Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Liquid crystal elastomer coatings with programmed response of surface
  profile   Stimuli-responsive liquid crystal elastomers (LCEs) with a strong coupling of
orientational molecular order and rubber-like elasticity, show a great
potential as working elements in soft robotics, sensing, transport and
propulsion systems. We demonstrate a dynamic thermal control of the surface
topography of LCE coatings achieved through pre-designed patterns of in-plane
molecular orientation. These patterns determine whether the LCE coating
develops elevations, depressions, or in-plane deformations. The deterministic
dependence of the out-of-plane dynamic surface profile on the in-plane
orientational pattern is explained by activation forces. These forces are
caused by two factors: (i) stretching-contraction of the polymer networks
driven by temperature; (ii) spatially varying orientation of the LCE. The
activation force concept brings the responsive LCEs into the domain of active
matter. The demonstrated relationship can be used to design programmable
coatings with functionalities that mimic biological tissues such as skin.

16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
31
The categories of this paper are: ao-sci
1
The categories of this paper are: cs
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
27
The categories of this paper are: comp-gas
15
The categories of this paper are: nucl-ex
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
9
The categories of this paper are: nlin
12
The categories of this paper are: nucl-th