My research interests mainly focus on several directions: (1) Evaluation of the effects of electrostatic and mechanical boundary conditions on the ferroelectric properties of freestanding PbZr0.2Ti0.8O3 (PZT) membranes by interfacing them with different types of base layers. (2) Fabrication of novel ferroelectric field-effect transistor (FeFET) by interfacing transition metal dichalcogenides (TMDCs) channel with top gate of freestanding PZT membranes. (3) Interfacing of monolayer TMDCs with PZT thin films or membranes and explore the effects of ferroelectric domain and domain wall on the second harmonic generation (SHG) signal in the heterostructure. (4) Exploration of the emergence of unconventional behavior such as anomalous Hall effect (AHE) and topological Hall effect (THE) in ferrimagnetic inverse spinel NiCo2O4 (NCO) thin films and free-standing membranes, and the study of magnetic spin textures in the NCO system using scanning probe microscopy. (5) Investigation of the interplay between strain and defects in determining the metallicity, magnetoresistance, and magnetic anisotropy in NCO thin films and freestanding membranes. (6) Study of the high performance of high-power piezoelectric ceramics using substituting and doping method of A-site and B-site cations in perovskite structure and the exploration of mechanism of domain wall motion under high electric field.