Physics – Biological Physics
Scientific paper
2006-03-17
Controlled Nanoscale Motion, Nobel Symposium 131, Lecture Notes in Physics, Vol. 711, p. 181-199 (2007)
Physics
Biological Physics
18 pages, 5 figures, to appear in Proceedings of Nobel Symposium 131
Scientific paper
The first half of this chapter describes the development in mathematical models of Brownian motion after Einstein's seminal papers and current applications to optical tweezers. This instrument of choice among single-molecule biophysicists is also an instrument of precision that requires an understanding of Brownian motion beyond Einstein's. This is illustrated with some applications, current and potential, and it is shown how addition of a controlled forced motion on the nano-scale of the tweezed object's thermal motion can improve the calibration of the instrument in general, and make it possible also in complex surroundings. The second half of the present chapter, starting with Sect. 9, describes the co-evolution of biological motility models with models of Brownian motion, including very recent results for how to derive cell-type-specific motility models from experimental cell trajectories.
Berg-Sorensen Kirstine
Flyvbjerg Henrik
Hagedorn Peter H.
Larsen Niels B.
Mosler Stephan
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