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1,188 results on '"Wang, Rongming"'

151. Well-aligned Nickel Nanochains Synthesized by a Template-free Route

Author

Chen Weimeng, Chen Chinping, Gao Xingyu, Wee ATS, Li Pengwei, and Wang Rongming

Subjects
Ni nanostructure, Magnetic anisotropy, X-ray absorption spectroscopy, Electron microscopy, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

Abstract Highly uniform and well-aligned one-dimensional Ni nanochains with controllable diameters, including 33, 78, and 120 nm, have been synthesized by applying an external magnetic field without any surface modifying agent. The formation can be explained by the interactions of magnetic dipoles in the presence of applied magnetic field. Magnetic measurements demonstrate that the shape anisotropy dominates the magnetic anisotropy. The demagnetization factor, ∆N, is in the range of 0.23–0.36.

Published
2009
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155. Interface structure and strain controlled Pt nanocrystals grown at side facet of MoS2 with critical size.

Author

Zhu, Yuchen, Sun, Yinghui, Zhang, Hongzhou, He, Yang, Liu, Wei, and Wang, Rongming

Abstract

The heterostructure of transition metal nanocrystal on two-dimensional (2D) materials exhibits unique physical and chemical properties through various interfacial interactions. It has been established that the atomic structure and strain in the vicinity of the interface determine the band structure and phonon modes of the nanocrystal, regulating the optical and electrical properties of such heterostructures. Hence, metal—support interfacial engineering is a demonstrated approach to acquiring desired properties of the nanocrystals. However, a fundamental understanding of the interfacial structures remains elusive and precise control of the interactions has yet achieved. Herein, we explore the regulation of interface on MoS2 supported Pt nanocrystals which were prepared by reducing ultrasonic dispersed potassium chloroplatinate. The Pt-MoS2 heterostructure interface was systematically studied by aberration corrected transmission electron microscopy. Three types of Pt-MoS2 interfaces with distinct atomic configurations were identified. The strain within the Pt nanocrystals is sensitive to the atomic configuration of the supporting MoS2, which regulates the size of the Pt nanocrystals. These results provide insights on tuning of nanocrystal strain, paving the way for precise control of 2D semiconductor heterostructures. [ABSTRACT FROM AUTHOR]

Published
2022
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165. Back Cover: One‐step Ethylene Purification from an Acetylene/Ethylene/Ethane Ternary Mixture by Cyclopentadiene Cobalt‐Functionalized Metal–Organic Frameworks (Angew. Chem. Int. Ed. 20/2021)

Author

Wang, Yutong, primary, Hao, Chunlian, additional, Fan, Weidong, additional, Fu, Mingyue, additional, Wang, Xiaokang, additional, Wang, Zhikun, additional, Zhu, Lei, additional, Li, Yue, additional, Lu, Xiaoqing, additional, Dai, Fangna, additional, Kang, Zixi, additional, Wang, Rongming, additional, Guo, Wenyue, additional, Hu, Songqing, additional, and Sun, Daofeng, additional

Published
2021
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166. Rücktitelbild: One‐step Ethylene Purification from an Acetylene/Ethylene/Ethane Ternary Mixture by Cyclopentadiene Cobalt‐Functionalized Metal–Organic Frameworks (Angew. Chem. 20/2021)

Author

Wang, Yutong, primary, Hao, Chunlian, additional, Fan, Weidong, additional, Fu, Mingyue, additional, Wang, Xiaokang, additional, Wang, Zhikun, additional, Zhu, Lei, additional, Li, Yue, additional, Lu, Xiaoqing, additional, Dai, Fangna, additional, Kang, Zixi, additional, Wang, Rongming, additional, Guo, Wenyue, additional, Hu, Songqing, additional, and Sun, Daofeng, additional

Published
2021
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167. One‐step Ethylene Purification from an Acetylene/Ethylene/Ethane Ternary Mixture by Cyclopentadiene Cobalt‐Functionalized Metal–Organic Frameworks

Author

Wang, Yutong, primary, Hao, Chunlian, additional, Fan, Weidong, additional, Fu, Mingyue, additional, Wang, Xiaokang, additional, Wang, Zhikun, additional, Zhu, Lei, additional, Li, Yue, additional, Lu, Xiaoqing, additional, Dai, Fangna, additional, Kang, Zixi, additional, Wang, Rongming, additional, Guo, Wenyue, additional, Hu, Songqing, additional, and Sun, Daofeng, additional

Published
2021
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184. Controllable Synthesis of Atomically Thin 1T‐SnSe2 Flakes and Its Linear Second Harmonic Generation with Layer Thickness.

Author

Fu, Jiatian, Zhao, Liyun, Zhou, Liang, Wu, Kang, Du, Jiaxing, Wang, Xiangzhuo, Song, Jiepeng, Zhu, Lijie, Zhou, Fan, Huan, Yahuan, Bao, Lihong, Wang, Rongming, Zhang, Qing, and Zhang, Yanfeng

Subjects
SECOND harmonic generation, CHEMICAL vapor deposition, NONLINEAR optics, DATA warehousing, OPTICAL properties, VISUAL fields
Abstract

As an important member of the IVA–VIA group compounds, 2D SnSe2 has emerged as a perfect platform for developing diverse applications, especially in high‐performance optoelectronic devices and data storage, etc. However, the bottom‐up synthesis of large‐area uniform, atomically thin SnSe2 crystals with controlled thicknesses has not yet been realized. Herein, we report the large‐area uniform growth of monolayer (1L), bilayer (2L), and few‐layer (FL) 1T‐SnSe2 single‐crystal flakes on mica substrates via a facile chemical vapor deposition (CVD) route. The feeding amount of Sn precursor and flow rate of hydrogen carrier are found to be the key parameters for the thickness‐controlled growth of uniform SnSe2 flakes. More intriguingly, obvious second harmonic generation (SHG) is revealed in the retained inversion symmetry structure of 1T‐SnSe2, with its intensity showing linear dependence with the thickness from monolayer to multilayers. The new findings reported herein should pave the ways for the thickness‐tunable growth of atomically thin SnSe2 crystals, and their unique optical property explorations and applications in nonlinear optics. [ABSTRACT FROM AUTHOR]

Published
2022
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190. Single-mode lasing of CsPbBr3 perovskite NWs enabled by the Vernier effect

Author

Li, Fangtao, primary, Jiang, Mingming, additional, Cheng, Yang, additional, Zhang, Yufei, additional, Yang, Zheng, additional, Peng, Yiyao, additional, Ma, Wenda, additional, Chen, Qiushuo, additional, Wang, Chunfeng, additional, Liu, Kaihui, additional, Wang, Rongming, additional, Lu, Junfeng, additional, and Pan, Caofeng, additional

Published
2021
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