Xiangzhi Yu

yu_pMechanical Engineering
PhD Student

Hopeman 403
xiangzhi [dot] yu [at] rochester [dot] edu

Optical Interferometry, Metrology, Precision Engineering, Instrumentation

I was born in Dexing Copper Mine, Jiangxi, China, which is the largest open-pit copper mine in Asia and the second largest in the world. I graduated with a B.S. in Mechanical Engineering from Huazhong University of Science and Technology, Wuhan, China in 2012. Currently, I am a PhD student in the Department of Mechanical Engineering and my research focuses on Precision Instrumentation. I am leading two main projects currently. One is working with National Institute of Standard and Technology (NIST) and their Watt Balance experiment, which is one proposed method for redefining the Kilogram. My work mainly focuses on correcting the refractive index error in the interferometer measurement, which must have absolute, realtime refractive index correction with measurement uncertainty in the several parts-per-billion. The other project is differential wavefront interferometry, which simultaneously measure the target displacement and changes in pitch and yaw.