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|Title:||Directional fidelity of nanoscale motors and particles is limited by the 2nd law of thermodynamics - Via a universal equality|
|Authors:||Wang, Z. |
|Source:||Wang, Z., Hou, R., Efremov, A. (2013). Directional fidelity of nanoscale motors and particles is limited by the 2nd law of thermodynamics - Via a universal equality. Journal of Chemical Physics 139 (3) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.4813626|
|Abstract:||Directional motion of nanoscale motors and driven particles in an isothermal environment costs a finite amount of energy despite zero work as decreed by the 2nd law, but quantifying this general limit remains difficult. Here we derive a universal equality linking directional fidelity of an arbitrary nanoscale object to the least possible energy driving it. The fidelity-energy equality depends on the environmental temperature alone; any lower energy would violate the 2nd law in a thought experiment. Real experimental proof for the equality comes from force-induced motion of biological nanomotors by three independent groups - for translational as well as rotational motion. Interestingly, the natural self-propelled motion of a biological nanomotor (F1-ATPase) known to have nearly 100% energy efficiency evidently pays the 2nd law decreed least energy cost for direction production. © 2013 AIP Publishing LLC.|
|Source Title:||Journal of Chemical Physics|
|Appears in Collections:||Staff Publications|
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