Sanaa SHEHAYEB (LNER) will defend her Ph.D. dissertation entitled "Photothermal solar receptors obtained from the electrophoretic deposition of spectrally selective nanoparticles" on Thursday, November 30, 2017 at 2.00 pm (Beirut University, Lebanon).
Abstract:
The production of hot water by using efficient photothermal solar collectors is growing in importance to limit the use of fossil fuels. Black copper (CuO) has proved to be one of the viable solar-selective coatings owing to its nearly intrinsic properties. The formation of a tandem absorber based on CuO thin film deposited onto a highly IR reflecting metallic substrate is processed by electrophoretic deposition (EPD).
In this way, the stabilization of a CuO colloidal suspension is studied previously by adding Mg(NO3)2 in isopropanol (IPA) or polyethyleneimine (PEI) in water suspension. Both acts as positively charging agents and allow the realization of a cathodic EPD. The colloidal stability as a function of the stabilizing agent content is studied prior to EPD, by dynamic light scattering (DLS) coupled with laser doppler velocimetry.
