Renmin University of China

About: Renmin University of China is a education organization based out in Beijing, Beijing, China. It is known for research contribution in the topics: China & Population. The organization has 11325 authors who have published 15498 publications receiving 238419 citations. The organization is also known as: Renmin University & People's University of China.

Pitching Novel Ideas to the Boss: The Interactive Effects of Employees’ Idea Enactment and Influence Tactics on Creativity Assessment and Implementation

Abstract: Employees’ creative ideas often do not receive positive assessments from managers and, therefore, lose the opportunity to be implemented. We draw on Dutton and Ashford’s (1993) issue-selling framew...

Au nanoparticle arrays with tunable particle gaps by template-assisted electroless deposition for high performance surface-enhanced Raman scattering.

Abstract: Surface-enhanced Raman spectroscopy (SERS) with enormous enhancements has shown great potential in ultrasensitive detection technologies, but the fabrication of large-scale, controllable and reproducible substrates with high SERS activity is a major challenge. Here, we report the preparation of Au nanoparticle arrays for SERS-active substrates with tunable particle sizes and interparticle gaps, and the enhancement factor of the SERS signal obtained from 4-mercaptopyridine probe molecules was as high as 107. The experimental data points show the increase of enhancement factor as a function of the ratio of diameter to interparticle gap, which can be explained by the averaged electromagnetic field enhancement model. Furthermore, we demonstrated that this type of substrate merits its high uniformity, high reproducibility and excellent long-term stability. As the fabrication protocol of such a SERS substrate is simple and inexpensive, this substrate may anticipate a wide range of applications in SERS-based sensors.

Common Fermi-surface topology and nodeless superconducting gap of K 0 . 68 Fe 1 . 79 Se 2 and (Tl 0 . 45 K 0 . 34 )Fe 1 . 84 Se 2 superconductors revealed via angle-resolved photoemission

Abstract: We carried out high-resolution angle-resolved photoemission measurements on the electronic structure and superconducting gap of ${\mathrm{K}}_{0.68}$Fe${}_{1.79}$Se${}_{2}$ (${T}_{c}=32$ K) and (Tl${}_{0.45}$K${}_{0.34}$)Fe${}_{1.84}$Se${}_{2}$ (${T}_{c}=28$ K) superconductors. In addition to the electron-like Fermi surface near $M$($\ensuremath{\pi}$,$\ensuremath{\pi}$), two electron-like Fermi pockets are revealed around the zone center $\ensuremath{\Gamma}$(0,0) in ${\mathrm{K}}_{0.68}$Fe${}_{1.79}$Se${}_{2}$. This observation makes the Fermi surface topology of ${\mathrm{K}}_{0.68}$Fe${}_{1.79}$Se${}_{2}$ consistent with that of (Tl, Rb)${}_{x}$Fe${}_{2\ensuremath{-}y}$Se${}_{2}$ and (Tl, K)${}_{x}$Fe${}_{2\ensuremath{-}y}$Se${}_{2}$ compounds. A nearly isotropic superconducting gap $\ensuremath{\Delta}$ is observed along the electron-like Fermi pocket near the $M$ point in ${\mathrm{K}}_{0.68}$Fe${}_{1.79}$Se${}_{2}$ ($\ensuremath{\Delta}~9$ meV) and (Tl${}_{0.45}$K${}_{0.34}$)Fe${}_{1.84}$Se${}_{2}$ ($\ensuremath{\Delta}~8$ meV). The establishment of a universal picture on the Fermi surface topology and superconducting gap in the ${A}_{x}$Fe${}_{2\ensuremath{-}y}$Se${}_{2}$ ($A=\text{K}$, Tl, Cs, Rb, etc.) superconductors will provide important information for understanding the superconductivity mechanism of iron-based superconductors.