Amplification of thermal noise by vesicle dynamics

A novel noise amplification mechanism resulting from the interaction of thermal fluctuations and nonlinear vesicle dynamics is reported. It is observed in a time-dependent vesicle state called trembling (TR). High spatial resolution and very long time series of TR compared to the vesicle period allo...

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Published in:Physical review letters 2012-12, Vol.109 (26), p.268103-268103, Article 268103
Main Authors: Levant, Michael, Steinberg, Victor
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Language:English
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description A novel noise amplification mechanism resulting from the interaction of thermal fluctuations and nonlinear vesicle dynamics is reported. It is observed in a time-dependent vesicle state called trembling (TR). High spatial resolution and very long time series of TR compared to the vesicle period allow us to quantitatively analyze the generation and amplification of spatial and temporal modes of the vesicle shape perturbations. During a compression part of each TR cycle, a vesicle finds itself on the edge of the wrinkling instability, where thermally excited spatial modes are amplified.
doi_str_mv 10.1103/PhysRevLett.109.268103
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title Amplification of thermal noise by vesicle dynamics
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