Cross-section PvdfFilm Mechanical Ucl Sperm HydroGel Silver cannabidiol gallium_nitride FailureAnlaysis PatternedSapphireSubstrat UnivCollegeLondon Oxidation Polyethylene Mechinical SrTiO3 light_emitting Bmp PinpointNanomechanicalMode WPlug Thermal kelvin probe force microscopy Floppy LateralForce OxideLayer DIWafer Tungsten_disulfide BTO Blend Alkane Pyroelectric NanoLithography SurfaceOxidation Austenite TCS