AM-FM modulus mapping on PS-PCL polymer blend using blueDrive photothermal excitation

AM-FM viscoelastic modulus mapping of polystyrene (PS) / polycaprolactone (PCL) polymer thin film on mica. Image was taken using blueDrive photothermal excitation on a Cypher S AFM at 2 Hz. Scan sizes are 5 µm (left) and 2 µm (right).