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Burnham, D.R. (author), De Vlaminck, I. (author), Henighan, T. (author), Dekker, C. (author)Measurements in magnetic tweezers rely upon precise determination of the position of a magnetic microsphere. Fluctuations in the position due to Brownian motion allows calculation of the applied force, enabling deduction of the force-extension response function for a single DNA molecule that is attached to the microsphere. The standard approach...journal article 2014