detection and identification of molecules has immense impact not only on
fundamental research but also on the various applications from environmental
monitoring to medical and clinical diagnosis. The mid-infrared vibrational spectroscopy offers a unique label-free detection scheme thanks to the
characteristic light absorption features of molecules in the mid-infrared
wavelengths. However, the sizes of
molecules are typically on the order of nanometers as opposed to microns of
mid-infrared wavelengths, three orders of magnitude difference, resulting in
weak absorption features and making detection of low concentration and small
changes extremely challenging.
project aims at developing a sensing platform based on a novel nanostructures in
order to enhance the sensitivity of molecular detection for mid-infrared
project, the student will tackle either one of two challenges:
of nanostructures by using COMSOL software (Theoretical MSc project), or
Fabrication of nanostructures at DTU Nanolab (Experimental MSc project)
applications. Depending on the interests of the candidate 1) and 2) can also be
theoretical project, the candidate will perform numerical modelling and analysis
of nanostructures by using COMSOL or LUMERICAL software at the “Metamaterials group” at DTU Fotonik.
Moreover, for the experimental project, the candidate will perform
nanofabrication tasks in Nanolab’s clean room facilities to develop a fabrication
process of nanostructures that can be used for molecular sensing by Fourier
Transform Infrared Spectroscopy.
Goals of the project
Theoretical MSc Project
innovative nanostructures for molecular sensing in mid-infrared vibrational spectroscopy
and analyze the nanophotonics phenomena in nanostructures
Experimental MSc Project
the designed nanostructures
the fabricated nanostructures for sensing of analytes
Skills/knowledge acquired through the project
and characterization techniques for nanostructures
- Deep Ultraviolet (DUV)
- Deep Reactive Ion Etching (DRIE),
- Atomic Layer Deposition (ALD),
- Scanning Electron Microscopy (SEM),
- Spin-coating, cleaning schemes of Si wafer,
- Fourier Transform Infrared
Theoretical and simulation skills
- COMSOL or LUMERICAL software,
- Sensing by surface plasmon resonance (SPR) sensing, mid-infrared vibratioal spectroscopy
Moreover, during the project period, the student will participate in weekly group meeting, monthly Nanophotonics section seminar, and Photonics department seminar.
Note that 30 ECTS credits is 5 months and 35 ECTS credits is 6 months master project.
- High aspect ratio plasmonic nanotrench structures with large active surface area for label-free mid-infrared molecular absorption sensing, E. Shkondin, T. Repän, M. E. Aryaee Panah, A. V. Lavrinenko, and O. Takayama, ACS Appl. Nano Mater. 1, 1212-1218 (2018).
Basic knowledge of optics, photonics, and/or electromagnetics