Dr. Yu was trained as a physical chemist and kineticist at the University of Michigan, Ann Arbor, Michigan, USA. She did her postdoctoral research at Brookhaven National Laboratory and Colorado State University, USA. She has been a senior scientist at Pacific Northwest National Laboratory since 2006. She has led the development of a novel mesoscale imaging tool based on microfluidics at PNNL since 2009, which has resulted in two issued patents, a prestigious R&D 100 Awards, and a Federal Laboratory Consortium Technology Transfer Excellence Award. Dr. Yu has developed new concepts in aerosol sampling and led and participated in many field studies for in situ measurements of aerosols. Dr. Yu is the chair of the Department of Energy chemical exposure working group and a member of the TEEL Advisory Group for consequence assessment.