Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CO$_2$-driven diffusiophoresis for removal of bacteria   We investigate CO$_2$-driven diffusiophoresis of colloidal particles and
bacterial cells in a Hele-Shaw geometry. Combining experiments and a model, we
understand the characteristic length and time scales of CO$_2$-driven
diffusiophoresis in relation to system dimensions and CO$_2$ diffusivity.
Directional migration of wild-type V. cholerae and a mutant lacking flagella,
as well as S. aureus and P. aeruginosa, near a dissolving CO$_2$ source shows
that diffusiophoresis of bacteria is achieved independent of cell shape and
Gram stain. Long-time experiments suggest possible applications for bacterial
diffusiophoresis to cleaning systems or anti-biofouling surfaces.

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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
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The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
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The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
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The categories of this paper are: comp-gas
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The categories of this paper are: econ
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The categories of this paper are: supr-con
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The categories of this paper are: math-ph
2
The categories of this paper are: math