molecules self-assembled_monolayer LiquidCell DLaTGS Electronics SiliconOxide LDPE Oxide nanomechanical YttriaStabilizedZirconia Au111 YszSubstrate DNA China Bismuth Workfunction FrictionForce Non-ContactMode CNT MoirePattern Vanadate Force-distance CastIron ContactModeDot PetruPoni mechanical property aluminum_nitride Magnetic ConductiveAFM StrontiuTitanate Polyimide Ucl SFAs EPFL Composition