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Single-molecule diffusion in a periodic potential at a solid-liquid interface

Autor
Skaug, M.; Lacasta, A.M; Ramirez de La Piscina, L.; Sancho, J M; Lindenberg, K.; Schwartz, D.
Tipus d'activitat
Article en revista
Revista
Soft matter
Data de publicació
2014-02-07
Volum
10
Número
5
Pàgina inicial
753
Pàgina final
759
DOI
https://doi.org/10.1039/c3sm52160e Obrir en finestra nova
Resum
We used single-molecule tracking experiments to observe the motion of small hydrophobic fluorescent molecules at the interface between water and a solid surface that exhibited periodic chemical patterns. The dynamics were characterized by non-ergodic, continuous time random walk statistics. The step-size distributions displayed enhanced probability of steps to periodic distances, consistent with theoretical predictions for diffusion in an atomic/molecular scale periodic potential. Surprisingly, ...
Paraules clau
Characteristic length, Continuous time random walks, Fluorescent molecules, Interfacial diffusion, Single-molecule diffusion, Single-molecule tracking, Solid-liquid interfaces, Three orders of magnitude
Grup de recerca
BIOCOM-SC - Grup de Biologia Computacional i Sistemes Complexos
GICITED - Grup Interdiciplinari de Ciència i Tecnologia en l'Edificació

Participants