Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Trapping of Single Nano-Objects in Dynamic Temperature Fields   In this article we explore the dynamics of a Brownian particle in a
feedback-free dynamic thermophoretic trap. The trap contains a focused laser
beam heating a circular gold structure locally and creating a repulsive thermal
potential for a Brownian particle. In order to confine a particle the heating
beam is steered along the circumference of the gold structure leading to a
non-trivial motion of the particle. We theoretically find a stability condition
by switching to a rotating frame, where the laser beam is at rest. Particle
trajectories and stable points are calculated as a function of the laser
rotations frequency and are experimentally confirmed. Additionally, the effect
of Brownian motion is considered. The present study complements the dynamic
thermophoretic trapping with a theoretical basis and will enhance the
applicability in micro- and nanofluidic devices.

31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
7
The categories of this paper are: hep-th
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
13
The categories of this paper are: quant-ph