Sphere SThM Bio single_layer FailureAnlaysis SiWafer SRAM CrossSection Varistor TCS small_scan LateralForce vertical_PFM CuParticle nanobar Mfm DiffractiveOpticalElements polymeric_arrays EPFL Sapphire Water polyvinyl acetate LDPE Iron CopperFoil Electrode Composite ThermalConductivity ShenYang HexacontaneFilm CVD Pores Nanofiber Pattern RedBloodCell