UPH Electrical Engineering Presents Guest Lecturer From Institute of Nanotechnology, Karlsruhe Institute of Technology, German

Starting the new semester, UPH Electrical Engineering held a weekly seminar by inviting a speaker Dr. Aimi Abass, the project leader of ?Photon Management For Energy Harvesting? at Karlsruhe Institute of Technology. Dr. Aimi Abass is the alumni of UPH batch 2003 that graduated on 2007. After graduating from UPH, Dr. Abass received a scholarship of Erasmus Mundus (Action 1) to continue on a master program at Royal Institute of Technology (KTH) Sweden and Ghent University, Belgium. Having been finished with the master program, Dr. Abass received a scholarship from Flemish IWT-SBO for Ph.D. at Ghent University in ?Nanostructures For Enhancing Light-Matter Interaction? at solar cell research group.

In the guest lecture session attended by students and lecturers of UPH Electrical Engineering, Dr. Abass shared about a technique to manipulate electromagnetic structure with conformal mapping to bend the light through certain path. This technique is known as ?transformation optics?. Transformation optics is the most used technique in designing optical cloaking metamaterial, the invisible cloak that can make something look invisible, just like in Harry Potter fiction.

In the presentation, Dr. Abass shared about how to use transformation optics to make a more efficient LED (Light Emitting Diode). Due to a high refractive index of the semiconductor substrate used in LED production, there is only 20% light can get out to the air, while the rest is trapped to be substrate mode or waveguide mode and eventually becomes heat.