Zhi Pyroelectric Grain Hafnia FrictionForce University_of_Regensburg Galfenol Patterns Flake Copolymer IRDetector Piezoresponse StainlessSteel LeakageCurrent Optic Battery PS_LDPE alkanes STO SPMLabs Tungsten_disulfide AtomicSteps IMT_Bucharest Nanostructure CrystalGrowing Hafnium_dioxide silicon_oxide CuFoil Memory HanyangUniv VinylAlcohol Crystal TCS MonoLayer hetero_structure