Figure 4: Nanomechanical maps of soft polymers.
The same tip is used to map PDMS samples of different elastic moduli. (a) Topography (apparent) of a PDMS sample of a nominal EPDMS1 =3.5 MPa (scale bar, 50 nm). (b) Topography (apparent) of a PDMS sample of a nominal EPDMS2=2.5 MPa (scale bar, 50 nm). (c) Map of the elastic modulus of PDMS1 (scale bar, 50 nm). (d) Map of the elastic modulus of PDMS2 (scale bar, 50 nm). (e) Map of the viscosity of PDMS1 (scale bar, 50 nm). (f) Map of the viscosity of PDMS2 (scale bar, 50 nm). (g) Histogram of the elastic modulus. (h) Histogram of viscous coefficient.
