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763 results on '"Liu, Xianghua"'

31. Broadband color routing with a single element nanoantenna for communication bands.

Author

Liu, Xianghua, Li, Ang, Liu, Chenyang, Zhao, Nengyang, Peng, Jiahao, Gan, Fengyuan, Lei, Xinrui, Wang, Ruxue, and Wu, Aimin

Subjects
OPTICAL switching, IMAGE sensors, SPECTRAL imaging, SPECTROMETRY, COLOR
Abstract

Spectral routing techniques have attracted plenty of research attention for the past decades, as they enable light manipulation in both the frequency domain and the spatial domain, which is crucial for applications in on-chip spectroscopy, optical switching, and modern communications. Here, we demonstrate an ultra-compact asymmetric nanoplasmonic router for communication bands that routes O and C bands to opposite positions. The nanorouter consists of two uneven grooves that create bidirectional scattered optical fields, utilizing the interference between different optical modes inside the grooves. A broadband spectrum exceeding 100 nm and a maximum extinction ratio of 31 dB are achieved, providing new opportunities for nanophotonic color routing solutions and extensions to other areas such as imaging sensors and spectral measurements. [ABSTRACT FROM AUTHOR]

Published
2024
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44. Analysis of the Asymmetrical Rolling of Ultra-Thin Strips Considering Elastic Deformation of the Strips.

Author

Zhao, Qilin, Hu, Xianlei, and Liu, Xianghua

Subjects
COLD rolling, MATERIAL plasticity, ELASTIC deformation, ROLLING friction
Abstract

In normal cold rolling, the elastic deformation of the strip is typically ignored because of the dominant plastic deformation. However, this neglect may introduce additional errors when the strip is very thin. The aim of this study is to investigate the characteristics of the deformation region and thickness reduction in the asymmetrical rolling of ultra-thin strips. Mathematical models were developed based on the slab method, with consideration of the elastic deformation of the strips, and employed in the simulation calculation. The percentage of the three zones and the thickness reduction were analyzed using the simulation results. An increase in the speed ratio results in an increase in the reduction ratio, which is influenced by parameters, such as front tension, back tension, friction coefficient, and entry thickness. The elastic deformation of the strip reduces the tension and the roll pressure and causes the reduction ratio to decrease. The findings and conclusions of this study may be helpful to the mill operating in the asymmetrical rolling process of ultra-thin strips. [ABSTRACT FROM AUTHOR]

Published
2024
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