**NEW** Nanometre optical characterization in TEM

Today, nanostructures exploiting optical phenomena are prevalent in fields ranging from telecommunications to solar cells, catalysis, biological sensing and medical diagnostics. New progress in these fields relies better understanding and control over the optical properties on the nanometre scale. This requires characterisation methods that are capable of probing optical and structural properties with nanometre spatial resolution. While light-based methods are the obvious choice, they are limited to spatial resolutions on the order of tens of nanometres at best. This project involves using electron microscopy to probe the optical properties of metallic or semiconductor nanostructures with sub-nanometre resolution. The results will be correlated with their morphology, micro/atomic structure and chemistry.

Learning objectives:

  • Learning to use an electron microscope
  • Learning how the permittivity and bandstructure can be probed in electron energy-loss spectroscopy (EELS)
  • Quantitative analysis of TEM images and EELS data

Contact

Shima Kadkhodazadeh
Senior Researcher
DTU Nanolab
+4545 25 64 94