Abstract
Random and undirected forces are rectified in biological and synthetic systems using ratcheting mechanisms, which employ periodic asymmetric potentials and nonequilibrium conditions to produce useful transport. The density of motors or transported particles is known to strongly affect the nature and efficacy of transport in biological systems, as well as in synthetic ratchets and active swimmer systems. While experimental ratchet implementations typically employ potentials varying in two dimensions (2D), the role of the density of interacting particles in such a system has not been modeled. Prompted by experimental observations and building upon previous simulations, this paper describes the ratcheting process of interacting particles in a 2D flashing ratchet, studied using classical simulations. Increased particle density is found to allow effective ratcheting at higher driving frequencies, compared to the low-density or non-interacting case. High densities also produce a new ratcheting mode at low driving frequencies, based on independent trajectories of high kinetic-energy particles, more than doubling transport at low frequencies.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 6913-6921 |
| Number of pages | 9 |
| Journal | Journal of Physical Chemistry C |
| Volume | 123 |
| Issue number | 11 |
| DOIs | |
| State | Published - Mar 21 2019 |
Fingerprint
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Energy(all)
- Physical and Theoretical Chemistry
- Surfaces, Coatings and Films
Cite this
}
Cooperative Transport in a Multi-Particle, Multi-Dimensional Flashing Ratchet. / Kedem, Ofer; Weiss, Emily Allyn.
In: Journal of Physical Chemistry C, Vol. 123, No. 11, 21.03.2019, p. 6913-6921.Research output: Contribution to journal › Article
TY - JOUR
T1 - Cooperative Transport in a Multi-Particle, Multi-Dimensional Flashing Ratchet
AU - Kedem, Ofer
AU - Weiss, Emily Allyn
PY - 2019/3/21
Y1 - 2019/3/21
N2 - Random and undirected forces are rectified in biological and synthetic systems using ratcheting mechanisms, which employ periodic asymmetric potentials and nonequilibrium conditions to produce useful transport. The density of motors or transported particles is known to strongly affect the nature and efficacy of transport in biological systems, as well as in synthetic ratchets and active swimmer systems. While experimental ratchet implementations typically employ potentials varying in two dimensions (2D), the role of the density of interacting particles in such a system has not been modeled. Prompted by experimental observations and building upon previous simulations, this paper describes the ratcheting process of interacting particles in a 2D flashing ratchet, studied using classical simulations. Increased particle density is found to allow effective ratcheting at higher driving frequencies, compared to the low-density or non-interacting case. High densities also produce a new ratcheting mode at low driving frequencies, based on independent trajectories of high kinetic-energy particles, more than doubling transport at low frequencies.
AB - Random and undirected forces are rectified in biological and synthetic systems using ratcheting mechanisms, which employ periodic asymmetric potentials and nonequilibrium conditions to produce useful transport. The density of motors or transported particles is known to strongly affect the nature and efficacy of transport in biological systems, as well as in synthetic ratchets and active swimmer systems. While experimental ratchet implementations typically employ potentials varying in two dimensions (2D), the role of the density of interacting particles in such a system has not been modeled. Prompted by experimental observations and building upon previous simulations, this paper describes the ratcheting process of interacting particles in a 2D flashing ratchet, studied using classical simulations. Increased particle density is found to allow effective ratcheting at higher driving frequencies, compared to the low-density or non-interacting case. High densities also produce a new ratcheting mode at low driving frequencies, based on independent trajectories of high kinetic-energy particles, more than doubling transport at low frequencies.
UR - http://www.scopus.com/inward/record.url?scp=85063349701&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063349701&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.9b00344
DO - 10.1021/acs.jpcc.9b00344
M3 - Article
AN - SCOPUS:85063349701
VL - 123
SP - 6913
EP - 6921
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
SN - 1932-7447
IS - 11
ER -