ChengWei Qiu 教授简介：
Prof. Cheng-Wei Qiu received his B.Eng. and Ph.D. degrees in 2003 and 2007, respectively. He was a Postdoctoral Fellow at Physics Department in MIT till the end of 2009. Since December 2009, he joined NUS as an Assistant Professor and was promoted to Associate Professor with tenure in Jan 2017. From 1st Jan 2018, he was promoted to Dean’s Chair in Faculty of Engineering, NUS. He was the recipient of the SUMMA Graduate Fellowship in Advanced Electromagnetics in 2005, IEEE AP-S Graduate Research Award in 2006, URSI Young Scientist Award in 2008, NUS Young Investigator Award in 2011, MIT TR35@Singapore Award in 2012, Young Scientist Award by Singapore National Academy of Science in 2013, Faculty Young Research Award in NUS 2013, OSA Young Investigator Award 2017, and Young Engineering Research Award 2018 in NUS. He has managed over 10 million grants as Lead PI, and 6 million grants as co-PI. His research is known for the structured light for beam manipulation and nanoparticle manipulation. He has published over 160 peer-reviewed journal papers so far, including Science, Science Advances, Nature Photonics, Nature Communications, Advanced Materials, PRL, ROPP, Light: Sci. Adv., etc. He has given quite a few Keynotes in international conferences. He has been serving in Associate Editor for various journals such as EPJ, Scientific Reports, JOSA B, and Guest Editor for ACS Photonics, Light: Sci. Appl., and General Chairs, Symposium Chairs, and TPC Chairs in various international conferences.
题目：Tractor Beam, Lateral Force, and Beyond
报告摘要：This talk will demonstrate fundamental physics and origin, as well as experimental results, of extraordinary optical force phenomena, including negative pulling force, tunable lateral force, chiral force, negative radiation torque, and graphene nanoconveyor. A comprehensive insight will be provided toward how to structure the light beams and how to tailor light-matter interaction to realize functionalized micromanipulations. Novel materials, like phase-change materials, chiral, and graphene, are also explored as new means. We also extend the previous micromanipulation toward nanomanipulation for sub-1nm particles. Biomedical applications such as single-bacteria quantification and bio-compatible nanoprobing are to be reported. Furthermore, we shed a light to the recent advance in metasurface as a promising technology to structure complex lights so as to provide unexpected manipulation of nanoparticle.
题目：Metasurface Hologram, nanoprint, and vortices
报告摘要：We experimentally report our recent progress on developing high-capacity and advanced holographic metasurfaces, metasurface nanoprints, and vortex metasurfaces. Compared with traditional lens, such flat devices take the advantage from its ultrathin trait to realize the helicity-dependent optical vortex focusing metalens (consisting of 306,306 rotating nano-voids) that focuses three longitudinal vortices with distinct topological charges at different focal planes. The designed metasurface may find potential applications in multi-plane simultaneously particles manipulation, angular-momentum-based quantum information processing and integrated nano-optoelectronics. In the meantime, on-chip discrimination scheme of detecting the orbital angular momentum of light was experimentally demonstrated to focus the surface plasmons to different lateral positions, with reliable 120 nm lateral shift between any two neighbouring topological charges of the incident vortex light. On the other hand, we also demonstrate how to incorporate multiple holographic images into one metasurface, via nonlinearity, spatial multiplexing, random phase mask, etc. Overall, those two major applications of metasurface may serve as competitive alternative to generate OAMs and holograms from traditional methods.
报告摘要：I will report some of the most recent developments in my group as well as in the field of the interfacial engineering of manipulation of light-matter interactions, via the artificially constructed structures of ultrathin thickness compared to the wavelength. In particular, the low-dimension and high-frequency scaling may promise a lot more interesting applications, while the challenges in design principle and fabrication capability will become critical limits. Nano-patterned surfaces to modulate and structure novel light behavior will be studied and the following advanced functionalities will be discussed: 3D meta-hologram, high-pixelated nanoprinting, dynamic OAM generation, and more interestingly, the 2D-material meta-lens of atomic thickness, etc. Our work paves a roadmap to design sophisticated and advanced optical devices, with low dimension, miniaturization, randomness, and scaled-up capability.