Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stable integration of isolated cell membrane patches in a nanomachined
  aperture: a step towards a novel device for membrane physiology   We investigate the microscopic contact of a cell/semiconductor hybrid. The
semiconductor is nanostructured with the aim of single channel recording of ion
channels in cell membranes. This approach will overcome many limitations of the
classical patch-clamp technique. The integration of silicon-based devices
'on-chip' promises novel types of experiments on single ion channels.

30
The categories of this paper are: q-alg
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph