Joseph LEANDRI

Topics

My research topics are centered on the theoretical study of fluid properties in the presence of various objects such as colloids or polymers at the interface. Theses studies could have applications in biophysics, for the shaping of materials, for the transport of particles or for sorting objects by size.

Collaborations

ANR HotSpot member (collaboration with DFG, Germany)

ANR Fermi-NESt member (collaboration with DFG, Germany)

Publications

Last publication (Dernière publication )

Trapping energy of a spherical particle on a curved liquid interface. ( PDF Version HAL )

Joseph Léandri; Alois Würger

Journal of colloid and interface science 2013;405():249-55.

We derive the trapping energy of a colloidal particle at a liquid interface with contact angle θ and principal curvatures c1 and c2. The boundary conditions at the particle surface are significantly simplified by introducing the shift ε of its vertical position. We discuss the undulating contact line and the curvature-induced lateral forces for a single particle and a pair of nearby particles. The single-particle trapping energy is found to decrease with the square of both the total curvature c1+c2 and the anisotropy c1-c2. In the case of non-uniform curvatures, the resulting lateral force pushes particles toward more strongly curved regions.

Curriculum vitae

Date of birth and birthplace : 26 march 1957 in BASTIA

Qualifications:

CAPES de Sciences Physiques, 1981

Agrégation de Physique, 1984

DEA de Physique Nucléaire et des Particules, Université Joseph Fourier, GRENOBLE, 1985

Doctorat (PhD) de l’Université Joseph Fourier, GRENOBLE, 1987

Habilitation à diriger des recherches, Université BORDEAUX I, 2000

Positions

1988 Chargé de Recherche au CNRS (CNRS searcher)  (Section 02), ISN GRENOBLE

1989 Maître de conférence (Associate Professor) (29éme Section du CNU)