PDMS Crystal WS2 flakes LightEmission Optoelectronic EvatecAG Lateral_Force_Microscopy thermal_property LiBattery Hafnium_dioxide temp PatternedSapphireSubstrat Nanofiber AmplitudeModulation Magnetic Force Microscopy light_emitting BloodCell Steps FAPbI3 Film LiNbO3 Litho ForceVolumeImage Al2O3 Deposition Oxidation NanoLithography Lattice Biology heterojunctions Chloroform Chromium temperature controller AFM CeNSE_IISc