Optical ring shape light_emitting Roughness Subhajjit Pyroelectric PetruPoni_Institute Friction Hair MechanicalProperties Hole Fendb Nanotechnology lift_mode Litho Reduction small_scan Mechinical Led medical CP-AFM Mobile pulsed_laser_deposition WS2 Adhesive Bio VinylAlcohol Typhimurium phase_change Water molecular_beam LiquidCell Conductive AFM Battery LDPE