Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Liquid crystalline cellulose-based nematogels   Physical properties of composite materials can be pre-engineered by
controlling their structure and composition at the mesoscale. Yet, approaches
for achieving this are limited and rarely scalable. We introduce a new breed of
self-assembled nematogels formed by an orientationally ordered network of thin
cellulose nanofibers infiltrated with a thermotropic nematic fluid. The
interplay of orientational ordering within the nematic network and that of the
small-molecule liquid crystal around it yields a composite with highly tunable
optical properties. By means of combining experimental characterization and
modeling, we demonstrate sub-millisecond electric switching of transparency and
facile responses of the composite to temperature changes. Finally, we discuss a
host of potential technological uses of these self-assembled nematogel
composites, ranging from smart and privacy windows to novel flexible displays.

3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
27
The categories of this paper are: comp-gas
35
The categories of this paper are: mtrl-th
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
11
The categories of this paper are: hep-lat
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th