1. Thin film synthesis，including pulsed laser deposition (PLD), magnetic sputtering. 2. Advanced uncooled infrared detection materials and devices，strongly correlated electronic materials, including colossal magnetoresistance materials and high temperature superconducting materials. 3. Spintronics, magnetism and magnetotransport property of magnetic oxides and their heterostructures. 4. Topological domain structures and novel domain walls in ferroelectric and multiferroic thin films.