Cross-section EvatecAG chemical_compound CuParticle DomainSwitching CVD F14H20 multi_layer ring shape BCZT Hafnium_dioxide Biology University_of_Regensburg mfm_amplitude Graphite Patterns tip_bias_mode LiIonBattery Magnets Global_Comm Varistor Conduct Polyvinylidene Modulus MonoLayer HanyangUniv conductive Collagen ForceVolumeMapping nanomechanical ForceVolume LightEmiting Piezo Hexylthiophene CNT