Figure 5From: Motion and twisting of magnetic particles ingested by alveolar macrophages in the human lung: effect of smoking and diseaseDiscrete reverse particle twist after pulse field alignment and 2 min. of relaxation. The pure viscous element (viscosity η1) describes the non-recoverable strain and the viscoelastic element (viscosity η2, elastic modulus ν2) describes the elastic recoil behavior of the magnetic microparticles within macrophages.Back to article page