biocompatible ContactModeDot Hydroxyapatite Magnetic Force Microscopy molecule ScanningTunnelingMicroscopy Polypropylene Fe_film Copolymer lithography MagneticForce IcelandSpar cannabidiol Butterfly Morphology ConductiveAFM Oxidation MonoLayer CancerCell temperature_control small_scan membrane Potential LithiumNiobate Wang TemperatureControl molecular_beam HOPG Nanofiber MagneticArray BFO cannabinoid AIN CrossSection PMNPT