Yuchen Zhang

Jan 15, 2025 | opg.optica.org | Yuchen Zhang |Xiaoyuan Zhang |Yangbo Bai |Jie Liu

All-optical modulators based on two-dimensional (2D) materials hold promising application as key components in the fields of all-optical signal processing and fiber optic communications. In this study, we present an all-optical modulator based on ${{\rm PtSe}_2}$ nanosheets integrated with micro-nano fibers (${{\rm PtSe}_2} {\text-} {\rm MF}$) with low power and high stability.

Jan 14, 2025 | arxiv.org | Jiawei Wang |Yuchen Zhang |Yuan Lin |Haomiao Sun

Dec 29, 2024 | mdpi.com | Yuchen Zhang

4. Empirical Results 4.1. Summary StatisticsTable 2 reports the results of descriptive statistics and univariate tests. The mean values of leverage manipulation variables are 0.1171 and 0.1191, respectively, indicating that the nominal leverage ratio is about 11 percentage points lower than the real leverage ratio due to the leverage manipulation behavior of the firm during the sample period.

Dec 3, 2024 | mdpi.com | Feng Guo |Aiyan Xu |Yuchen Zhang |Xuancen Li

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Nov 28, 2024 | mdpi.com | Xuanqi Liu |Yufeng Lai |Yuchen Zhang |Muyi Pan

1. IntroductionFlame colour, as one of the most fundamental characteristics of a flame, has been studied for centuries. Among several kinds of combustible gaseous fuels, hydrogen has been of great research interest due to its unique advantages, such as being renewable and non-toxic. Although the hydrogen flame colour was first described as “faint reddish-brown” by W. F.