Moving fluid with bacterial carpets
NettetWe created active bacterial carpets that move fluids over an area of 3 cm 2 and a depth of ∼50 μm. The carpets were made by blotting PDMS-coated glass onto a petri plate of … NettetThe adherent bacteria on this “bacterial carpet” freely rotate their flagella, which move the fluid near them and act as microscopic propellers, with no need for an external …
Moving fluid with bacterial carpets
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Nettet15. mar. 2010 · Moving along. E. coli bacteria propel themselves by pushing fluid with a rear-mounted flagellum, but other microbes have front-mounted flagella that “pull” the fluid. Pushers and pullers have clear but opposite effects on the overall viscosity of the... Show more Blood is thicker than water, or so the old proverb goes. NettetThe surface performed active mixing equivalent to diffusion with a coefficient of 2 x 10 (-7) cm (2)/s. We call these flat constructs "bacterial carpets". When attached to polystyrene beads or to fragments of polydimethylsiloxane, the bacteria generated both translation …
NettetMany swimming microorganisms are able to propel themselves by the organized beating motion of numerous short flagella or cilia attached to their body surface. For their small size and the inherently viscous nature of the motion, this mechanism is very effective and they can swim several body lengths per second. Nettet1. apr. 2015 · 2. Experimental2.1. PDMS treatment for cell attachment. To investigate surface treatment for EB attachment, we prepared 4 conditions; A: Plastic cell culture dish (positive control), B: non-treated PDMS, C: PDMS coated with 0.1% gelatin (Millipore) for 1 h at 37 °C, D: PDMS treated with O 2 plasma for 30 s using a plasma exposure device …
NettetIn this work, we outline a methodology for determining optimal helical flagella placement and phase shift that maximize fluid pumping through a rectangular flow meter above a simulated bacterial carpet. This method uses a Genetic Algorithm (GA) combined with a gradient-based method, the Broyden-Fletcher-Goldfarb-Shanno (BFGS) algorithm, to … Nettet1. apr. 2004 · Moving Fluid with Bacterial Carpets Authors: Nicholas Darnton Linda Turner Harvard University Kenneth S Breuer Brown University Howard C Berg Abstract …
NettetThe study of fluid flow or pumping by bacterial carpets has been of significant interest in microfluidics for the past couple of decades. There are numerous experimental studies …
Nettet6. okt. 2005 · Microorganisms such as bacteria and many eukaryotic cells propel themselves with hair-like structures known as flagella, which can exhibit a variety of structures and movement patterns 1. santa cruz county ca building deptNettet1. mar. 2004 · We created active bacterial carpets that move fluids over an area of 3 cm 2 and a depth of ~50 μm. The carpets were made by blotting PDMS-coated glass onto a … santa cruz county buildingNettet8. okt. 2013 · Colloidal particles undergo perpetual Brownian motion resulting from the stochastic and rapid collisions with solvent molecules. As a result, an ensemble of colloidal particles spreads diffusively... short panama canal cruiseNettet28. jun. 2024 · Next, we characterized the dependence of bacteriabot movement on the number of attached bacteria ... Breuer, K. & Berg, H. C. Moving fluid with bacterial carpets. Biophys J 86, 1863–1870 (2004). short panchatantra stories in englishNettet8. okt. 2013 · Bacteria can spontaneously deliver an initially homogeneous ensemble of 2 μm colloids into a 16 × 16 μm 2 accumulation area within a timescale of 20 min. The … short panatellaNettet26. mar. 2024 · This idea of interfacial mixing may also be applied to bacteria moving on water–oil interfaces 91,92 for bioremediation of oil spills 93,94. Methods Individual flow fields short palm treesNettet7. mar. 2024 · The smallest crumbs are easily absorbed by the vacuum cleaner. If the candle wax stain cannot be completely removed this way, you have two options: cold or heat treatment. For cold treatment, place ice cubes in a freezer bag and place them on the stain for at least 15 minutes. The wax is then easier to remove by hand. short panama canal cruises