VortexCore FrictionalForceMicroscopy Typhimurium flakes Temasek_Lab norganic Patterns LFM C_AFM Carbon LiftMode alkanes HanyangUniv HardDiskMedia LithiumNiobate Fet PVAC self-assembly mechanical property light_emission HighAcpectRatio PS_LDPE MfmAmplitude PhaseChange Morphology semifluorinated alkane Tape Sic LateralForce CalciumHydroxyapatite PhaseImaging IRDetector PolyvinylAcetate NTU Indium_tin_oxide