deletions | additions       diff --git a/section_Abstract_Under_the_effects__.tex b/section_Abstract_Under_the_effects__.tex  index d174e50..496fe39 100644  --- a/section_Abstract_Under_the_effects__.tex  +++ b/section_Abstract_Under_the_effects__.tex 
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\section{Abstract}  Under the effects of a high electric field, the atoms on a metallic surface are evaporated breaking his bondings to the surface. In this work we will present the effects of high electric field, by the use of computational simulations, to different metallic surfaces: Al, Au, Ag, Pd. The presence of high electric fields of the order one hundred MeV/m or higher is becoming increasingly, as science and engineer continue to push boundaries. These kind of fields can be found in e.g. future particles accelerators, field emission microscopy, field ion microscopy and atom probes.Aswell recently works have been addressedthis phenomena in the search of 'napa subterranea'.These effects is a phenomenon presentat different at  In order to carry out the study, we will  use first principles technique based on Schr\"odinger equation alongside the  density functional theory by th euse of quantum-espresso approximation.  In this work we calculated the evaporation field which correspond to the meaning field that atoms from the surface can break their bonds and evaporated from the surface. The calculations were made using the  software suite. suiteQuantum-Espresso.  We have calculated the evaporation field of different ad-atoms on the surfaces using these techniques with the incoroporation of a high electric field applied to the surface. The evaporation field is defined as electric field at with theenergy barrier sizeis calculated as zero.