Fractional rheology of muscle precursor cells
ARNEODO, Alain
Laboratoire de Physique de l'ENS Lyon [Phys-ENS]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Laboratoire de Physique de l'ENS Lyon [Phys-ENS]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
ARGOUL, Françoise
Laboratoire de Physique de l'ENS Lyon [Phys-ENS]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
< Reduce
Laboratoire de Physique de l'ENS Lyon [Phys-ENS]
Laboratoire Ondes et Matière d'Aquitaine [LOMA]
Language
en
Article de revue
This item was published in
Journal of Rheology. 2018-11, vol. 62, n° 6, p. pp. 1347-1362
American Institute of Physics
English Abstract
The authors propose a wavelet-based decomposition of creep fluctuation signals recorded from living muscle precursor cells that revisit the traditional computation of their power spectrum from FFT-based decomposition. This ...Read more >
The authors propose a wavelet-based decomposition of creep fluctuation signals recorded from living muscle precursor cells that revisit the traditional computation of their power spectrum from FFT-based decomposition. This decomposition offers a higher sensitivity for detecting the occurrence of fractional fluctuations and for quantitatively estimating the power-law exponent ² of this spectrum as a signature of the scale-invariant rheology of living cells. This new method has also the unprecedented advantage of providing a test of the validity of the commonly assumed 'monofractal' self-similar (as compared to 'multifractal' intermittent) nature of these fluctuations and hence accrediting the use of a single rheological exponent ± = ²/2. We report and discuss results obtained when applying this method to creep experiments performed with an AFM nanoindenter placed in contact with single myoblasts and myotubes, adherent on collagen coated coverslips, and in different culture conditions.Read less <
Keywords
RHEOLOGIE
DYNAMIQUE DES FLUIDES
VISCOELASTICITE
NANOSCIENCES
English Keywords
RHEOLOGY AND FLUID DYNAMICS
CYTOSKELETON
WAVELET TRANSFORM
ATOMIC FORCE MICROSCOPY
SIGNAL PROCESSING
NANO-INDENTATION
FRACTIONAL CALCULUS
Origin
Hal imported