Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Microswimmers in Patterned Environments   We demonstrate with experiments and simulations how microscopic
self-propelled particles navigate through environments presenting complex
spatial features, which mimic the conditions inside cells, living organisms and
future lab-on-a-chip devices. In particular, we show that, in the presence of
periodic obstacles, microswimmers can steer even perpendicularly to an applied
force. Since such behaviour is very sensitive to the details of their specific
swimming style, it can be employed to develop advanced sorting, classification
and dialysis techniques.

29
The categories of this paper are: funct-an
2
The categories of this paper are: math
1
The categories of this paper are: cs
22
The categories of this paper are: chao-dyn
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat