PhD. candidate Ronal A. De La Cruz Araujo is doing his doctoral’s degree in Chemical Engineering with specialty in colloidal physics in which he study the assembly and the rheological behavior of colloidal suspensions.
Ronal has been the opportunity of participate of a summer internship in the Physical and Life Sciences directorate at the Lawrence Livermore National Laboratory (LLNL) in Livermore, California. He was part of the Computational Chemistry Material Science (CCMS) program with a project which had the objective of extend a numerical model to study Electrophoretic Depositions (EPD) of charged nanoparticles. Electrophoretic deposition of colloidal particles is an active research area due to promising applications such as ceramic, microelectronic, optical, magnetic, and photonic materials. In EPD the driving force is the electric field. This causes deposition of particles over an electrode. The mechanism of deposit formation is not well understood because there are several competitive forces in the system. Furthermore, the electrical double layer (EDL) of charged particle can be deformed during the deposition. The EPD model implemented by scientists at LLNL and continued by Ronal during this summer 2016 will help to answer fundamental questions and to guide experimentalists, also from the LLNL, to design better devices in order to accomplish the grand challenges of the Laboratory.
Ronal presented his work and results in the Summer Poster Symposium in LLNL held in August 3 and 4, 2016. The title of his poster was “Model for Electrophoretic Deposition of Colloidal Mixtures”. Two hundred and sixty students from all over the world participated in the poster competition but only 33 students received awards for their presentation and contribution to the Laboratory. The awards were given to the top posters of each area of research: Engineering, Global Security, Computation, Physical and Life Sciences, National Ignition Facility, and others. Specifically in the Physical and Life Sciences directorate have participated 78 summer students and 8 were awarded, between them was Ronal representing to University of Puerto Rico – Mayagüez.
We want to congratulate Ronal in his achievement at Lawrence Livermore National Laboratory, and wish him success in his future achievements.