Research projects offered as TFG in Physics (Degree in Physics at UAB) 2017

1.- Photoresponse of non-centrosymmetric materials

Supervisors: Josep Fontcuberta & Ignasi Fina

 

Brief description of the objectives

Non-centrosymmetric materials have unique properties that could be of the highest interest for efficient photovoltaic energy conversion. The aim of the proposed TFG is that the student get used with the concepts involved in the photoresponse of non-centro-symmetric materials and the methods to study and understand it.

 

Brief description of the methodology

The project will include the electric characterization of ferroelectric and other polar materials (mainly thin films only few tens of nanometer thick) and their photoresponse. The samples will be illuminated with light of various wavelengths and polarization and the photoresponse will be determined. The candidate will participate to the weekly meetings of our research group, learning how to present and discus experimental results.

 

2.- Using light to study new materials for electronics

Supervisors: Gervasi Herranz

 

Brief description of the objectives

In our lab we are investigating new materials for applications in information technologies. One of our research lines aims at modulating the information stored in magnetic moments by the application of electric field pulses that, in turn, generate strain waves that stretch/squeeze locally the ferromagnet and change its magnetic state. We study these phenomena optically: the student will be trained in optical imaging and spectroscopy.

 

Brief description of the methodology

The candidate will have access to our advanced optical laboratory, which includes optical spectroscopy and high-resolution imaging tools. The candidate will follow an intensive training, so as to ensure a solid understanding of the techniques. The student will be acquainted with state-of-the art techniques that allow real-space mapping of optical responses with diffraction limitation That allows the visualization of features below the micron down to just a few of hundreds of nanometers, enabling direct imaging of small devices and high sensitivity to magnetic fields. The optical lab at ICMAB is suited to visualize plasmon propagation in real space as well as in reciprocal space, i.e., plasmonic and photonic band dispersions can be obtained from throughout near-IR to near-UV frequencies.