Tin sulfide 3-hexylthiophene Phosphide ForceVolumeMapping Wonseok MagneticPhase nanomechanical Vac HighAcpectRatio neodymium_magnets Alkane Polyethylene SingleCrystal Lateral_Force_Microscopy Conductive AFM Ananth SmallScan self_healing SPMLabs Celebration Sapphire TiO2 Graphene PpLdpe Gallium Laser MESA structure Stiffness Annealed NUS_NNI_Nanocore atomic_layer domain_switching HighResolution membrane PUR