Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A scheme for simulating multi-level phase change photonics materials   Chalcogenide phase change materials (PCMs) have been extensively applied in
data storage, and they are now being proposed for high resolution displays,
holographic displays, reprogrammable photonics, and all-optical neural
networks. These wide-ranging applications all exploit the radical property
contrast between the PCMs different structural phases, extremely fast switching
speed, long-term stability, and low energy consumption. Designing PCM photonic
devices requires an accurate model to predict the response of the device during
phase transitions. Here, we describe an approach that accurately predicts the
microstructure and optical response of phase change materials during laser
induced heating. The framework couples the Gillespie Cellular Automata approach
for modelling phase transitions with effective medium theory and Fresnel
equations. The accuracy of the approach is verified by comparing the PCM
optical response and microstructure evolution with the results of nanosecond
laser switching experiments. We anticipate that this approach to simulating the
switching response of PCMs will become an important component for designing and
simulating programmable photonics devices. The method is particularly important
for predicting the multi-level optical response of PCMs, which is important for
all-optical neural networks and PCM-programmable perceptrons.

34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat
1
The categories of this paper are: cs