Searched for: subject%3A%22droplets%22
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Li, H. (author), Li, X. (author), Collado Lara, G. (author), Lattwein, K.R. (author), Mastik, Frits (author), Beurskens, Robert (author), van der Steen, A.F.W. (author), Verweij, M.A. (author), de Jong, N. (author), Kooiman, Klazina (author)
Ultrasound contrast-mediated medical imaging and therapy both rely on the dynamics of micron- and nanometer-sized ultrasound cavitation nuclei, such as phospholipid-coated microbubbles and phase-change droplets. Ultrasound cavitation nuclei respond non-linearly to ultrasound on a nanosecond time scale that necessitates the use of ultra-high...
journal article 2023
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O'Connell, Ken (author), Olaleye, Akeem K. (author), van den Akker, H.E.A. (author)
The development of a novel numerical model for droplet drying is the topic of this paper. The three main stages of droplet drying are distinguished, viz. unhindered evaporation of a ’wet’ particle (the droplet), restricted drying at a falling rate due to the formation of a crust around a wet core, and inert heating of the dry porous particle....
journal article 2023
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Husseini, Abbas Ali (author), Yazdani, Ali Mohammad (author), Ghadiri, Fatemeh (author), Sisman, A.S. (author)
We developed a microchip device using surface acoustic waves (SAW) and sharp-edge glass microparticles to rapidly lyse low-level cell samples. This microchip features a 13-finger pair interdigital transducer (IDT) with a 30-degree focused angle, creating high-intensity acoustic beams converging 6 mm away at a 16 MHz frequency. Cell lysis is...
journal article 2023
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Kurniawan, Tetuko (author), Sahebdivani, Mahsa (author), Zaremba, Damian (author), Blonski, Slawomir (author), Garstecki, Piotr (author), van Steijn, V. (author), Korczyk, Piotr M. (author)
Two decades of research on droplet formation in microchannels have led to the widely accepted view that droplets form through the squeezing mechanism when interfacial forces dominate over viscous forces. The initially surprising finding that the volume of the droplets is insensitive to the relative importance of these two forces is nowadays...
journal article 2023
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Horsthuis, Jan (author)
Capillary self-alignment shows the potential to keep small components aligned using soft liquid contact when disturbed by external forces. Whilst this concept has been promising, mostly static situations have been investigated, making it unclear how a receptor-droplet-chip (RDC) configuration behaves dynamically and where its stability limits...
master thesis 2022
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van Driel, Tim (author)
In this design study a new design is proposed for an in situ surface inspection tool that can rapidly detect micrometer sized water droplets on a silicon wafer. This surface inspection tool is part of a proposed redesign of the thermal conditioning stage of VDL-ETGs atmospheric wafer handler. A meticulous requirements study was performed, and...
master thesis 2022
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Danczul, Tobias (author), Hetebrij, Wouter (author), Khalighi, Faeze (author), Kogler, Lukas (author), Lahaye, D.J.P. (author), Luckins, Ellen (author), Munters, Wim (author), Neunteufel, Michael (author), Vuik, Cornelis (author)
conference paper 2022
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Liu, Y.L. (author), Ortiz, Marco A. (author), Zhang, D. (author), Bluyssen, P.M. (author)
The airborne transmission of SARS-CoV-2 in educational buildings has raised concerns during the current COVID-19 pandemic. In this study, a portable fog generator system was designed and assembled to visualise the airflow pattern of exhaled droplets in a classroom. The system consists of five components: medium, fog generator, buffer, pump, and...
conference paper 2022
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Ding, Er (author), Zhang, D. (author), Bluyssen, P.M. (author)
Airborne transmission of small respiratory droplets (i.e., aerosols) is one of the dominant transmission routes of pathogens of several contagious respiratory diseases, which mainly takes place between occupants when sharing indoor spaces. The important role of ventilation in airborne infection control has been extensively discussed in...
review 2022
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Antoniou, A (author), Dyer, K (author), Finnegan, William (author), Herring, Robbie (author), Holst, Bodil (author), Ilsted Bech, Jakob (author), Katsivalis, Ioannis (author), Kutlualp, Tazefidan (author), Teuwen, Julie J.E. (author)
In the immediate future, wind power will provide more electricity than any other technology based on renewable and low-emission energy sources. As a result, the size of offshore wind turbines has increased to harvest more wind energy in order to achieve the 2050 EU carbon neutral targets. The use of composites opens great prospects in the design...
conference paper 2022
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Farooq, U. (author), Teuwen, Julie J.E. (author), Dransfeld, C.A. (author)
Epoxies with high cross-linking densities are brittle and hence have a low fracture toughness. However, different methods are known to increase fracture toughness. Numerous approaches are known to incorporate a second phase into the epoxy matrix, such as rubber, inorganic nanoparticles or thermoplastics, referred to as bulk resin modification....
conference paper 2022
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Bhangale, J.A. (author), Alderliesten, R.C. (author), Benedictus, R. (author), Bersee, H.E.N. (author)
Prediction models for fatigue in engineering applications are developed within a fatigue analysis framework, deliberately selected in some cases, but mostly chosen without substantiation. The proposition of this paper is that selecting the most appropriate framework can only be done with the knowledge and a complete overview of existing...
conference paper 2022
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Zwicker, David (author), Laan, L. (author)
Phase separation has emerged as an essential concept for the spatial organization inside biological cells. However, despite the clear relevance to virtually all physiological functions, we understand surprisingly little about what phases form in a system of many interacting components, like in cells. Here we introduce a numerical method based...
journal article 2022
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Sewalt, E.J.G. (author), Kalkman, J. (author), van Ommen, J.R. (author), Meesters, G.M.H. (author), van Steijn, V. (author)
Properties of powders produced from drying solute-containing droplets arise from the dynamic redistribution of solute during drying. While insights on the dynamic redistribution are instrumental for the rational design of powders and for the optimized operation of equipment such as spray dryers, experimental techniques that allow measuring...
journal article 2022
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Jimenez, Jose L. (author), Marr, Linsey C. (author), Randall, Katherine (author), Ewing, Edward Thomas (author), Tufekci, Zeynep (author), Greenhalgh, Trish (author), Tellier, Raymond (author), Tang, Julian W. (author), Bluyssen, P.M. (author)
Abstract The question of whether SARS-CoV-2 is mainly transmitted by droplets or aerosols has been highly controversial. We sought to explain this controversy through a historical analysis of transmission research in other diseases. For most of human history, the dominant paradigm was that many diseases were carried by the air, often over long...
journal article 2022
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Van den Steen, N. (author), Gonzalez Garcia, Y. (author), Mol, J.M.C. (author), Terryn, H.A. (author), Van Ingelgem, Y. (author)
A new approach is proposed to numerically predict and study atmospheric corrosion for ranging droplet size distributions and the influence of the droplet geometry. The proposed methodology allows for a corrosion prediction based on observed droplet size distributions and droplet contact angles. A mechanistic finite element model, including...
journal article 2022
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Heymans, Sophie V. (author), Collado Lara, G. (author), Rovituso, M. (author), Vos, H.J. (author), D'hooge, Jan (author), de Jong, N. (author), Van Den Abeele, Koen (author)
Superheated nanodroplet (ND) vaporization by proton radiation was recently demonstrated, opening the door to ultrasound-based in vivo proton range verification. However, at body temperature and physiological pressures, perfluorobutane nanodroplets (PFB-NDs), which offer a good compromise between stability and radiation sensitivity, are not...
journal article 2022
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Liu, Marvin (author)
The airborne transmission of SARS-CoV-2 in educational buildings has raised concerns during the current COVID-19 pandemic. In this study, a portable fog generator system was designed and assembled to visualise the airflow pattern of exhaled droplets in a classroom. The system consists of five components: medium, fog generator, buffer, pump, and...
master thesis 2021
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Totlani, K. (author)
A crucial challenge during the initial stages of bioprocess development is that tools used to screen microorganisms and optimize cultivation conditions do not represent the environment imposed at industrial scale. Inside an industrial-scale bioreactor, microorganisms are often cultivated under fed-batch conditions, where nutrients are supplied...
doctoral thesis 2021
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Kumar, Sowmya (author)
The coalescence of two droplets suspended in a viscous fluid is the focus of this study. When two droplets that are suspended in a shearing flow come in contact with each other, it is currently uncertain if the contact would result in coalescence. To be able to make such predictions, it is necessary to study the effects of the system parameters,...
master thesis 2021
Searched for: subject%3A%22droplets%22
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