Plasmonic nanostructure and devices and Introduction to National Center for Nanoscience and Technology

(I) Surface plasmon polaritons (SPPs) have shorter wavelengths and stronger field enhancement, confined to the dielectric-metal interface, in comparison with light and have been widely used in nano-optics, resonance sensing and imaging, including surface plasmon focusing. However, the low conversion efficiency and high propagation loss of SPPs limit its use. Controlling the propagation direction of SPPs by using nanostructures on metal surfaces is important. The manipulating of the focusing and polarization in plasmonic nanostructures is the key problems. In this lecture, we will introduce the principle and experimental of Near-field Optics, and then report the recent progress in the following aspects at Plasmonic-SNOM group, Peking University:

* Surface Plasmons in Metal

Magnetic Fano Resonance; Toroidal Dipolar Resonance; Active Control of Graphene-Based Unidirectional Surface Plasmon Launcher

* Surface Plasmons in 2D materials

Plasmonic hot electron induced structural phase transition in MoS2 monolayer; Graphene quantum dots doping of monolayer MoS2; Active Plasmonic Tuning of MoS2 Absorption and Luminescence

* Plasmonic circular polarization and Focusing surface plasmon polaritons in Archimedes’ nanostructure

(II) Nanotechnology becomes a worldwide important area. To face the challenge, China has established several key institutions around the country. One of the most important one is the National Center for Nanoscience and Technology, which is a highly interdisciplinary research institute, with the initial members of Peking University, Tsinghua University and Chinese Academy of Sciences. After 10 years of construction and running, the Center becomes the best nanotechnology research center of the country, with young scientists of physics, chemistry, biology, information, material science and medical-pharmaceuticals. We will show you the recent activities of this dynamic center.

About the Speaker:

Prof. Xing ZHU (朱星) is the leader of the Plasmonics-SNOM group of School of Physics, Peking University. He obtained Ph.D. of Natural Science at University of Saarland, Germany in 1986 and M.Sc. at University of Toronto, Canada in 1983. He has been working with scanning probe microscopy with special interests in near-field optical microscopy, the structure analysis of nanomaterials, basic theory of surface plasmon polariton and the application of Plasmonics. He was the Chair of 2nd APNFO (1999), the Chair of 10th NFO-international conference for Near-field Optics (2010). He is the council member of Chinese Physical Society, the council member of Association for Asia-Pacific Physical Societies, Member of IUPAP, Commission C2 and Expert of ISO TC229 Nanotechnologies.

Prof. Zhu is also The Deputy Direction of National Center for Nanoscience and Technology, representing Peking University.