r e s e a r c h
Characterization of 2D materials
We specialize in the comprehensive characterization of 2D materials, encompassing electrical, optical, and mechanical properties. This includes precise measurements using Atomic Force Microscopy (AFM) for mechanical analysis and charge transport studies. We also employ photoluminescence measurements to observe exciton complexes and analyze the band structure in both pristine 2D materials and their heterostructures. Additionally, we investigate the influence of electrostatic and magnetic fields on the properties of these materials. The characterization of 2D materials elucidates fundamental physical phenomena, advancing knowledge in condensed matter physics and nanotechnology. Our precise measurements and analyses pave the way for tailored applications in electronics, photonics, and quantum computing, promising high-performance devices and innovative technologies.
Investigation of 2D crystal structures
We delve into the structural aspects of 2D materials, including surface functionalization, phase transitions, and defect analysis. Recently, we explore methods to modulate twisted van der Waals heterostructures and control interlayer interactions to tailor the properties of 2D materials for specific applications. By investigating structural intricacies and modulation techniques, our research not only expands our understanding of 2D materials but also lays the foundation for developing customizable materials with enhanced functionalities, driving innovation across various technological domains.
Growth of 2D materials and fabrication processing
Our group is at the forefront of large-scale growth techniques for 2D materials, employing chemical vapor deposition and epitaxial/hypotaxial growth methods. We study growth mechanisms and develop processes for large-area patterning and complex 3D structure fabrication. Furthermore, we focus on deposition control of bulk materials on 2D substrates and develop stacking and transfer techniques for van der Waals heterostructures. Our work in large-scale growth techniques and precise control over material deposition accelerates the development of 2D materials, enabling the fabrication of complex structures essential for advanced electronic and optoelectronic devices, fostering innovations in next-generation technologies.
Next-generation electronic devices
We fabricate advanced electronic devices utilizing van der Waals heterostructures, resulting in flexible, transparent, and multi-functional devices. We develop fabrication processes for seamless integration of 2D devices and engineer low-resistance contacts for enhanced performance. Our research extends to synaptic devices for neuromorphic computing, light-emitting devices, and advanced optoelectronic devices leveraging exciton complexes. Additionally, we explore logic-in-memory computing concepts based on 2D materials.
Advanced battery materials
We focuse on the fabrication of graphene-coated Si anodes and the creation of nanopores in graphene for Li-ion battery applications. We functionalize graphene to control surface properties in anode materials and develop graphene-enhanced separators/filters. These efforts contribute to the development of advanced battery technologies with improved performance and stability.