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Boundary lubrication of nanometer thick model phospholipid layers

An original experimental setup was developed coupling together tribology and molecular velocimetry experiments. In air environment, we achieve to measure the lateral mobility of nanometer-thick model phospholipid layers (3 nm ≤ thickness ≤ 10 nm) confined between a millimetric spherical tip sliding on a flat surface (contact radius > 100 μm).

Research interests :
- Study the influence of relative humidity on shearing responses of model phospholipid layers and compare these experimental data to a numerical analysis that has started in parallel (collaboration C. Loison, ILM, Lyon) ;
- Study biolubrication mechanisms in liquid environment (healthy and pathological model synovial fluids depending on the surface waviness of a model artificial meniscus.

Collaborations :
- Institut Lumière Matière, Lyon, France.
- Laboratoire de Mecanique des Contacts et des Structures - INSA de Lyon, France,
- Institut Multidisciplinaire de Biochimie des Lipides (IMBL) - INSA de Lyon.
- Within ICS : M3, SAMS.

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