Stiffness IIT-chennai Sapphire fifber ito_film Gallium pinpoint mode Magnetostrictive sputter CastIron Hafnia Croatia Chloroform SKKU Hole Bio DLaTGS Polymer ScratchMode Grain BiVO4 Litho Calcite Oxide thermoplastic_elastomers Metal Topography SRAM Mapping Pinpoint PFM MagneticForce SKPM FrictionForce Film PetruPoni_Institute