Cargando…
Direct observation of coherent energy transfer in nonlinear micromechanical oscillators
Energy dissipation is an unavoidable phenomenon of physical systems that are directly coupled to an external environmental bath. In an oscillatory system, it leads to the decay of the oscillation amplitude. In situations where stable oscillations are required, the energy dissipated by the vibrations...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5458562/ https://www.ncbi.nlm.nih.gov/pubmed/28548088 http://dx.doi.org/10.1038/ncomms15523 |
_version_ | 1783241786283524096 |
---|---|
author | Chen, Changyao Zanette, Damián H. Czaplewski, David A. Shaw, Steven López, Daniel |
author_facet | Chen, Changyao Zanette, Damián H. Czaplewski, David A. Shaw, Steven López, Daniel |
author_sort | Chen, Changyao |
collection | PubMed |
description | Energy dissipation is an unavoidable phenomenon of physical systems that are directly coupled to an external environmental bath. In an oscillatory system, it leads to the decay of the oscillation amplitude. In situations where stable oscillations are required, the energy dissipated by the vibrations is usually compensated by replenishment from external energy sources. Consequently, if the external energy supply is removed, the amplitude of oscillations start to decay immediately, since there is no means to restitute the energy dissipated. Here, we demonstrate a novel dissipation engineering strategy that can support stable oscillations without supplying external energy to compensate losses. The fundamental intrinsic mechanism of resonant mode coupling is used to redistribute and store mechanical energy among vibrational modes and coherently transfer it back to the principal mode when the external excitation is off. To experimentally demonstrate this phenomenon, we exploit the nonlinear dynamic response of microelectromechanical oscillators to couple two different vibrational modes through an internal resonance. |
format | Online Article Text |
id | pubmed-5458562 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-54585622017-07-11 Direct observation of coherent energy transfer in nonlinear micromechanical oscillators Chen, Changyao Zanette, Damián H. Czaplewski, David A. Shaw, Steven López, Daniel Nat Commun Article Energy dissipation is an unavoidable phenomenon of physical systems that are directly coupled to an external environmental bath. In an oscillatory system, it leads to the decay of the oscillation amplitude. In situations where stable oscillations are required, the energy dissipated by the vibrations is usually compensated by replenishment from external energy sources. Consequently, if the external energy supply is removed, the amplitude of oscillations start to decay immediately, since there is no means to restitute the energy dissipated. Here, we demonstrate a novel dissipation engineering strategy that can support stable oscillations without supplying external energy to compensate losses. The fundamental intrinsic mechanism of resonant mode coupling is used to redistribute and store mechanical energy among vibrational modes and coherently transfer it back to the principal mode when the external excitation is off. To experimentally demonstrate this phenomenon, we exploit the nonlinear dynamic response of microelectromechanical oscillators to couple two different vibrational modes through an internal resonance. Nature Publishing Group 2017-05-26 /pmc/articles/PMC5458562/ /pubmed/28548088 http://dx.doi.org/10.1038/ncomms15523 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Chen, Changyao Zanette, Damián H. Czaplewski, David A. Shaw, Steven López, Daniel Direct observation of coherent energy transfer in nonlinear micromechanical oscillators |
title | Direct observation of coherent energy transfer in nonlinear micromechanical oscillators |
title_full | Direct observation of coherent energy transfer in nonlinear micromechanical oscillators |
title_fullStr | Direct observation of coherent energy transfer in nonlinear micromechanical oscillators |
title_full_unstemmed | Direct observation of coherent energy transfer in nonlinear micromechanical oscillators |
title_short | Direct observation of coherent energy transfer in nonlinear micromechanical oscillators |
title_sort | direct observation of coherent energy transfer in nonlinear micromechanical oscillators |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5458562/ https://www.ncbi.nlm.nih.gov/pubmed/28548088 http://dx.doi.org/10.1038/ncomms15523 |
work_keys_str_mv | AT chenchangyao directobservationofcoherentenergytransferinnonlinearmicromechanicaloscillators AT zanettedamianh directobservationofcoherentenergytransferinnonlinearmicromechanicaloscillators AT czaplewskidavida directobservationofcoherentenergytransferinnonlinearmicromechanicaloscillators AT shawsteven directobservationofcoherentenergytransferinnonlinearmicromechanicaloscillators AT lopezdaniel directobservationofcoherentenergytransferinnonlinearmicromechanicaloscillators |