Switching Hair Yeditepe Piezo Varistor 2d_materials OpticalModulator ForceDistanceSpectroscopy Nanotechnology Inorganic_Compound AtomicLayer PolyvinylAcetate hard_disk SThM exfoliate Jason fluoroaalkane Aluminum LateralForce Graphite Biofilm NusEce Composition Sidewall self_assembly Barium_titanate CuParticle semifluorinated_alkanes ElectroDeposition pulsed_laser_deposition CuSubstrate PANI IVSpectroscopy VortexCore mechanical property