There are numerous filters to separate particles in liquid based on their size, which can be enough to isolate them; however, particle shape can be more important, as it distinguishes healthy red blood cells from those affected by sickle-cell disease or malaria. Shape can also be used to determine what stage a cell is in of the cell cycle, which would benefit researchers looking for dividing cells. Recent research by Dino Di Carlo of UCLA looks to separate particles of differing aspect ratios co........ Read more »
Masaeli, M., Sollier, E., Amini, H., Mao, W., Camacho, K., Doshi, N., Mitragotri, S., Alexeev, A., & Di Carlo, D. (2012) Continuous Inertial Focusing and Separation of Particles by Shape. Physical Review X, 2(3). DOI: 10.1103/PhysRevX.2.031017
Di Carlo, D., Irimia, D., Tompkins, R., & Toner, M. (2007) Continuous inertial focusing, ordering, and separation of particles in microchannels. Proceedings of the National Academy of Sciences, 104(48), 18892-18897. DOI: 10.1073/pnas.0704958104
Sugaya, S., Yamada, M., & Seki, M. (2011) Observation of nonspherical particle behaviors for continuous shape-based separation using hydrodynamic filtration. Biomicrofluidics, 5(2), 24103. DOI: 10.1063/1.3580757
This experiment in the fluid dynamics video demonstrated that a three-dimensional flame can be reconstructed by combining images from multiple cameras using synthetic aperture imaging.... Read more »
Preston Murray, Jonathon Pendlebury, Dale Tree, & Tadd Truscott. (2011) Flame Reconstruction Using Synthetic Aperture Imaging. arXiv. arXiv: 1110.3700v1
I explain an experiment in fluid dynamics, accompanied with a video... Read more »
Drelich J, & Chibowski E. (2010) Superhydrophilic and superwetting surfaces: definition and mechanisms of control. Langmuir : the ACS journal of surfaces and colloids, 26(24), 18621-3. PMID: 21090661
We don’t usually learn about the physics of squishy things. Physics textbooks are filled with solid objects such as incompressible blocks, inclined planes and inelastic strings. This is the rigid world that obeys Newton’s laws. Here, squishiness is an exception and drag is routinely ignored... Continue reading →... Read more »
Reynolds, O. (1883) An Experimental Investigation of the Circumstances Which Determine Whether the Motion of Water Shall Be Direct or Sinuous, and of the Law of Resistance in Parallel Channels. Proceedings of the Royal Society of London, 35(224-226), 84-99. DOI: 10.1098/rspl.1883.0018
A small aquatic plant has evolved one of the fastest and most sophisticated suction traps known... Read more »
By 2020 seventy percent of the heart patients of the World, a study suggests, would be in India. The cause seems genetic. The gene that codes the enzyme called PON1 is defective in Indians and predisposes them to heart ailments and diabetes. Coupled with degenerating lifestyle – eating habits – leads to such a dire [...]... Read more »
Kaoui, B., Biros, G., & Misbah, C. (2009) Why Do Red Blood Cells Have Asymmetric Shapes Even in a Symmetric Flow?. Physical Review Letters, 103(18). DOI: 10.1103/PhysRevLett.103.188101
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