Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Distinct mechanisms of DNA sensing based on N-doped carbon nanotubes
  with enhanced conductance and chemical selectivity   Carrying out first-principles calculations, we study N-doped capped carbon
nanotube (CNT) electrodes applied to DNA sequencing. While we obtain for the
face-on nucleobase junction configurations a conventional conductance ordering
where the largest signal results from guanine according to its high highest
occupied molecular orbital (HOMO) level, we extract for the edge-on
counterparts a distinct conductance ordering where the low-HOMO thymine
provides the largest signal. The edge-on mode is shown to operate based on a
novel molecular sensing mechanism that reflects the chemical connectivity
between N-doped CNT caps that can act both as electron donors and electron
acceptors and DNA functional groups that include the hyperconjugated thymine
methyl group.

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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
20
The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ex
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-th
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs