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Optimizing the chemical vapor deposition process of 4H–SiC epitaxial layer growth with machine-learning-assisted multiphysics simulations

Tang, Zhuorui (author), Zhao, Shibo (author), Li, Jian (author), Zuo, Yuanhui (author), Tian, Jing (author), Tang, Hongyu (author), Fan, J. (author), Zhang, Kouchi (author)

This work addresses a novel technique for selecting the best process parameters for the 4H–SiC epitaxial layer in a horizontal hot-wall chemical vapor reactor using a transient multi-physical (thermal-fluid-chemical) simulation model and combined with a machine-learning model. An experiment was performed to validate the feasibility of the...

journal article 2024

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An operational simulation framework for modelling the multi-interaction of two-wheelers on mixed-traffic road segments

Ni, Ying (author), Li, Y. (author), Yuan, Y. (author), Sun, Jian (author)

In recent years, the interest in riding in cities using the two-wheeler (e.g., bicycles, electric bicycles, electric mopeds, etc.) increases. Mixed-traffic road segments are one of the most common traffic scenes where the mixed two-wheeler flows exist. Because the movements are often not restricted by lanes, the two-wheeler uses lateral road...

journal article 2023

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The Effect of Ambient Ageing on the Corrosion Protective Properties of a Lithium-Based Conversion Layer

Li, Z. (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Visser, Peter (author), Soleimani, M. (author), Mol, J.M.C. (author)

The influence of ageing under ambient conditions on the corrosion protective behaviour of a lithium-based conversion layer on AA2024-T3 is studied in this work. Conversion layers aged at ambient conditions for relatively short times (0 h and 4 h), show an initial high degree of corrosion inhibition but a much lower protectiveness after the...

journal article 2023

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Enhancing thermal degradation stability of BaSi₂O₂N₂:Eu²⁺ for white light-emitting diodes by ultra-thin Al₂O₃ layer via atomic layer deposition

Zhao, Y. (author), Wang, Xiao (author), Li, Quan an (author), Zhang, Xinyu (author), Li, Ye (author), Xie, Rong Jun (author), van Ommen, J.R. (author), Hintzen, H.T.J.M. (author)

The cyan-emitting BaSi₂O₂N₂:Eu²⁺ phosphor is a promising narrow-band and high-efficiency luminescent material used in wide-color-gamut white light-emitting diodes (wLEDs). However, its serious degradation under thermal attacks hinders its practical applications and needs to be improved. Herein, we...

journal article 2023

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Local scanning electrochemical microscopy analysis of a lithium-based conversion layer on AA2024-T3 at progressive stages of formation

Li, Z. (author), Li, G. (author), Visser, Peter (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Mol, J.M.C. (author)

Scanning electrochemical microscopy (SECM) is employed to characterize the evolution of local electrochemical surface activity during lithium-based conversion layer formation on legacy aerospace aluminium alloy AA2024-T3. Initially, three types of studied intermetallic particles - S-, θ- and constituent phases - act as active cathodic areas....

journal article 2023

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Effects of microporous layer on electrolyte flooding in gas diffusion electrodes and selectivity of CO₂ electrolysis to CO

Wu, Yuming (author), Garg, Sahil (author), Li, Mengran (author), Idros, Mohamed Nazmi (author), Li, Zhiheng (author), Lin, Rijia (author), Chen, Jian (author), Wang, Guoxiong (author), Rufford, Thomas E. (author)

Understanding the relationship between gas diffusion electrode (GDE) structures and the performance of electrochemical CO₂ reduction reaction (CO₂RR) is crucial to developing industrial-scale technologies to convert CO₂ to valuable products. We studied how the microporous layer (MPL) on GDE's coated with...

journal article 2022

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2D Dion–Jacobson CsPbI₃ with Enhanced Interlayer Coupling for Stable and Efficient Photovoltaics

Lei, Yutian (author), Peng, Guoqiang (author), Wang, H. (author), Wang, Gang (author), Yang, Siwei (author), Wang, Qian (author), Li, Zhen Hua (author), Jin, Zhiwen (author)

Inorganic 2D layered CsPbI₃ is awaiting to overcome the phase instability of traditional 3D components. However, the most reported Ruddlesden–Popper (RP) phase 2D CsPbI₃ leads to larger interlayer distance and weaker interlayer coupling since the existence of the van der Waals gap, which deteriorates the performance of...

journal article 2022

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Evaluation of the formation and protectiveness of a lithium-based conversion layer using electrochemical noise

Li, Z. (author), Homborg, A.M. (author), Gonzalez Garcia, Y. (author), Kosari, A. (author), Visser, Peter (author), Mol, J.M.C. (author)

The formation process of a lithium-based conversion layer on AA2024-T3 and its corrosion protective behavior are studied using electrochemical noise (EN). Wavelet transform, as well as noise resistance analysis, have been employed to interpret the EN data. The EN data confirmed five different stages during the conversion layer growth,...

journal article 2022

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Scale-dependent inclination angle of turbulent structures in stratified atmospheric surface layers

Li, Xuebo (author), Hutchins, Nicholas (author), Zheng, Xiaojing (author), Marusic, Ivan (author), Baars, W.J. (author)

A large-scale spanwise and wall-normal array of sonic anemometers in the atmospheric surface layer is used to acquire all three components of instantaneous fluctuating velocity as well as temperature in a range of stability conditions. These data permit investigation of the three-dimensional statistical structure of turbulence structures....

journal article 2022

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Nanostructuring Pt-Pd Bimetallic Electrocatalysts for CO₂ Reduction Using Atmospheric Pressure Atomic Layer Deposition

Li, M. (author), Fu, S. (author), Saedy, S. (author), Rajendrakumar, Aparna (author), Tichelaar, F.D. (author), Kortlever, R. (author), van Ommen, J.R. (author)

Preparing supported nanoparticles with a well-defined structure, uniform particle size, and composition using conventional catalyst synthesis methods, such as impregnation, precipitation, and deposition-precipitation is challenging. Furthermore, these liquid phase methods require significant solvent consumption, which has sustainable issues...

journal article 2022

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Development of an Integrated Analytical Model to Predict the Wet Collapse Pressure of Flexible Risers

Li, X. (author)

A flexible riser is a multi-layered pipe device which enables deep-water production by connecting seabed facilities to floating vessels. To withstand huge hydro-static pressure, it is required to have strong collapse capacities. At present, the collapse capacity of a flexible riser is designed based on a "wet collapse'' concept, in which the...

doctoral thesis 2021

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Formamidinium-Based Dion-Jacobson Layered Hybrid Perovskites: Structural Complexity and Optoelectronic Properties

Gelvez Rueda, M.C. (author), Ahlawat, Paramvir (author), Merten, Lena (author), Jahanbakhshi, Farzaneh (author), Mladenović, Marko (author), Hinderhofer, Alexander (author), Dar, M. Ibrahim (author), Li, Yang (author), Grozema, F.C. (author)

Layered hybrid perovskites have emerged as a promising alternative to stabilizing hybrid organic–inorganic perovskite materials, which are predominantly based on Ruddlesden-Popper structures. Formamidinium (FA)-based Dion-Jacobson perovskite analogs are developed that feature bifunctional organic spacers separating the hybrid perovskite slabs...

journal article 2020

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Revealing the Impact of Space-Charge Layers on the Li-Ion Transport in All-Solid-State Batteries

Cheng, Zhu (author), Liu, M. (author), Ganapathy, S. (author), Li, Z. (author), Zhang, Xiaoyu (author), He, Ping (author), Zhou, Haoshen (author), Wagemaker, M. (author), Li, Chau (author)

The influence of space-charge layers on the ionic charge transport over cathode-solid electrolyte interfaces in all-solid-state batteries remains unclear because of the difficulty to unravel it from other contributions to the ion transport over the interfaces. Here, we reveal the effect of the space-charge layers by systematically tuning the...

journal article 2020

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Uptake of heavy metal ions in layered double hydroxides and applications in cementitious materials: Experimental evidence and first-principle study

Li, Bo (author), Zhang, Shizhe (author), Li, Qiu (author), Li, Neng (author), Yuan, Bo (author), Chen, Wei (author), Brouwers, H.J.H. (author), Yu, Qingliang (author)

The uptake mechanism of heavy metal ions in layered double hydroxides (LDHs) is investigated in this paper via solid-solution exchange experiments and first principle study. The uptake capacities of C-LDHs for heavy metal ions from solutions are experimentally investigated and the structures of LDHs doped with various heavy metal ions are...

journal article 2019

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A spring-supported arch model for predicting the hydrostatic collapse strength of flexible risers with layer gap

Li, X. (author), Jiang, X. (author), Hopman, J.J. (author)

conference paper 2018

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Joint estimation of vertical total electron content (VTEC) and satellite differential code biases (SDCBs) using low-cost receivers

Zhang, Baocheng (author), Teunissen, P.J.G. (author), Yuan, Yunbin (author), Zhang, Hongxing (author), Li, Min (author)

Vertical total electron content (VTEC) parameters estimated using global navigation satellite system (GNSS) data are of great interest for ionosphere sensing. Satellite differential code biases (SDCBs) account for one source of error which, if left uncorrected, can deteriorate performance of positioning, timing and other applications. The...

journal article 2018

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A strain energy-based equivalent layer method for the prediction of critical collapse pressure of flexible risers

Li, X. (author), Jiang, X. (author), Hopman, J.J. (author)

Flexible risers are being required to be installed in a water depth of over 3000 m for fewer remaining easy-to-access oil fields nowadays. Their innermost carcass layers are designed for external pressure resistance since the hydrostatic pressure at such a water depth may cause the collapse failure of flexible risers. Determining a critical...

journal article 2018

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A layers-overlapping strategy for robotic wire and arc additive manufacturing of multi-layer multi-bead components with homogeneous layers

Li, Y. (author), Han, Qinglin (author), Zhang, Guangjun (author), Horvath, I. (author)

Robotic wire and arc additive manufacturing (WAAM) systems are required to provide predictable and efficient operations to fabricate solid metallic parts with high morphological fidelity and geometric accuracy. Since the metallic parts are fabricated based on a layer-by-layer principle, the interactions between the neighboring beads and...

journal article 2018

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Epidemic mitigation via awareness propagation in communication networks: The role of time scales

Wang, H. (author), Chen, Chuyi (author), Qu, B. (author), Li, Daqing (author)

The participation of individuals in multi-layer networks allows for feedback between network layers, opening new possibilities to mitigate epidemic spreading. For instance, the spread of a biological disease such as Ebola in a physical contact network may trigger the propagation of the information related to this disease in a communication...

journal article 2017

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Laboratory simulation of martensite formation of white etching layer in rail steel

Wu, J. (author), Petrov, R.H. (author), Naeimi, M. (author), Li, Z. (author), Dollevoet, R.P.B.J. (author), Sietsma, J. (author)

White etching layer (WEL) is a frequently observed microstructural phenomenon in rail surface, formed during dynamic wheel/rail contact. It is considered as one of the main initiators for rolling contact fatigue cracks. There are several hypotheses for the formation mechanism of WEL. However, due to the complicated wheel/rail contact...

journal article 2016