MAIN RESEARCH INTERESTS of the GROUP
Matière molle, Instabilités et transitions de phases
(soft matter, instabilities and phase transitions)
LANGMUIR FILMS
Development of the Microscopy at the Brewster Angle
Shematic diagram of the microscope at the Brewster angle.
Ob1,Ob2, Ob3, microscope
objectives. L1, L2, L3,
L4, L5, lenses. P: polarizer (Glan),
A: analyzer (Dichroic sheet), Q: quarter wave plate. Rev.Sci.
Instr. 62 (1991)
936 A NEW BREWSTER ANGLE
MICROSCOPE Rev. Sci. Instr. 69
(1998) 1446 Schematic drawing of the objective: it gives
an image in focus in all the plane contrary to the other
types of Brewster angle microscopeswiyh a good resolution
(better than 1 mm) due to its
large numerical aperture.
Example of physics in Langmuir films
Anisotropy of the line tension and bulk elasticity in
two-dimensional drops of mesophases Phys. Rev. Lett. 74
(1995) 2495 Electrostatic pressure and line tension in a
Langmuir monolayer Phys. Rev. Lett.
75 (1995) 2506 Young's modulus and time-lag breaking of a
two-dimensional crystal Nature 356
(1992) 226 Phys. Rev. Lett.
70 (1993) 3565 Dislocation-mediated melting of a two-dimensional
crystal The liquid phase nucleates on dislocations Nature
384 (1996) 145
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