Plasmonic nanostructure and devices, and Introduction to National Center for Nanoscience and Technology of China

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 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 SPPs in Archimedes’ nanostructure.

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 is also the Deputy Director of National Center for Nanoscience and Technology, representing Peking University. 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 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.