Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enthalpy and high temperature relaxation kinetics of stable
  vapor-deposited glasses of toluene   Stable non-crystalline toluene films of micrometer and nanometer thicknesses
were grown by vapor deposition at distinct rates and probed by Fast Scanning
Calorimetry. Fast scanning calorimetry is shown to be extremely sensitive to
the structure of the vapor-deposited phase and was used to characterize
simultaneously its kinetic stability and its thermodynamic properties.
According to our analysis, transformation of vapor -deposited samples of
toluene during heating with rates in excess 10^5 K/s follows the zero-order
kinetics. The transformation rate correlates strongly with the initial enthalpy
of the sample, which increases with the deposition rate according to sub-linear
law. Analysis of the transformation kinetics of vapor deposited toluene films
of various thicknesses reveal a sudden increase in the transformation rate for
films thinner than 250 nm. The change in kinetics correlates with the surface
roughness scale of the substrate, which is interpreted as evidence for kinetic
anisotropy of the samples. The implications of these findings for the formation
mechanism and structure of vapor deposited stable glasses are discussed.

29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
17
The categories of this paper are: q-fin
6
The categories of this paper are: astro-ph
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
11
The categories of this paper are: hep-lat
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
15
The categories of this paper are: nucl-ex
16
The categories of this paper are: stat
8
The categories of this paper are: hep-ex
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas