On April 22, 2004, at the invitation of Prof. Yasuhiko Arakawa of the University of Tokyo, the Chairman of the International Conference on Nano-photonics and Nano-optoelectronics (ICNN '2024), Prof. Yidong Huang attended the conference and gave a keynote speech entitled "On-chip Perceptual Technology with New Physical Mechanisms". Focusing on the new on-chip sensing technology, the latest research progress in spectral imaging, phonon mass sensing and phonon exceptional point were introduced, which attracted the attention and heated discussion of the participants.

ICNN is a specialized conferenc of the Optics & Photonics International Congress (OPIC), which is held in Yokohama, Japan, every April. Since 2012, the number of participants has continuously increased and has grown into one of the largest international conferences. The "Optics and Photonics International Exhibition" held at the same time as the society brings together researchers and scholars from all over the world to display and exchange the latest scientific research results and industrial developments in the field of optics and photonics.