Researchers at TU Delft have discovered that E. coli bacteria can synchronize their movements, creating order in seemingly random biological systems. By trapping individual bacteria in micro-engineered circular cavities and coupling these cavities through narrow channels, the team observed coordinated bacterial motion.
Researchers at TU Delft have discovered that E. coli bacteria can synchronize their movements, creating order in seemingly random biological systems. By trapping individual bacteria in micro-engineered circular cavities and coupling these cavities through narrow channels, the team observed coordinated bacterial motion.
These findings have potential applications in engineering controllable biological oscillator networks. Researchers at TU Delft have discovered that E. coli bacteria can synchronise their movements, creating order in seemingly random biological systems. By trapping individual bacteria in micro-engineered circular cavities and coupling these cavities through narrow channels, the team observed coordinated bacterial motion. Their findings, which have potential applications in engineering controllable biological oscillator networks, were recently published inAn audience clapping in rhythm, fireflies flashing in unison, or flocks of starlings moving as one -- synchronisation is a natural phenomenon observed across diverse systems and scales. First described by Christiaan Huygens in the 17th century, synchronisation was famously illustrated by the aligned swinging of his pendulum clocks. Now, TU Delft researchers have shown that even E. coli bacteria -- single-celled organisms only a few micrometres long -- can display this same phenomenon. "This was a remarkable moment for our team," said Farbod Alijani, associate professor at the Faculty of Mechanical Engineering."Seeing bacteria 'dance in sync' not only showcases the beauty of nature but also deepens our understanding of the microscopic origins of self-organisation among the smallest living organisms."Alijani's team, together with TU Delft professor Cees Dekker and the TU Delft spin-off SoundCell, achieved this by using precisely engineered microcavities that trap single E. coli cells from a bulk population. Inside these circular cavities, the bacteria began to exhibit rotary motion akin to pendulum clocks. By connecting two of these cavities with a tiny channel, the researchers observed that after some time, the two bacteria began to synchronise their movements. "This synchronisation occurs because of hydrodynamic interactions induced by the movement of bacteria in the coupled system," explains Alijani. The team quantified this coupling strength and found that the bacteria's coordinated motion adhered to universal mathematical rules of synchronisation.The findings hold significant promise, paving the way for designing micro-tools capable of inducing controlled oscillations and synchronisation in bacterial systems. Such tools could help scientists study bacterial motility and coordination in confined environments, providing a better understanding of microbial active matter. The team is now exploring more complex systems by coupling multiple cavities to form networks of synchronised bacteria."We want to uncover how these networks behave and whether we can engineer even more sophisticated dynamical movements," Alijani adds.While this research is primarily fundamental, its potential applications are wide-ranging."This could even provide a novel approach to drug screening, for instance, by measuring fluid flow changes and forces caused by bacterial movement before and after administering antibiotics," Alijani suggests. The study was inspired by earlier work where Alijani's team recorded the first-ever sound of a single bacterium using a graphene drum."We were curious if we could go a step further and create order out of the chaotic oscillations we observed," says Alijani. With this study, they've moved from recording the soundtrack of a single bacterium to orchestrating their 'tango'. Aleksandre Japaridze, Victor Struijk, Kushal Swamy, Ireneusz Rosłoń, Oriel Shoshani, Cees Dekker, Farbod Alijani.Scientists have developed a new method to simulate the complex movements of animals with exceptional accuracy. The research team set out to solve a long-standing challenge in biology -- how to ... Bacteria possess unique traits with great potential for benefiting society. However, current genetic engineering methods to harness these advantages are limited to a small fraction of bacterial ... Scientists have long tried to introduce genetically engineered bacteria into the gut to treat diseases. In the past, these attempts have focused on engineering common lab strains of E. coli, which ... Fish and seaweed secrete a layer of mucus to create a slippery surface, reducing their friction as they travel through water. A potential way to mimic this is by creating lubricant-infused surfaces ...
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