I am Ming Xia, a PhD researcher majoring in materials science and engineering, with two core research directions: deep-UV nonlinear optical fluorooxoborate crystals, and single-crystal van der Waals epitaxial heterostructures based on 2D/3D perovskites. I possess comprehensive expertise covering single-crystal synthesis, X-ray crystallographic analysis, low-dimensional semiconductor epitaxial growth, atomic-scale 4D-STEM characterization, and optoelectronic device development. My representative breakthrough is realizing coherent van der Waals epitaxy of tin-based perovskite single-crystal heterostructures and directly imaging the nanoscale molecular cushion that buffers lattice strain at interfaces, which was published in Nature Nanotechnology. I also developed kinetic Wulff heteroepitaxy for pure-phase 2D perovskite lateral heterostructures, reported in Nature Synthesis. I have rich experience designing and fabricating perovskite optoelectronic devices with record rectification performance and geometry-induced chiral luminescence. My research interests center on developing defect-free epitaxial growth methodologies for van der Waals semiconductors, and advancing their applications in optoelectronics and quantum technology. I have published over 17 peer-reviewed papers in high-impact journals and hold multiple authorized and pending invention patents on optical crystals and perovskite epitaxial materials.