FAPbI3 fluoroaalkane Pattern 2dMaterials Mechanical&nanotechnology LowDensityPolyethylene Conducting cross section Polytetrafluoroethylene GaP Bismuth Ceramics HydroGel LiNbO3 Graphite Conduct BCZT HexagonalBoronNitride vertical_PFM CntFilm AdhesionEnergy Reduction FrictionalForce Fet PUR VinylAlcohol SicMosfet BiFeO3 AAO SurfaceOxidation Roughness SiWafer FastScan MultiferroicMaterials Mosfet