Controlling the preferential motion of chiral molecular walkers on a surface.

ABSTRACT: Molecular walkers standing on two or more "feet" on an anisotropic periodic potential of a crystal surface may perform a one-dimensional Brownian motion at the surface-vacuum interface along a particular direction in which their mobility is the largest. In thermal equilibrium the molecules move with equal probabilities both ways along this direction, as expected from the detailed balance principle, well-known in chemical reactivity and in the theory of molecular motors. For molecules that possess an asymmetric potential energy surface (PES), we propose a generic method based on the application of a time-periodic external stimulus that would enable the molecules to move preferentially in a single direction thereby acting as Brownian ratchets. To illustrate this method, we consider a prototy

SUBMITTER: Abbasi-Perez D 

PROVIDER: S-EPMC6582760 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature