Shandong Normal University

About: Shandong Normal University is a education organization based out in Jinan, Shandong, China. It is known for research contribution in the topics: Laser & Catalysis. The organization has 12378 authors who have published 12576 publications receiving 174572 citations.

The 2020 China report of the Lancet Countdown on health and climate change.

Abstract: Wenjia Cai*, Chi Zhang*, Hoi Ping Suen*, Siqi Ai, Yuqi Bai, Junzhe Bao, Bin Chen, Liangliang Cheng, Xueqin Cui, Hancheng Dai, Qian Di, Wenxuan Dong, Deijing Dou, Weicheng Fan, Xing Fan, Tong Gao, Yang Geng, Dabo Guan, Yafei Guo, Yixin Hu, Junyi Hua, Cunrui Huang, Hong Huang, Jianbin Huang, Tingting Jiang, Kedi Jiao, Gregor Kiesewetter, Zbigniew Klimont, Pete Lampard, Chuanxi Li, Qiwei Li, Ruiqi Li, Tiantian Li, Borong Lin, Hualiang Lin, Huan Liu, Qiyong Liu, Xiaobo Liu, Yufu Liu, Zhao Liu, Zhidong Liu, Zhu Liu, Shuhan Lou, Chenxi Lu, Yong Luo, Wei Ma, Alice McGushin, Yanlin Niu, Chao Ren, Zhehao Ren, Zengliang Ruan, Wolfgang Schöpp, Jing Su, Ying Tu, Jie Wang, Qiong Wang, Yaqi Wang, Yu Wang, Nick Watts, Congxi Xiao, Yang Xie, Hui Xiong, Mingfang Xu, Bing Xu, Lei Xu, Jun Yang, Lianping Yang, Le Yu, Yujuan Yue, Shaohui Zhang, Zhongchen Zhang, Jiyao Zhao, Liang Zhao, Mengzhen Zhao, Zhe Zhao, Jingbo Zhou, Peng Gong

3D SERS substrate based on Au-Ag bi-metal nanoparticles/MoS 2 hybrid with pyramid structure

Abstract: It is very vital to construct the dense hot spots for the strong surface-enhanced Raman scattering (SERS) signals. We take full advantage of the MoS2 edge-active sites induced from annealing the Ag film on the surface of the MoS2. Furthermore, the composite structure of Au-Ag bi-metal nanoparticles (NPs)/MoS2 hybrid with pyramid structure is obtained by the in situ grown AuNPs around AgNPs, which serves the optimal SERS performance (enhancement factor is ~9.67 × 109) in experiment. Due to the introduction of AuNPs with the simple method, the denser hot spots contribute greatly to the stronger local electric field, which is also confirmed by the finite-different time-domain (FDTD) simulation. Therefore, the ultralow limit of detection (the LOD of 10-13 and 10-12 M respectively for the resonant R6G and non-resonant CV), quantitative detection and excellent reproducibility are achieved by the proposed SERS substrate. For practical application, the melamine molecule is detected with the LOD of 10-10 M using the proposed SERS substrate that has the potential to be a food security sensor.

A quantum chemistry approach for current–voltage characterization of molecular junctions

Abstract: Based on the elastic-scattering Green's function theory, we have developed an approach to characterize the electron transport process in molecular devices, thereby allowing descriptions of the couplings between the molecule and metals at the hybrid density functional theory level. Two molecular devices with benzene-1,4-dithiol and α,α′-xylyl dithiol molecules embedded between two gold electrodes have been studied at the correlated hybrid density functional theory level. The calculated current–voltage characteristics are in very good agreement with existing experimental results, indicating the vital importance of the electron correlation effects in the electron transport. We have also examined the existence of one electron reduction and its effects on the current–voltage characteristics.