Yanguang Nie

Coordination-Resolved Electron Spectrometrics

Xinjuan Liu,† Xi Zhang,‡ Maolin Bo, Lei Li, Hongwei Tian, Yanguang Nie, Yi Sun, Shiqing Xu,*,† Yan Wang,* Weitao Zheng,* and Chang Q Sun* †Institute of Coordination Bond Metrology and Engineering, College of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, China ‡Institute of Nanosurface Science and Engineering, Shenzhen University, Shenzhen 518060, China Key Laboratory of Low-Dimensional Materials and Application Technologies (Ministry of Education) and School of Materials Science and Engineering, Xiangtan University, Hunan 411105, China School of Materials Science, Jilin University, Changchun 130012, China School of Science, Jiangnan University, Wuxi 214122, China Harris School of Public Policy, University of Chicago, Chicago, Illinois 60637, United States School of Information Technology, Hunan University of Science and Technology, Xiangtan 411201, China NOVITAS, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore

A unique art purifying the atomic scale, zone selective, and quantitative information of bonding and electronic dynamics at sites surrounding defects, surfaces, and interfaces

With the theory[1–4] enabled technology, we have been able to purify information from zones up to two atomic spacings regarding the evolution of the bond length, bond strength, energy density, and the energetic behavior of the localized core and valence electrons by filtering out the bulk and background information, which enabled us to identify the direction of charge flow in the catalytic reactions between the gaseous specimens and the Rh and Pt adatoms catalysts,[5] and between the gaseous specimens and the CuPd and AgPd nanoalloys.[6] With the special technique, we have also been able to clarify that the Dirac-Fermi polarons detected using STM/S as high protrusions with resonance at Fermi energy as arising from the polarization of the unpaired dangling-bond electrons by the undercoordination-induced local densification and quantum entrapment of the energetically low-lying electrons, which in turn screen and split the crystal potential adding another extra component in the upper edge of the core band.