Peiyu Ji

Kinetic mechanism of wave tunneling in one-dimensional plasma photonic crystals

Haiyun Tan, Mingjie Zhou, Tianyuan Huang, Peiyu Ji et autres

In one-dimensional plasma photonic crystals, sub-plasma-frequency wave propagation is traditionally attributed to macroscopic phenomena such as mode coupling or tunneling—descriptions that lack a rigorous kinetic foundation. Using first-principles particle-in-cell simulations, this study reveals that tunneling microscopically manifests as a V-shaped electron phase-space …

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Significance of the Boston Cognitive Assessment in patients with chronic post-stroke cognitive impairment

Xiao Wei Yin, Haiying Zhu, Peiyu Ji, B. Wu et autres

Background The Boston Cognitive Assessment (BoCA) is an online, self-administered, remote cognitive screening tool for the early detection and long-term monitoring of health changes in the brain of aging populations. This study aimed to evaluate the reliability and validity of the Mandarin …

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Enhanced photoelectrochemical performance of hierarchical Ag/TiO₂/VGs composite films synthesized by dual-plasma synthesis

Jiali Chen, Yanyan Wang, Tianyuan Huang, Peiyu Ji et autres

A ternary Ag/TiO₂/VGs composite film with a 3D conductive scaffold was successfully fabricated via a dual-plasma strategy combining helicon wave plasma CVD and RF magnetron sputtering. Vertically oriented graphene nanosheets (VGs) act as both high-surface-area conductive backbones and interfacial anchoring sites for …

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Noise reduction via dual-grid charge averaging

Haiyun Tan, Peiyu Ji, Liang Xu, Xuemei Wu

Abstract Numerical heating in particle-in-cell simulations arises primarily from statistical noise during the deposition process, which has long been a critical bottleneck limiting long-term simulation accuracy. This work proposes a dual-grid scheme that enhances sampling accuracy by leveraging complementary spatial information from …

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Plasma Controlled Growth Dynamics and Electrical Properties of Ag Nanofilms via RF Magnetron Sputtering

Jiali Chen, Yanyan Wang, Tianyuan Huang, Peiyu Ji et autres

Silver thin films are widely utilized in plasmonic, electronic, and catalytic devices due to their excellent conductivity, optical properties, and surface activity. However, the nanostructure and performance of Ag films are highly dependent on deposition parameters, particularly during radio-frequency magnetron sputtering (RF-MS). …

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Influence of VGs structure modulated by helicon wave plasma CVD on the photocatalytic performance of nanocomposite TiO₂/VGs

Peiyu Ji, Jiali Chen, Tianyuan Huang, Haiyun Tan et autres

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Effect of substrate type on structural and electrochemical performance of vertical graphene nanosheets deposited by HWP-CVD

Jiali Chen, Yanyan Wang, Peiyu Ji, Lanjian Zhuge et autres

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Preparation of carbon/nickel composites by magnetron sputtering and study on electromagnetic shielding effectiveness

Ye‐mei Zhang, Jingyi Fan, Peiyu Ji, Maoyang Li et autres

A pure nickel film and a carbon/nickel (C/Ni) composite film were produced using radio frequency magnetron sputtering. The structure of the films was regulated by adjusting the sputtering power and the time allocation of sputtering nickel and graphite targets. Furthermore, a scanning …

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A Novel Approach towards the Preparation of Silk-Fibroin-Modified Polyethylene Terephthalate with High Hydrophilicity and Stability

Jingyi Fan, Yiwen Zhang, Maoyang Li, Peiyu Ji et autres

Silk fibroin (SF) has been widely used in biomedical applications for the hydrophilicity modification of high molecular polymer materials. However, the challenge remains to immobilize SF with high structure stability and strong adhesion strength between SF and the substrate. Here, we propose …

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Explicit Particle Mover With Damping for Electrostatic Particle-In-Cell Simulations

Haiyun Tan, Tianyuan Huang, Peiyu Ji, Mingjie Zhou et autres

Short-wavelength numerical fluctuations limit the choice of space step in conventional explicit particle-in-cell (PIC) simulations, and it is meaningful to study explicit particle movers with damping of numerical noises. In this work, we propose a strategy to guide the construction of such …

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Effect of TiO2 nanoparticle load on photoelectric properties of TiO2/VGs heterojunction

Peiyu Ji, Jiali Chen, Haiyun Tan, Tianyuan Huang et autres

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Effects of power on ion behaviors in radio-frequency magnetron sputtering of indium tin oxide (ITO)

Maoyang Li, Chaochao Mo, Jiali Chen, Peiyu Ji et autres

Abstract This study delves into ion behavior at the substrate position within RF magnetron discharges utilizing an indium tin oxide (ITO) target. The positive ion energies exhibit an upward trajectory with increasing RF power, attributed to heightened plasma potential and initial emergent …

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