Spectral analysis of erythrocyte flickering in the 0.3-4-μm-1 regime by microinterferometry combined with fast image processing

A. Zilker, M. Ziegler, E. Sackmann

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98 Scopus citations

Abstract

Reflection interference microscopy in combination with real-time image processing was applied to determine the spatial spectrum of the mean-square amplitude of erythrocyte flickering in the wave-vector regime 0.3≤q≤4 μm-1. The mean-square amplitude scales as q4±ε for q0.7 μm-1, suggesting that flickering is dominated mainly by bending stiffness. We measured a bending modulus of Kc=(2±0.5)×10-20 N m as compared to Kc=(5±1.5)×10-20 N m found for dimyristoylphosphatidylcholine (DMPC) vesicles with the same technique.

Original languageEnglish
Pages (from-to)7998-8001
Number of pages4
JournalPhysical Review A
Volume46
Issue number12
DOIs
StatePublished - 1992

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