Our research aims to: 1) Develop disruptive nanoscale sensing technologies that enable the direct visualization of fundamental quantities such as temperature, pH, and external field on working optical/electrical/mechanical devices down to the nanoscale limit. 2) Engineer novel quantum emitters in low-dimensional materials for sensing applications at micro-/nano-scale 3) Explore light-matter interactions at the nanoscale 4) Understand heat transport in nanodevices and nanomaterials