title: Coherence properties of red blood cell membrane motions.
abstract: We use a highly sensitive, noncontact, optical interferometric technique to quantify the red blood cell membrane fluctuations at the nanometer and millisecond scales. The results reveal significant properties of both temporal and spatial coherence associated with the membrane dynamics. We show that these correlations can be accounted for by the viscoelastic properties of the cell membrane. From this measurement, we extract the loss and storage moduli associated with the membrane and find a crossover frequency at which the buffer viscosity seems to become dominant.
authors.affiliation: G. R. Harrison Spectroscopy Laboratory, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. gpopescu@mit.edu
authors.forename: Gabriel
authors.initials: G
authors.lastname: Popescu
authors.forename: YongKeun
authors.initials: Y
authors.lastname: Park
authors.forename: Ramachandra R
authors.initials: RR
authors.lastname: Dasari
authors.forename: Kamran
authors.initials: K
authors.lastname: Badizadegan
authors.forename: Michael S
authors.initials: MS
authors.lastname: Feld