[7a-A404-1~8] 4.6 Nanocarbon and 2D Materials

▲ [7a-A404-5] [JSAP-OSA Joint Symposia 2017 Invited Talk] Optical Spectroscopy of Individual Nano-materials
with Defined Atomic Structure

〇Kaihui Liu¹ (1.Peking University)

Keywords:Nano-materials, Optical

When the characteristic length of a material shrink to 1 nm scale, many distinct physical phenomena, such as quantum confinement, enhanced many-body interactions, strong van der Waals inter-material couplings and ultrafast charge separation, will appear. To investigate the related fascinating low-dimensional physics, we need a tool to quantitatively link the atomic structures to the physical properties of these very small nano-materials. In this talk, I will introduce our recently developed in-situ TEM + high-sensitive ultrafast nanooptics technique, which combines capability of structural characterization in TEM and property characterization in nanooptics on the same individual nano-materials. Several examples of using this technique to study the 1D carbon nanotube system and 2D atomic layered systems will be demonstrated.


References:
Kaihui Liu, Steven G. Louie, Enge Wang*, Feng Wang* and et al. “An atlas of carbon nanotube optical transitions”, Nature Nanotechnology 2012, 7, 325-329.
Kaihui Liu, Feng Wang* and et al., “High-throughput Optical Imaging and Spectroscopy of Individual Carbon Nanotubes in Devices”, Nature Nanotechnology 2013, 8, 917-922.
Kaihui Liu, Enge Wang, Feng Wang* and et al., “Van der Waals-Coupled Electronic States in Incommensurate Double-walled Carbon Nanotubes”, Nature Physics 2014, 10, 737-742.
Xu Zhou, Jingxin Cheng, Yubing Zhou, Shiwei Wu*, Hailin Peng*, Kaihui Liu* and et al., “Strong Second-Harmonic Generation in Atomic Layered GaSe”, JACS 2015, 137, 7994-7997.