article · 09/06/2014
Accelerating search kinetics by following boundaries
Résumé
We derive exact expressions of the mean first-passage time to a bulk target for a random searcher that performs boundary-mediated diffusion in a circular domain. Although nonintuitive for bulk targets, it is found that boundary excursions, if fast enough, can minimize the search time. A scaling analysis generalizes these findings to domains of arbitrary shapes and underlines their robustness. Overall, these results provide a generic mechanism of optimization of search kinetics in interfacial systems, which could have important implications in chemical physics. In the context of animal behavior sciences, it shows that following the boundaries of a domain can accelerate a search process, and therefore suggests that thigmotactism could be a kinetically efficient behavior.
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Calandre, T., Benichou, O., & Voituriez, R. (2014). Accelerating search kinetics by following boundaries. PHYSICAL REVIEW LETTERS, 112(23). https://doi.org/10.1103/PhysRevLett.112.230601@article{Calandre2014_221,
author = {Calandre, T. and Benichou, O. and Voituriez, R.},
year = {2014},
month = {6},
title = {Accelerating search kinetics by following boundaries},
journal = {PHYSICAL REVIEW LETTERS},
volume = {112},
number = {23},
abstract = {We derive exact expressions of the mean first-passage time to a bulk target for a random searcher that performs boundary-mediated diffusion in a circular domain. Although nonintuitive for bulk targets, it is found that boundary excursions, if fast enough, can minimize the search time. A scaling analysis generalizes these findings to domains of arbitrary shapes and underlines their robustness. Overall, these results provide a generic mechanism of optimization of search kinetics in interfacial systems, which could have important implications in chemical physics. In the context of animal behavior sciences, it shows that following the boundaries of a domain can accelerate a search process, and therefore suggests that thigmotactism could be a kinetically efficient behavior.},
url = {http://www.dx.doi.org/10.1103/PhysRevLett.112.230601},
doi = {10.1103/PhysRevLett.112.230601},
issn = {0031-9007},
}TY - JOUR
AU - Calandre, T.
AU - Benichou, O.
AU - Voituriez, R.
PY - 2014
DA - 2014/06/09
TI - Accelerating search kinetics by following boundaries
JO - PHYSICAL REVIEW LETTERS
VL - 112
IS - 23
SN - 0031-9007
AB - We derive exact expressions of the mean first-passage time to a bulk target for a random searcher that performs boundary-mediated diffusion in a circular domain. Although nonintuitive for bulk targets, it is found that boundary excursions, if fast enough, can minimize the search time. A scaling analysis generalizes these findings to domains of arbitrary shapes and underlines their robustness. Overall, these results provide a generic mechanism of optimization of search kinetics in interfacial systems, which could have important implications in chemical physics. In the context of animal behavior sciences, it shows that following the boundaries of a domain can accelerate a search process, and therefore suggests that thigmotactism could be a kinetically efficient behavior.
DO - 10.1103/PhysRevLett.112.230601
UR - http://www.dx.doi.org/10.1103/PhysRevLett.112.230601
ER -