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1. Charaterization of 2D matrials

2. Growth of 2D materials

3. Interface/defect/strain/phase engineering

4. Next-generation electronic devices

• “Atomically Precise Graphene Etch Stops for Three Dimensional Integrated Systems from Two Dimensional Material Heterostructures” Nature Communications 9, 3988 (2018)

• “Multi-Terminal Transport Measurements of MoS2 Using van der Waals Heterostructure Device Platform” Nature Nanotechnology 10, 534 (2015)

• “Atomically Thin p-n Junctions with van der Waals Heterointerfaces” Nature Nanotehcnology 9, 676 (2014)

• “Effect of Defects on the Intrinsic Strength and Stiffness of Graphene” Nature Communications 5, 3186 (2014)

• “Grains and Grain Boundaries in Highly Crystalline Monolayer Molybdenum Disulphide” Nature Materials 12, 554–561 (2013)

• “High-Strength Chemical-Vapor–Deposited Graphene and Grain Boundaries” Science 340, 1073-1076 (2013)

• “Controlled Charge Trapping by Molybdenum Disulphide and Graphene in Ultrathin Heterostructured Memory Devices” Nature Communications 4, 1624 (2013)

• “Tightly Bound Trions in monolayer MoS2” Nature Materials 12, 207-211 (2012)

Our research focuses on the fundamental properties of nano-scale materials and technological applications of converged nanomaterials. The main studies include investigation of essential properties of low-dimensional materials, such as electrical, optical and mechanical characteristics and large-area growth for practical applications. By combining these materials, new material systems of heterostructures will be artificially fabricated and studied for optoelectrical and flexible applications.