Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Nanostructured clathrates and clathrate-based nanocomposites   Intermetallic clathrates are candidate materials for thermoelectric
applications above room temperature. Here we explore whether their
intrinsically low lattice thermal conductivities can be further reduced by
nanostructuring and whether this can further enhance their thermoelectric
performance.}{As bulk nanostructuring routes we studied melt spinning and ball
milling. To optimize the compaction process and/or stabilize the nanostructure
we varied the process parameters, used additives, and studied clathrate-based
composites. Initial results on clathate nanowires as simpler model
nanostructures are also presented.

28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
11
The categories of this paper are: hep-lat
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
16
The categories of this paper are: stat
30
The categories of this paper are: q-alg