Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Study of acoustic emission due to vaporisation of superheated droplets
  at higher pressure   The bubble nucleation in superheated liquid can be controlled by adjusting
the ambient pressure and temperature. At higher pressure the threshold energy
for bubble nucleation increases and we have observed that the amplitude of the
acoustic emission during vaporisation of superheated droplet decreases with
increase in pressure at any given temperature. Other acoustic parameters such
as the primary harmonic frequency and the decay time constant of the acoustic
signal also decrease with increase in pressure. It is independent of the type
of superheated liquid. The decrease in signal amplitude limits the detection of
bubble nucleation at higher pressure. This effect is explained by the
microbubble growth dynamics in superheated liquid.

34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
24
The categories of this paper are: dg-ga
11
The categories of this paper are: hep-lat
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
17
The categories of this paper are: q-fin