Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Single-Molecule Observation of Long Jumps in Polymer Adsorption   Single-molecule fluorescence imaging of adsorption onto initially-bare
surfaces shows that polymer chains need not localize immediately after arrival.
In a system optimized to present limited adsorption sites (quartz surface to
which polyethylene glycol (PEG) is exposed in aqueous solution at pH = 8.2) we
find that some chains diffuse back into bulk solution and re-adsorb at some
distance away, sometimes multiple times before either they localize at a stable
position or else diffuse away into bulk solution. This mechanism of surface
diffusion is considerably more rapid than the classical model in which adsorbed
polymers crawl on surfaces while the entire molecule remains adsorbed. The
trajectories with jumps follow a truncated Levy distribution of step size with
limiting slope -2.5, consistent with a well-defined, rapid surface diffusion
coefficient over the times we observe.

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The categories of this paper are: hep-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
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The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
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The categories of this paper are: math
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol