Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Diffusion coefficients from signal fluctuations: Influence of molecular
  shape and rotational diffusion   Analysis of signal fluctuations of a locally fixed probe, caused by molecules
diffusing under the probe, can be used to determine diffusion coefficients.
Theoretical treatments so far have been limited to point-like particles or to
molecules with circle-like shapes. Here we extend these treatments to molecules
with rectangle-like shapes, for which also rotational diffusion needs to be
taken into account. Focusing on the distribution of peak widths in the signal,
we show how translational as well as rotational diffusion coefficients can be
determined. We address also the question, how the distribution of interpeak
time intervals and autocorrelation function can be employed for determining
diffusion coefficients. Our approach is validated against kinetic Monte Carlo
simulations.

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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
15
The categories of this paper are: nucl-ex
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
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The categories of this paper are: q-bio
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The categories of this paper are: math-ph
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an