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20 results on '"Ye, Zeyu"'

1. Two-tone Doppler cooling of radial two-dimensional crystals in a radiofrequency ion trap

Author

Kato, Alexander, Goel, Apurva, Lee, Raymond, Ye, Zeyu, Karki, Samip, Liu, Jian Jun, Nomerotski, Andrei, and Blinov, Boris B.

Subjects
Physics - Atomic Physics
Abstract

We study the Doppler-cooling of radial two-dimensional (2D) Coulomb crystals of trapped barium ions in a radiofrequency trap. Ions in radial 2D crystals experience micromotion of an amplitude that increases linearly with the distance from the trap center, leading to a position-dependent frequency modulation of laser light in each ion's rest frame. We use two tones of Doppler-cooling laser light separated by approximately 100~MHz to efficiently cool distinct regions in the crystals with differing amplitudes of micromotion. This technique allows us to trap and cool more than 50 ions populating 4 shells in a radial two-dimensional crystal, where with a single tone of Doppler cooling light we are limited to 30 ions in 3 shells. We also individually characterize the micromotion of all ions within the crystals, and use this information to locate the center of the trap and to determine the Matthieu parameters $q_{x}$ and $q_{y}$., Comment: 7 Pages, 5 Figures

Published
2021
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2. New Features Extraction Method for Fault Diagnosis of Bearing Based on Legendre Multiwavelet Neural Network

Author

Luo, Chengyou, Zheng, Xiaoyang, Jia, Dongqing, Ye, Zeyu, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, S. Shmaliy, Yuriy, editor, and Nayyar, Anand, editor

Published
2023
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3. Intelligent Fault Diagnosis of Rotating Machinery Based on Improved RseNet and BiGRU

Author

Ye, Zeyu, Zheng, Xiaoyang, Luo, Chengyou, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, S. Shmaliy, Yuriy, editor, and Nayyar, Anand, editor

Published
2023
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5. A revisit to the curve shortening flow.

Author

Li, Yarui, Wang, Xiaoliu, Ye, Zeyu, and Zhang, Xingkai

Subjects
CURVATURE, CURVES
Abstract

In this paper, we give an alternative proof for the longtime behavior of classical curve shortening flow by using support function to estimate the curvature of evolving curves after an area-preserving rescaling, and then showing the convergence of the rescaled curvature via analyzing the structure of its $ \omega $-limit set. [ABSTRACT FROM AUTHOR]

Published
2024
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20. Palladium complex embedded crosslinked polystyrene nanofibers as a green and efficient heterogeneous catalyst for coupling reactions.

Author

Zhang, Benben, Ye, Zeyu, Qin, Min, Wang, Qingqing, Du, Yijun, Qi, Chenze, and Shao, Linjun

Subjects
PALLADIUM catalysts, PALLADIUM, SUZUKI reaction, HECK reaction, CATALYTIC activity, POLYSTYRENE, HETEROGENEOUS catalysts
Abstract

A simple and green chemical modification coupled with electrospinning technique has been developed to incorporate tetrakis(triphenylphosphine)palladium [Pd(PPh3)4] inside crosslinked polystyrene nanofibers (Pd@CPS) as an efficient and stable heterogeneous palladium catalyst. The catalytic activities and recyclabilities of the prepared Pd@CPS catalyst have been evaluated by using Suzuki and Heck reactions of various aromatic halides separately with phenylboronic acid and alkenes. The Pd@CPS exhibited high‐catalytic activities for the Suzuki and Heck reactions of aromatic iodides to afford the products in excellent yields (coupling yields >88%). The catalytic activities and the nanofiber structure remained essentially unchanged even after recycling for five times. The high activities and stabilities of the prepared Pd@CPS catalyst can be attributed to the ultrafine fiber and embedment of palladium active species inside the nanofibers. [ABSTRACT FROM AUTHOR]

Published
2021
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