A
Alfonso A. Castrejón-Pita
Researcher at University of Oxford
Publications - 85
Citations - 1647
Alfonso A. Castrejón-Pita is an academic researcher from University of Oxford. The author has contributed to research in topics: Breakup & Particle image velocimetry. The author has an hindex of 20, co-authored 74 publications receiving 1204 citations. Previous affiliations of Alfonso A. Castrejón-Pita include National Autonomous University of Mexico & University of Cambridge.
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Journal ArticleDOI
Plethora of transitions during breakup of liquid filaments
Jose Rafael Castrejon-Pita,Alfonso A. Castrejón-Pita,Sumeet Thete,Krishnaraj Sambath,Ian M. Hutchings,John Hinch,John R. Lister,Osman A. Basaran +7 more
TL;DR: It is demonstrated that a thinning filament unexpectedly passes through a number of intermediate transient regimes, thereby delaying onset of the inertial–viscous regime and raising the question as to whether similar dynamical transitions arise in other free-surface flows such as coalescence that also exhibit singularities.
Journal ArticleDOI
Breakup of Liquid Filaments
TL;DR: Experimental evidence is provided for the conditions under which a liquid filament will break up into drops, in terms of a wide range of two dimensionless quantities: the aspect ratio of the filament and the Ohnesorge number.
Journal ArticleDOI
It's Harder to Splash on Soft Solids
Christopher J. Howland,Arnaud Antkowiak,Arnaud Antkowiak,J. Rafael Castrejón-Pita,Sam Howison,James M. Oliver,Robert W. Style,Robert W. Style,Alfonso A. Castrejón-Pita +8 more
TL;DR: It is found that solids with Young's moduli ≲100 kPa reduce splashing, in agreement with simple scaling arguments, and materials like soft gels and elastomers can be used as simple coatings for effective splash prevention.
Journal ArticleDOI
Hydrodynamically Guided Hierarchical Self-Assembly of Peptide-Protein Bioinks
Clara L. Hedegaard,Estelle Collin,Carlos Redondo-Gómez,Luong T. H. Nguyen,Kee Woei Ng,Alfonso A. Castrejón-Pita,J. Rafael Castrejón-Pita,Alvaro Mata +7 more
TL;DR: The study introduces a novel biofabrication platform capable of encapsulating and spatially distributing multiple cell types within tuneable pericellular environments and demonstrates the potential of the approach to generate complex bioactive scaffolds for applications such as tissue engineering, in vitro models, and drug screening.
Journal ArticleDOI
Mixing and internal dynamics of droplets impacting and coalescing on a solid surface
Jose Rafael Castrejon-Pita,Krzysztof Kubiak,Alfonso A. Castrejón-Pita,Mark C. T. Wilson,Ian M. Hutchings +4 more
TL;DR: The results show that no detectable mixing occurs during impact and coalescence of similar-sized droplets, but when the sessile droplet is sufficiently larger than the impacting droplet vortex ring generation can be observed, it is shown how a gradient of wettability on the substrate can potentially enhance mixing.