Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Near-field thermal imaging of nanostructured surfaces   We show that a near-field scanning thermal microscope, which essentially
detects the local density of states of the thermally excited electromagnetic
modes at nanometer distances from some material, can be employed for nanoscale
imaging of structures on that material's surface. This finding is explained
theoretically by an approach which treats the surface structure perturbatively.

8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
30
The categories of this paper are: q-alg
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
36
The categories of this paper are: cmp-lg
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
5
The categories of this paper are: gr-qc