Transport at Nanoscale Interfaces


Graphene transfer on TOPAS for flexible THz devices

The THz regime is the bridge between optics and electronics. Unfortunately, there is still a lack of ma-terials and devices in this area of the spectrum. We want to combine materials such as graphene with THz transparent polymers to develop new THz devices in this work. The project aims to optimize the graphene transfer on transparent polymer ( cyclic olefin copolymer - TOPAS). In addition, he/she will work on the characterization of graphene with state-of-the-art equipment (figure 1 (a&b).
We are looking for motivated students with a background in physics, material science, electrical engi-neering, or chemistry for a master thesis in Transport at Nanoscale Interfaces Laboratory at Empa.
During the project, the master student will work on:
  • The development of thin films using TOPAS
  • Raman Spectroscopy for the characterization of graphene
  • THz time-domain spectroscopy for extraction of the mobility of graphene
  • Matlab/python for analyzing data

Interested candidates can send an email with their CV with a short motivation letter to Dr. Elena Mavrona (; also, they can conduct her if they need further information.


Figure 1. a) Raman spectroscopy of graphene on TOPAS b) Microscope imgae from graphene on TOPAS.

Relevant references for the project:

  • Whelan et al., Non-contact mobility measurements of graphene on silicon carbide, Microelec-tronic Engineering, Volume 212, 1 May 2019, Pages 9-12
  • Ballesio et al., A novel hot embossing Graphene transfer process for flexible electronics, Micro-electronic Engineering, Volume 209, 15 March 2019, Pages 16-19