Chlamylipo, a Chlamydomonas-in-liposome microswimmer: self-propelled swimming and related lipid membrane movement

Abstract

Developing energetic transport methods for microcargo supply is difficult and requires overcoming the low Reynolds quantity constraints. We developed a bio-hybrid micro-swimmer, “chlamylipo” consisting of the inexperienced alga Chlamydomonas reinhardtii, encapsulated inside an enormous liposome. Although inside encapsulation gives cargo safety, it requires a mechanism to transmit the propulsion drive throughout a closed membrane. We demonstrated that chlamylipo exhibited ahead swimming and phototactic directional management. High-speed imaging of membrane form and fluid movement revealed that the driving drive originated from periodic membrane deformations and was accompanied by attribute fluid dynamics. Flow evaluation confirmed speedy oscillations at tens of hertz equivalent to flagellar beating, superimposed on slower axial migration at roughly 4 Hz related to cell rotation. Corresponding movement signatures had been additionally detected within the exterior fluid, indicating mechanical coupling throughout the lipid bilayer. Membrane area monitoring additional confirmed that fluid motions inside and outdoors the membrane had been coupled via viscous friction and membrane deformation, producing a attribute four-vortex movement discipline in step with a two-point drive mannequin. Together, these outcomes recommend that membrane movement primarily displays drive transmission throughout the bilayer, whereas ahead propulsion is primarily pushed by periodic membrane deformation. This research elucidates the bodily mechanism of drive transmission in encapsulated swimmers, demonstrating that inside hydrodynamic energy can successfully drive the movement of macroscopic containers.