MicroMegascope based dynamic surface force apparatus

A surface force apparatus for nanorheology under large shear strain

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Surface force apparatus for nanorheology under large shear strain.

We describe a surface force apparatus designed to probe the rheology of a nanoconfined medium under large shear amplitudes (up to 500 microm). The instrument can be operated in closed loop, controlling either the applied normal load or the thickness of the medium during shear experiments. Feedback control allows us to greatly extend the range of confinement/shear strain attainable with the surf...

A surface force apparatus for nanorheology under large shear strain

Extending the surface force apparatus capabilities by using white light interferometry in reflection

Study of DNA adsorption on mica surfaces using a surface force apparatus

We report our studies on the adsorption properties of double-stranded DNA molecules on mica surfaces in a confined environment using a surface force apparatus. Specifically, we studied the influence of cation species and concentrations on DNA adsorption properties. Our results indicated that divalent cations (Mg(2+) and Co(2+)) preferred to form uniform and moderately dense DNA layers on a mica...