polyvinyl acetate STO PolyvinylAcetate AdhesionEnergy IIT-chennai MagneticPhase chemical_compound Modulus Piezo Ni81Fe19 CompactDisk BariumTitanate Collagen PiezoelectricForceMicroscopy Hysteresys Sadowski PolyimideFilm Epoxy MagneticForceMicroscopy IRDetector TPU TipBiasMode Potential Thermoplastic_polyurethane flakes LifeScience BFO self_healing Hair MechanicalProperty Flake PolymerBlend AIN Lift Co/Cr/Pt