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Título

Signal bi-amplification in networks of unidirectionally coupled MEMS

AutorTchakui, Murielle Vanessa; Woafo, Paul; Colet, Pere
Palabras claveStatistical and Nonlinear Physics
Fecha de publicaciónene-2016
EditorEDP Sciences
CitaciónEuropean Physical Journal B 89: 22 (2016)
ResumenThe purpose of this paper is to analyze the propagation and the amplification of an input signal in networks of unidirectionally coupled micro-electro-mechanical systems (MEMS). Two types of external excitations are considered: sinusoidal and stochastic signals. We show that sinusoidal signals are amplified up to a saturation level which depends on the transmission rate and despite MEMS being nonlinear the sinusoidal shape is well preserved if the number of MEMS is not too large. However, increasing the number of MEMS, there is an instability that leads to chaotic behavior and which is triggered by the amplification of the harmonics generated by the nonlinearities. We also show that for stochastic input signals, the MEMS array acts as a band-pass filter and after just a few elements the signal has a narrow power spectra.
Versión del editorhttp://doi.org/10.1140/epjb/e2015-60870-1
URIhttp://hdl.handle.net/10261/157828
DOI10.1140/epjb/e2015-60870-1
ISSN1434-6028
E-ISSN1434-6036
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