CuParticle Chungnam_National_University ContactMode Photovoltaics Ucl MonoLayer thermoplastic_elastomers MultiLayerCeramicCapacitor HiVacuum CuFoil lithography Mfm Croatia ScanningKelvinProbeMicroscopy FrictionalForceMicroscopy SFAs Temasek_Lab Sphere contact vertical_PFM TungstenDeposition Sperm Display Polydimethylsiloxane Indium_tin_oxide ForceMapping SThM EPFL OpticalWaveguide Boron Fluoride Friction Tungsten UnivCollegeLondon Cancer