Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermo-elasto-plastic simulations of femtosecond laser-induced
  structural modifications: application to cavity formation in fused silica   The absorbed laser energy of a femtosecond laser pulse in a transparent
material induces a warm dense matter region which relaxation may lead to
structural modifications in the surrounding cold matter. The modeling of the
thermo-elasto-plastic material response is addressed to predict such
modifications. It has been developed in a 2D plane geometry and implemented in
a hydrodynamic lagrangian code. The particular case of a tightly focused laser
beam in the bulk of fused silica is considered as a first application of the
proposed general model. It is shown that the warm dense matter relaxation,
influenced by the elasto-plastic behavior of the surrounding cold matter,
generates both a strong shock and rarefaction waves. Permanent deformations
appear in the surrounding solid matter if the induced stress becomes larger
than the yield strength. This interaction results in the formation of a
sub-micrometric cavity surrounded by an overdense area. This approach also
allows one to predict regions where cracks may form. The present modeling can
be used to design nano-structures induced by short laser pulses.

31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con