Publications de Elena Bertseva

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We present the microrheological study of the two close human epithelial cell lines: non-cancerous HCV29 and cancerous T24. The optical tweezers tracking was applied to extract the several seconds long trajectories of endogenous lipid granules at time step ...

We propose a system to characterize the 3-D diffusion properties of the probing bead trapped by a photonic-force microscope. We follow a model-based approach, where the model of the dynamics of the bead is given by the Langevin equation. Our procedure comb ...

Plasma membrane tension and the pressure generated by actin polymerization are two antagonistic forces believed to define the protrusion rate at the leading edge of migrating cells [1-5]. Quantitatively, resistance to actin protrusion is a product of membr ...

We investigate the diffusive motion of micron-sized spherical tracers in a viscoelastic actin filament network over the time span of 8 orders of magnitude using optical-tweezers single-particle tracking. The hydrodynamic interactions of a tracer with the s ...

We study the Brownian motion of microbeads immersed in water and in a viscoelastic wormlike micelles solution by optical trapping interferometry and diffusing wave spectroscopy. Through the mean-square displacement obtained from both techniques, we deduce ...

A traditional photonic-force microscope (PFM) results in huge sets of data, which requires tedious numerical analysis. In this paper, we propose instead an analog signal processor to attain real-time capabilities while retaining the richness of the traditi ...

Elena Bertseva

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Optical trapping microrheology in cultured human cells

Model-Based Estimation of Three-Dimensional Stiffness Parameters in Photonic-Force Microscopy

Contact Angle at the Leading Edge Controls Cell Protrusion Rate

Hydrodynamic and subdiffusive motion of tracers in a viscoelastic medium

Accounting for inertia effects to access the high-frequency microrheology of viscoelastic fluids

Intracellular nanomanipulation by a photonic-force microscope with real-time acquisition of a 3D stiffness matrix

Interplay between cytoskeletal forces, membrane tension, and hydrostatic pressure in rapidly migrating cells