ShenYang Film cooling F14H20 Phenanthrene hard_disk_media DOE sputter flakes layers blended polymers CP-AFM non_contact LogAmplifier PVAP3HT Defect Polydimethylsiloxane Vac NUS CVD LateralForceMicroscopy Pores TriGlycineSulphate SPMLabs HfO2 Thermal Hexatriacontane TemperatureControlledAFM LaAlO3 ring shape Wang LithiumNiobate Holes oxide_layer Dopped