Optimal least-squares estimators of the diffusion constant from a single Brownian trajectory
MEJÍA-MONASTERIO, Carlos
Laboratory of Physical Properties
Department of Mathematics and Statistics [Helsinki]
Voir plus >
Laboratory of Physical Properties
Department of Mathematics and Statistics [Helsinki]
MEJÍA-MONASTERIO, Carlos
Laboratory of Physical Properties
Department of Mathematics and Statistics [Helsinki]
< Réduire
Laboratory of Physical Properties
Department of Mathematics and Statistics [Helsinki]
Langue
en
Article de revue
Ce document a été publié dans
The European Physical Journal. Special Topics. 2013, vol. 216, n° 1, p. 57-71
EDP Sciences
Résumé en anglais
Modern developments in microscopy and image processing are revolutionising areas of physics, chemistry, and biology as nanoscale objects can be tracked with unprecedented accuracy. However, the price paid for having a ...Lire la suite >
Modern developments in microscopy and image processing are revolutionising areas of physics, chemistry, and biology as nanoscale objects can be tracked with unprecedented accuracy. However, the price paid for having a direct visualisation of a single particle trajectory with high temporal and spatial resolution is a consequent lack of statistics. This naturally calls for reliable analytical tools which will allow one to extract the properties specific to a statistical ensemble from just a single trajectory. In this article we briefly survey different analytical methods currently used to determine the ensemble average diffusion coefficient from single particle data and then focus specifically on weighted least-squares estimators, seeking the weight functions for which such estimators are ergodic. Finally, we address the question of the effects of disorder on such estimators.< Réduire
Origine
Importé de halUnités de recherche