Yingchun Wu

Programmable and scalable on-chip WDM processing platform enabled by cascaded FSR-free resonators

Boshu Sun, Haojie Zhu, Ying Sun, Kunhao Lei et autres

Wavelength-division multiplexing (WDM) is pivotal for expanding the capacity and functionality of photonic systems, from communications to computing. However, on-chip implementation for broadband operation is fundamentally limited by the narrow free spectral range (FSR) and inefficient drop transmission of conventional optical microcavities. …

Geometrical-optics resonator photonics

Chunlei Sun, Kangjian Bao, Boshu Sun, Bo Tang et autres

Conventional waveguide optical resonators face inherent limitations of low damage thresholds, limited coupling tunability, and stochastic resonance. To overcome these, we introduce a geometrical-optics resonator (GOR) framework, emulating free-space reflection and thin-film coupling on-chip. Using ultra-wide waveguides with total internal reflection (TIR) …

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Factors associated with pain catastrophizing in patients with knee osteoarthritis: a cross-sectional study

Lian Qiu, Yulu Yan, Guorui Li, Lin Cui et autres

Objective To understand the current status and associated factors of pain catastrophizing in patients with knee osteoarthritis. Method Using the method of convenient sampling, 341 patients with knee osteoarthritis were recruited from 4 tertiary hospitals in Sichuan Province. From August 2023 to …

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Uniform asymptotic theory of the secondary rainbow: Regularization of polarization-dependent caustics

Anonymous, Yingchun Wu, Xuecheng Wu

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Influencing factors of functional exercise adherence in stroke survivors: a cross-sectional study based on structural equation modeling

Xinyu Wang, Juan Chen, Yingchun Wu, Lian Qiu et autres

Post-stroke rehabilitation exercise plays an important role in functional recovery and secondary prevention. Nevertheless, exercise adherence commonly declines between 6 and 22 weeks after stroke. Guided by the Capability-Opportunity-Motivation-Behavior model, this study assessed exercise adherence among stroke survivors, examined potential pathways of …

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Trajectory-resolved ignition behavior of aluminum aggregates in NEPE propellant at elevated pressure via 50 kHz shadowgraphy and microscopy

Zhenghui Yang, Wenjian Cai, Yun Zhao, Ang Gao et autres

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Back‐End‐Of‐Line Integrated Non‐Volatile Reconfigurable Devices for Programmable Photonic Integrated Circuits

Kai J. Xu, Maoliang Wei, Yiting Yun, Yingchun Wu et autres

ABSTRACT Chalcogenide phase change materials (PCMs) integrated photonics is characterized by zero static power consumption and compact footprint, offering a breakthrough tuning method for large‐scale programmable photonic integrated circuits (PICs). To facilitate the development of large‐scale PCMs‐based PICs, the performance requirements of …

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Cloud spatial evolution characteristics under some supercooled large drop conditions in a large-scale icing wind tunnel: Effects of the gravity and airflow contraction on cloud size, cloud uniformity, and particle morphology

Xiangdong Guo, Qing Guo, Rong Zhao, Yingchun Wu et autres

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Carotid atherosclerotic plaque vulnerability assessment from angiography-derived radial wall strain validated by MRI

Yingchun Wu, Lijun Fu, Wen Liu, Rihan Wu et autres

This study evaluates plaque stability in atherosclerotic carotid plaques, which are key stroke contributors, by using radial wall strain (RWS) from digital subtraction angiography (DSA). It explores the Link between RWS, symptomatic stenosis, and endovascular treatment outcomes. In a single-center prospective study, …

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Metal droplet size and 3D trajectory in accident nuclear fuel combustion via 80 kHz off-axis holography: using Ce as surrogate

Yu Wang, Yang Zhang, Zhenghui Yang, Bingning Jin et autres

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Coverable Self‐Cleaning Glass via Abnormal Transport and Jump of Charged Particles

Meng Yang, Conglin Li, Wei Tang, Wenchao Gao et autres

Abstract Surface particle pollution is present everywhere, from windows in daily life to transparent curtain walls in tall buildings and photovoltaic panels in deserts. Cleaning these particles takes a lot of labor and costs, highlighting a method for dealing with surface particle …

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Compact dual-wavelength common-path digital holographic microscope for dynamic topography reconstruction

Yuxuan Zhao, Zhiming Lin, Zhiwen Deng, Yingchun Wu et autres

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