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Controlled Nanoscale Motion, p. 181-199

DOI: 10.1007/3-540-49522-3_9

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Brownian Motion after Einstein: Some new applications and new experiments

Journal article published in 2006 by David Selmeczi, Erik Schaeffer, Simon F. Tolic-Norrelykke, E. Schäffer, Peter H. Hagedorn, Stephan Mosler, Kirstine Berg-Sørensen ORCID, Niels B. Larsen, Henrik Flyvbjerg
This paper is available in a repository.
This paper is available in a repository.

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Abstract

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.