Allan Variance Analysis as Useful Tool to Determine Noise in Various Single-Molecule Setups - Physics > Data Analysis, Statistics and ProbabilityReport as inadecuate




Allan Variance Analysis as Useful Tool to Determine Noise in Various Single-Molecule Setups - Physics > Data Analysis, Statistics and Probability - Download this document for free, or read online. Document in PDF available to download.

Abstract: One limitation on the performance of optical traps is the noise inherentlypresent in every setup. Therefore, it is the desire of most experimentalists tominimize and possibly eliminate noise from their optical trapping experiments.A step in this direction is to quantify the actual noise in the system and toevaluate how much each particular component contributes to the overall noise.For this purpose we present Allan variance analysis as a straightforwardmethod. In particular, it allows for judging the impact of drift which givesrise to low-frequency noise, which is extremely difficult to pinpoint by othermethods. We show how to determine the optimal sampling time for calibration,the optimal number of data points for a desired experiment, and we providemeasurements of how much accuracy is gained by acquiring additional datapoints. Allan variances of both micrometer-sized spheres and asymmetricnanometer-sized rods are considered.



Author: Fabian Czerwinski, Andrew C. Richardson, Christine Selhuber-Unkel, Lene B. Oddershede

Source: https://arxiv.org/







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