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Time: 10:00-11:30 on Tue., Nov. 30, 2021

Venue:  Zoom Link：619 713 0777  Password:1130

Speaker: Dr. Chris Xu

Host: 孔令杰教授

Title: Multiphoton Microscopy for Imaging Deeper, Wider, and Faster

Abstract：

Multiphoton microscopy has changed how we visualize neurons by providing high-resolution, non-invasive imaging capability deep within intact brain tissue. Multiphoton imaging will likely play a major role in understanding how the brain works at the level of neural circuits. In this talk, in vivo structural and functional imaging of mouse brain using long wavelength excitation and three-photon microscopy will be presented. By quantitative comparison to two-photon microscopy, the application space where 3-photon microscopy outperforms conventional 2-photon microscopy will be defined. In addition, a number of interesting directions, including new laser sources, new spectral windows, optimum illumination schemes, etc., will be presented, and their impact on further improving the imaging depth, volume, or speed in biological tissues will be quantified.

Biography：

Chris Xu is the IBM Endowed Chair Professor of Engineering at Cornell University. He is the Director of the School of Applied and Engineering Physics, the founding co-director of Cornell Neurotech, and the director of Cornell NeuroNex Hub, an NSF funded center for developing and disseminating neurotechnology. Prior to Cornell, he was a member of technical staff at Bell Laboratories and pioneered breakthrough development of fiber optic communication systems based on differential phase-shift keying. He received his Ph.D. in Applied Physics, Cornell University. His current research areas are multiphoton microscopy for deep tissue imaging, multiphoton microendoscopy for clinical applications, and fiber-based devices and systems for optical imaging. He has received three teaching excellence awards and the Cornell Engineering Research Excellence Award. He is a fellow of the Optical Society of America, and a fellow of the National Academy of Inventors.