Responsibilities and tasks
The project is a strategic DTU Nanolab initiative to strengthen our research profile in nanofabrication and nanoscale electron beam characterization of metasurfaces. The PhD project will be carried out under the supervision of Prof. Rafael Taboryski and Dr. Shima Kadkhodazadeh.
Tasks:
- You will fabricate plasmonic metasurfaces in our cleanroom using steps of nanolithography, deep reactive ion etching, and metal deposition;
- You will carry out structural characterization of the fabricated surfaces using scanning electron microscopy (SEM);
- You will carry out optical characterization of the fabricated surfaces using optical transmission and reflection spectroscopy in the ultraviolet, visible, and infrared wavelengths;
- You will employ finite element methods to model the measured reflectance spectra, and you will calculate the E-field distribution in the vicinity of the surfaces at the plasmonic resonance wavelengths;
- You will contribute to developing platforms for light illumination inside a transmission electron microscope (TEM);
- You will apply advanced electron microscopy methods, such as electron energy-loss spectroscopy and electron holography, to map the plasmonic resonances and E-field distribution of the metasurfaces, and compare the results with optical characterization and finite element models;
- You will contribute to teaching at DTU Nanolab in hands-on microfabrication and characterization courses;
- You will take part in supervision of BSc and MSc students in projects related to your PhD project.
When fabricating the surfaces you will employ either electron beam lithography or super-resolution deep UV lithography for pattern definition, and deep reactive etching methods for pattern transfer to Si. In addition, you will apply various thin film deposition methods. In situ optical illumination of samples in TEM will be implemented through the design of new sample holders.
Further information
Further information may be obtained from Professor Rafael Taboryski, email: rata@dtu.dk
You can read more about DTU Nanolab at www.nanolab.dtu.dk