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Welcome to Yuan Zhang’s research group! We specialize in single atom/molecule level investigations and manipulations using low temperature (77K, 4.2K) ultra-high vacuum scanning tunneling microscope (LT-UHV-STM) and qPlus atomic force microscope (Q+AFM). More specifically, we investigate and operate various artificial molecular machines such as single molecule motor, unidirectional propellers, rotors network, and molecular transport devices on materials surfaces. Various 2D materials and molecular systems are also fabricated in-situ and characterized by local spectroscopy of STM/Q+AFM, in seek of novel electrical, magnetic, and mechanical properties. The capability of local chemistry alteration allows a direct engineer on materials property at atomic scale. In addition, by combining the synchrotron radiation with traditional STM, we investigate novel magnetism and charge transfer phenomena at buried interfaces and layered heterostructures. Our research lies in a typical interdisciplinary field that encompasses condensed matter physics, material science, quantum physics, physical chemistry, and nanoscience.