Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The effect of Immersion medium in optical tweezers   In this paper, we report on theoretical investigation of the effect of
refractive index of immersion oil on the position of optimal depth and optical
trap quality in optical tweezers. Using simple numerical calculation presented
here, one can study the optical trapping in different samples, after multi
interfaces and find the best choice of immersion oil for a particular case.

27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol