Polymer GaN ConductiveAFM Cobalt HexagonalBN Mosfet Silicon Ito 3-hexylthiophene MLCC AEAPDES SAM Hafnium_dioxide sputter KelvinProbeForceMicroscopy Copper LifeScience Chloroform Tungsten molecular_beam MoirePattern IIT-chennai CVD Insulator Sperm self-assembly Dimethicone temp Pinpoint PFM LateralForce Inorganic_Compound China SolarCell ForceVolume ring shape