Understanding suspension rheology of anisotropically-charged platy minerals from direct interaction force measurement using AFM

► Demonstrate importance of measuring anisotropic surface charge properties of clays ► Determine surface (Stern) potentials of talc basal planes and edge surfaces using AFM probe ► Calculate interaction energy between edge-edge, edge-basal and basal-basal planes ► Interpret yield stress of talc suspension with calculated interaction energy profile