Anomalous kinetics of depletion zone growth with one-dimensional geometry: Photobleaching experiments and simulations

Hailin Peng, Sung Hyun Park, Haim Taitelbaum, Raoul Kopelman

Research output: Contribution to journalConference articlepeer-review

Abstract

We studied the kinetics of a diffusion-limited trapping reaction A + T → T in an effective one-dimensional geometry by experiments, supported by simulation calculations. The experiments are based on the photobleaching reaction of fluorescein dyes. The main parameter of interest is the θ-distance, which is related to the expansion of the depletion zone and can be measured directly from experiment. We found that θ-distance scales with t1/2 asymptotically, as predicted by previous theory. In addition, we found that the θ-distance increases faster than t 1/2 inside the trap at early times, which has not been explored previously. Furthermore, there is a third, intermediate regime, with a slow increase of slope. Our experimental results are consistent with our simulation results.

Original languageEnglish
Pages (from-to)65-70
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume790
DOIs
StatePublished - 2003
EventDynamics in Small Confining Systems - 2003 - Boston, MA, United States
Duration: 1 Dec 20034 Dec 2003

Fingerprint

Dive into the research topics of 'Anomalous kinetics of depletion zone growth with one-dimensional geometry: Photobleaching experiments and simulations'. Together they form a unique fingerprint.

Cite this