PolymerBlend Hydroxyapatite ForceVolumeMapping MfmAmplitude SICM GalliumPhosphide FM_KPFM BismuthVanadate hydrocarbon ScanningKelvinProbeMicroscopy organic_polymer Imprint Vortex Optic MagneticPhase Oxidation FrictionForce P3HT Worcester_Polytechnic_Institute TappingMode PDMS Calcium Indium_tin_oxide mechanical_property Mobile Melt Organic TemperatureControl Writing multi_layer DataStorage AnodizedAluminumOxide DomainSwitching StyreneBeads Spain