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22 June 2018

Optical generation of arbitrary chirps

Radio-frequency chirped waveforms (RFCWs) with broad bandwidth and dynamically tunable parameters are of fundamental interest to a wide range of important practical applications, including radar, imaging, metrology, spectroscopy etc. In recent years, photonic-assisted solutions have been demonstrated to overcome the bandwidth and flexibility constraints of purely-electronic RFCW generation techniques.

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20 June 2018

CNRS results

Congratulations to Bastien Arnal, admitted as researcher in section CID 54, and Eric Bertin as research director in section 2.

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19 June 2018

Are cells ticklish?

Cells are sensitive to their mechanical environment: pressure or shear can provoke biochemical responses. In order to accurately test the reaction of adherent cells to mechanical stimulations, we developed magneto-active substrates.

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4 June 2018

Modeling of surfactant-driven front instabilities in spreading bacterial colonies

The spreading of bacterial colonies at solid-air interfaces is determined by the physico-chemical properties of the involved interfaces. A widespread strategy for an efficient surface colonization is the production of surfactants.

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17 May 2018

To push one’s way through a crowd…

Making your way through a dense crowd is not an easy task. A distressed person seeking assistance or a public figure wanting to pass through a crowd of supporters are facing various scenarios. The motion of an individual in a crowd is studied for several scenarios using a 2D non-inertial mechanical model of interacting rigid disks solved with numerical simulation.

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