Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Momentum Transfer to Nanoobjects between Parallel Heated Plates   A small-scale, trapezoidal rigid body in the gas-filled gap between two
parallel plates at different temperatures is considered. An analytical
expression for the force onto the body in the direction parallel to the plates
valid for an infinite Knudsen number is derived. Simultaneously, Monte-Carlo
simulations are performed allowing to extend the analysis to Knudsen numbers of
the order of one. The numerical and the analytical results show excellent
agreement, indicating that a temperature gradient orthogonal to the plates can
induce a significant force in parallel direction. This force is only slightly
reduced when a Knudsen number of one is considered. In the future, the
discovered effect may be exploited for the conversion of thermal into
mechanical energy in nanomachines.

8
The categories of this paper are: hep-ex
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex
29
The categories of this paper are: funct-an