Xiaohui ________________________________ From: Xiaohui Xu Sent: Monday, August 23, 2021 9:59:20 AM To: Bnc-grads-list <bnc-grads-list-bounces@ecn.purdue.edu> Subject: Prof. Mordechai Segev's lecture on Topological Photonics-August 24th-11:30am EST Dear all, Please join us in a great opportunity to hear a pioneer in the field of topological photonics give a lecture on the topic. See the attached flyer for details. Cheers, Xiaohui