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Single Macromolecule Diffusion in Confined Environments
Author(s) -
Mears Matthew,
Tarmey Drew S.,
Geoghegan Mark
Publication year - 2011
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201100076
Subject(s) - diffusion , molecule , macromolecule , nanotechnology , chemical physics , membrane , molecular diffusion , chemistry , biological system , biophysics , physics , materials science , biology , engineering , thermodynamics , metric (unit) , biochemistry , operations management , organic chemistry
We consider the behaviour of single molecules on surfaces and, more generally, in confined environments. These are loosely split into three sections: single molecules in biology, the physics of single molecules on surfaces and controlled (directed) diffusion. With recent advances in single molecule detection techniques, the importance and mechanisms of single molecule processes such as localised enzyme production and intracellular diffusion across membranes has been highlighted, emphasising the extra information that cannot be obtained with techniques that present average behaviour. Progress has also been made in producing artificial systems that can control the rate and direction of diffusion, and because these are still in their infancy (especially in comparison to complex biological systems), we discuss the new physics revealed by these phenomena.