Silicon Sulfur Optic ring shape LDPE SolarCell #EC Logo oxide_layer HOPG Dental Resistance Semiconductor Pattern ForceMapping FrictionForce NUSNNI PrCurve DomainSwitching PVAP3HT HafniumDioxide Calcite PvdfBead Tungsten FailureAnlaysis Piezoresponse mono_layer KAIST ScanningThermalMicroscopy Imprint temp_control single_layer SKPM Scanning_Thermal_Microscopy Regensburg