Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of photoelectric nonvolatile memory and oscillations in VO2
  at room temperature   Vanadium dioxide (VO2) is a phase change material that can reversibly change
between high and low resistivity states through electronic and structural phase
transitions. Thus far, VO2 memory devices have essentially been volatile at
room temperature, and nonvolatile memory has required non-ambient surroundings
(e.g., elevated temperatures, electrolytes) and long write times. Here, we
report the first observation of optically addressable nonvolatile memory in VO2
at room temperature with a readout by voltage oscillations. The read and write
times had to be kept shorter than about 150 {\mu}s. The writing of the memory
and onset of the voltage oscillations had a minimum optical power threshold.
This discovery demonstrates the potential of VO2 for new computing devices and
architectures, such as artificial neurons and oscillatory neural networks.

12
The categories of this paper are: nucl-th
36
The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
25
The categories of this paper are: patt-sol
26
The categories of this paper are: bayes-an
8
The categories of this paper are: hep-ex
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph