AEAPDES SiWafer lithography Ananth Collagen ConductiveAFM atomic_layer Ram PVA light_emitting HOPG Hair TemperatureControllerStage Tungsten Modulus UnivCollegeLondon MembraneFilter BiasMode ScratchMode Vanadate fluoroaalkane Polyaniline Litho ContactModeDot UnivMaryland MfmAmplitude ForceDistanceSpectroscopy Vacuum Inorganic TemperatureControl SingleCrystal NUS_NNI_Nanocore Wafer PDMS DeoxyribonucleicAcid