SurfaceChange LDPE Pattern Terrace Stiffness Morphology self-assembly Nanostructure Beads BismuthVanadate Metal-organicComplex Battery CNT WWafer medical SolarCell thermoplastic_elastomers Collagen SingleCrystal Al2O3 pinpoint mode Vacuum Aluminium_Oxide SingleLayer Solar NUS_Physics Bismuth ring shape FFM PvdfBead IIT-chennai PpLdpe Galfenol University_of_Regensburg SmallScan