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Accuracy of Numerical Morphological Models based on Simplified Hydrodynamics

Barneveld, H.J. (author), Mosselman, E. (author), Chavarrías, V. (author), Hoitink, A.J.F. (author)

Sustainable river management often requires long-term morphological simulations. As the future is unknown, uncertainty needs to be accounted for, which may require probabilistic simulations covering a large parameter domain. Even for one-dimensional models, simulation times can be long. One of the acceleration strategies is simplification of...

abstract 2024

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Introducing a force-matched united atom force field to explore larger spatiotemporal domains in molecular dynamics simulations of bitumen

Assaf Martinez-Streignard, E.I. (author), Liu, X. (author), Lin, P. (author), Erkens, S. (author)

This paper presents a United Atom (UA) force field for simulating hydrocarbon molecules in bituminous materials, integrating explicit hydrogens into beads with their parent atom. This method simplifies all-atom molecular models, significantly accelerating Molecular Dynamics (MD) simulations of bitumen by 10 to 100 times. Key advantages...

journal article 2024

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Studying the impact of phase behavior in the morphology of molecular dynamics models of bitumen

Assaf Martinez-Streignard, E.I. (author), Liu, X. (author), Lin, P. (author), Erkens, S. (author), Nahar, Sayeda (author), Mensink, Liz I.S. (author)

Conventional Molecular Dynamics (MD) models of bitumen are built by homogeneously mixing molecules in a volume without considering that the molecules in bitumen are known to exhibit phase behavior and form distinctive molecular arrangements. These are known to have a significant impact in the behavior of bitumen, and considering their...

journal article 2023

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Influence of Glycyl-L-Glutamic Acid Dipeptide on Calcium Pyrophosphate Dihydrate Crystallization

Polat, S. (author), An, Q. (author), Eral, H.B. (author)

The increasing prevalence of calcium pyrophosphate dihydrate (CPPD) deposition disease, a form of arthritis with high inflammatory potential, has triggered considerable interest in the search for additives to prevent CPPD crystal formation, particularly in the field of biomineralization. In this context, CPPD crystallization in aqueous...

journal article 2023

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Regeneration mechanisms of aged SBS modified asphalt from RAP materials: Molecule structure, morphology, phase transition, and interface adhesion characteristics

Dong, Fuqiang (author), Wang, Jincheng (author), Yu, Xin (author), Jiang, Mengmeng (author), Guo, Yongjia (author), Wang, Shiyu (author), Zu, Yuanzhe (author), Ren, S. (author)

In this study, the environmentally friendly rejuvenators with waste thermal conductive oil, polymer, and the interfacial reinforcing agent were prepared. And the influence of the different rejuvenators on the rejuvenation mechanisms of aged SBS modified asphalt was characterized by different scales including the molecule structure, morphology...

journal article 2023

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Robust Jumping with an Articulated Soft Quadruped via Trajectory Optimization and Iterative Learning

Ding, J. (author), Sels, Mees A.van Loben (author), Angelini, Franco (author), Kober, J. (author), Della Santina, C. (author)

Quadrupeds deployed in real-world scenarios need to be robust to unmodelled dynamic effects. In this work, we aim to increase the robustness of quadrupedal periodic forward jumping (i.e., pronking) by unifying cutting-edge model-based trajectory optimization and iterative learning control. Using a reduced-order soft anchor model, the...

journal article 2023

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The Development and Stability of Palladium-based Thin Films for Hydrogen-related Energy Applications

Verma, N. (author)

Hydrogen has been contemplated as a desirable energy source of the future with enormous possibilities to create a carbon-neutral society. Since palladium (Pd) readily absorbs hydrogen even at low pressure and room temperature, Pd and its alloys are suitable for hydrogen production, purification, storage, gas sensors, and fuel cell catalyst....

doctoral thesis 2022

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Controlling Maneuverability of a Bio-Inspired Swimming Robot Through Morphological Transformation: Morphology Driven Control of a Swimming Robot

Junge, Kai (author), Obayashi, Nana (author), Stella, F. (author), Della Santina, C. (author), Hughes, Josie (author)

Biology provides many examples of how body adaption can be used to achieve a change in functionality. The feather star, an underwater crinoid that uses feather arms to locomote and feed, is one such system; it releases its arms to distract prey and vary its maneuverability to help escape predators. Using this crinoid as inspiration, we develop a...

journal article 2022

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Adhesion properties of tartaric sulfuric acid anodic films assessed by a fast and quantitative peel tape adhesion test

Paz Martinez-Viademonte, Mariana (author), Abrahami, S.T. (author), Hack, Theodor (author), Burchardt, Malte (author), Terryn, H.A. (author)

The adhesion capabilities of sulfuric acid and tartaric-sulfuric-acid anodic oxide films on cladded AA2024-T3 aluminium substrates have been investigated in a quantitative manner. A relatively simple, versatile and industrially applicable test methodology based on DIN EN ISO 29862 has been used. In addition, the effect of anodising process...

journal article 2022

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Dislocations, texture and stress development in hydrogen-cycled Pd thin films: An in-situ X-ray diffraction study

Verma, N. (author), Delhez, R. (author), van der Pers, N.M. (author), Hendrikx, R.W.A. (author), Huizenga, R.M. (author), Bottger, A.J. (author)

For Pd thin films, microstructural changes involved during hydrogen cycling provide the information needed to predict and optimize the film's mechanical strength. In this paper, a systematic study of the morphology, microstructure, texture, and stress has been performed on Pd thin films during hydrogen loading and deloading cycles at room...

journal article 2022

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Experimental and density functional theory studies of laminar double-oxidized graphene oxide nanofiltration membranes

Valizadeh, Solmaz (author), Naji, Leila (author), Karimi, Mohammad (author), Sarabadani Tafreshi, Saeedeh (author), Heijman, Sebastiaan (author), de Leeuw, Nora H. (author)

The type and loading level of oxygen-containing functional groups on graphene oxide (GO) nanosheets significantly affect the size and alignment of nanochannels formed between the GO nanosheets and the separation performance of laminar GO membranes. Here, we demonstrate how double-oxidation of GO leads to the higher surface charge of GO...

journal article 2022

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Production of Open-Cell Foam Using Additive Manufacturing Method and Porous Morphology Effects

Mustapha, K. A. (author), Shikh Anuar, F. (author), Mohd Sa’at, F. A.Z. (author), Zini, N. H.M. (author), Mat Tokit, E. (author), Satishwara Rao, N. (author), Hooman, K. (author), Abdi, Iman Ashtiani (author)

In this study, 3D printed open-cell foam were produced and reconstructed from open-cell metal foam structure using a tomography scanning method and two different additive manufacturing technologies. The materials used in the 3D printing were nylon powder and plastic acid. The porous morphology and surface finish of the 3D printed foams were...

conference paper 2022

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Anthropogenic effects on the hydro-morphological development of turbid estuaries

Zhu, C. (author)

Estuarine sediment dynamics involves estuarine hydrodynamics, sediment transport, and morphology, and strongly influence ecosystem dynamics and sustainability. In the current geological epoch, referred to as the Anthropocene, human activities are exerting increasing impacts on the environment on all scales, changing hydrodynamics, sediment...

doctoral thesis 2021

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Morphometric and Mechanical Analyses of Calcifications and Fibrous Plaque Tissue in Carotid Arteries for Plaque Rupture Risk Assessment

Gijsen, F.J.H. (author), Vis, Bas (author), Barrett, Hilary E. (author), Zadpoor, A.A. (author), Verhagen, Hence J. (author), Bos, Daniel (author), van der Steen, A.F.W. (author), Akyildiz, A.C. (author)

Objective: Atherosclerotic plaque rupture in carotid arteries is a major source of cerebrovascular events. Calcifications are highly prevalent in carotid plaques, but their role in plaque rupture remains poorly understood. This work studied the morphometric features of calcifications in carotid plaques and their effect on the stress...

journal article 2021

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Long-term bed level change in the Dutch Rhine branches and its impacts to water availability

Sloff, C.J. (author), van Walsem, Thomas (author)

abstract 2021

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Design and characterization of 2D MXene-based electrode with high-rate capability

Wang, Xuehang (author), Bannenberg, L.J. (author)

MXenes, two-dimensional transition metal carbides and nitrides, are promising materials for electrochemical energy storage application due to their redox-active surface and flexible interlayer space. Among all reported MXene-based electrodes, some have shown significantly better high-rate energy storage capabilities. Hence, it is crucial to...

review 2021

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Changjiang Delta in the Anthropocene: Multi-scale hydro-morphodynamics and management challenges

Guo, Leicheng (author), Zhu, C. (author), Xie, Weiming (author), Xu, Fan (author), Wu, Hui (author), Wan, Yuanyang (author), Wang, Zhanghua (author), Zhang, Weiguo (author), Shen, Jian (author), Wang, Zhengbing (author), He, Qing (author)

The Changjiang Delta (CD) is one of well-studied large deltas of critical socio-economical and ecological importance regionally and global representativeness. Cumulated field data and numerical modeling has facilitated scientific understanding of its hydro-morphodynamics at multiple spatial and time scales, but the changing boundary forcing...

review 2021

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Elucidating the role of hyaluronic acid in the structure and morphology of calcium oxalate crystals

Polat, S. (author), Eral, H.B. (author)

Recent surge in reports describing new additives that inhibiting the growth and nucleation of calcium oxalate (CaOx), the most common component of renal calculi or kidney stones, have rekindled interest in CaOx crystallization. In this in vitro study, the effect of hyaluronic acid (HA), a protein commonly found in urine, on the morphology and...

journal article 2021

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Effect of different aqueous solutions on physicochemical properties of asphalt binder

Zou, Yingxue (author), Amirkhanian, Serji (author), Xu, S. (author), Li, Yuanyuan (author), Wang, Yafei (author), Zhang, Jianwei (author)

Aqueous solution is one of the main factors of asphalt pavement disease. However, the physicochemical changes of asphalt are ambiguous during immersion in different aqueous solutions. This study evaluated the physicochemical properties of asphalt under the action of different aqueous solutions to further understand the mechanism of moisture...

journal article 2021

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Analysis of SN-BI solders: X-ray micro computed tomography imaging and microstructure characterization in relation to properties and liquid phase healing potential

Siroky, Georg (author), Kraker, Elke (author), Rosc, Jördis (author), Kieslinger, Dietmar (author), Brunner, Roland (author), van der Zwaag, S. (author), Kozeschnik, Ernst (author), Ecker, Werner (author)

This work provides an analysis of X-ray micro computed tomography data of Sn-xBi solders with x = 20, 30, 35, 47, 58 wt.% Bi. The eutectic thickness, fraction of eutectic and primary phase are analyzed. Furthermore, the 3D data is evaluated by means of morphology parameters, such as, shape complexity, flatness, elongation and mean intercept...

journal article 2021