires (fws) grown vertically on a substrate surface. For the fine wires based battery, we have chosen ZnO fine wires due the fact that they could be grown using a simple and cheap process named hydrothermal method [2]. We have reported previous experiments changing temperature and initial pH of the solution in order to determine the best growth [3]. From new experiments done varying the compounds concentration the best results of fine wires were obtained. To characterize these fine wires we have considered that the maximum load we can apply to the system is limited by the linear buckling of the fine wires. From the best results we obtained a critical strain of εc = 3.72 % and a strain energy density of U = 11.26 MJ/m3, for a pinned-fixed configuration [4].

Type
Articles
Copyright
Copyright © Materials Research Society 2014 

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References

REFERENCES

Hill, F.A., Havel, T.F., et al. , Nanotechnology 20 (2009) 255704, 12 pp.Google Scholar
Baruah Sunandan et al, Science Technologies Advanced (2009) 10, 013001 10.1088/1468-6996/10/1/013001CrossRefGoogle Scholar
Súchil, O.G., Abadal, G., Torres, F., Nanoenergy Letters N.5 Febraury 1, 2013, page 13.Google Scholar
Schmidt-Mende, Lukas, et al. , MaterialsToday, Volume 10, Number 5, 2007.Google Scholar
Wang, A.L., et al. , Nat.Nanotechnol. 4, 3439, 2009.10.1038/nnano.2009.135CrossRefGoogle Scholar
Vayssieres, Lionel, et al. , Chemistry of Materials, Volume 13, Number 12, 2001.Google Scholar
Dietrich, Christof P., J.Appl.Phys. 109, 013712, 2011.10.1063/1.3530610CrossRefGoogle Scholar
Govender, K., Boyle, D.S., Kenway, P.B., O'Brien, P., J. Mater. Chem. 14 2575, 2004.Google Scholar
Lobontiu, Nicolae, Ephraim Garcia, “Mechanics of Microelectromechanical systems”, Kluwer Academic Publishers, Pages 333–337.Google Scholar