Pattern Permalloy Forevision OrganicCompound HiVacuum Nanotechnology Beads F14H20 margarine mono_layer contact neodymium_magnets Sulfur polyvinyl acetate kelvin probe force microscopy CastIron PVAP3HT FloppyDisk Friction HanyangUniv Phthalocyanine INSP Adhesive Lift Aggregated_molecules MechanicalProperties Hair Heat heterojunctions Gold Piranha LiftHeight ConductiveAFM SKKU Singapore