Swimming Efficiency of Bacterium Escherichia Coli

Details Swimming Efficiency of Bacterium Escherichia Coli Swimming Efficiency of Bacterium Escherichia Coli

2005-12-22

arxiv.org/abs/physics/0512219v1

Physics

Biological Physics

6 pages

Scientific paper

10.1073/pnas.0602043103

We use in vivo measurements of swimming bacteria in an optical trap to determine fundamental properties of bacterial propulsion. In particular, we determine the propulsion matrix, which relates the angular velocity of the flagellum to the torques and forces propelling the bacterium. From the propulsion matrix dynamical properties such as forces, torques, swimming speed and power can be obtained from measurements of the angular velocity of the motor. We find significant heterogeneities among different individuals even though all bacteria started from a single colony. The propulsive efficiency, defined as the ratio of the propulsive power output to the rotary power input provided by the motors, is found to be 0.2%.

Affiliated with

Also associated with

No associations

Rating

Swimming Efficiency of Bacterium Escherichia Coli does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Swimming Efficiency of Bacterium Escherichia Coli, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swimming Efficiency of Bacterium Escherichia Coli will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-697081