In Vitro picosecond ultrasonics in a single cell

Rossignol, C.; Chigarev, N.; Ducousso, M.; Audoin, B.; Forget, G.; Guillemot, F.; Durrieu, M. C.
September 2008
Applied Physics Letters;9/22/2008, Vol. 93 Issue 12, p123901
Academic Journal
Ultrasonics signals at frequencies 5.7±0.1 and 6.8±0.1 GHz are measured in two organelles of a single vegetal cell in vitro with a picosecond ultrasonic technique. Using standard values for cell optical index, ultrasound velocities of 1.6±0.1 and 2.0±0.1 μm/ns are measured from several signals recorded in the vacuole and in the nucleus of a single Allium cepa cell, respectively. A 1 μm lateral and 0.25 μm depth resolution is attained.


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