Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Inertial frictional ratchets and their load bearing efficiencies   We investigate the performance of an inertial frictional ratchet in a
sinusoidal potential driven by a sinusoidal external field. The dependence of
the performance on the parameters of the sinusoidally varying friction, such as
the mean friction coefficient and its phase difference with the potential, is
studied in detail. Interestingly, under certain circumstances, the
thermodynamic efficiency of the ratchet against an applied load shows a
non-monotonic behavior as a function of the mean friction coefficient. Also, in
the large friction ranges, the efficiency is shown to increase with increasing
applied load even though the corresponding ratchet current decreases as the
applied load increases. These counterintuitive numerical results are explained
in the text.

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The categories of this paper are: adap-org
1
The categories of this paper are: cs
16
The categories of this paper are: stat
36
The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
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The categories of this paper are: eess
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
35
The categories of this paper are: mtrl-th
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The categories of this paper are: chao-dyn
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The categories of this paper are: nlin
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an