Professor Yu heads the Nanoscale Characterization and Devices Laboratory at UCSD, which is concerned generally with the characterization, understanding, and application of physical phenomena and of material and device properties at nanometer to atomic length scales. Research activities in his laboratory focus on advanced semiconductor materials and devices, and also include the investigation of nanometer-scale properties of thin-film magnetic materials and of novel nanoscale structures for use in chemical and biological sensors...A major current effort in his research group is directed towards Group III-nitride semiconductor materials and device technologies, which are of enormous interest for use in visible light emitters for applications ranging from high-density data storage to solid-state lighting, and in high-speed, high-power electronics for communications and related applications. Additional projects in Yu's research group focus on exploration of materials and concepts in the emerging area of spin-based electronics, and on the design, fabrication, and application of nanoscale electronic and photonic device structures for chemical and biological sensors. His laboratory is also one of the leaders worldwide in the development and application of proximal probe imaging techniques, and uses these techniques extensively to study a broad range of materials and device structures at the nanometer scale
| 
