student profile: Mr El-abed Haidar


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Thesis work

Thesis title: First-principles studies of carbon-based structures for sensing, semiconducting and superconducting nano-electronic devices

Supervisors: Sherif ABBAS, Catherine STAMPFL

Thesis abstract:

The revolution of electronic devices has shown substantial enhancement in terms of functionality, structure and higher efficiency over the last few decades. This has been achieved via the continued miniaturization of devices and to continue this trend into the future it is essential that new discoveries and developments are unlocked. Intense research is being carried out by nano-electronic researchers around the world seeking promising alternatives to the current silicon based-nano technology. One recent alternative approach, is the replacement of the most fundamental component of the electronic device with carbon nanostructures. For example, graphene is a promising candidate for achieving smaller and faster transistors due to the exceptionally high electron mobility, however, the lack of a band-gap is a severe problem. Recent research indicates, however, that through various approaches, a band-gap can be engineered. Carbon-based nanomaterials, namely, fullerene, carbon nanotubes, and graphene, diamondoids are of high current attention since their discoveries, and will play an increasingly significant role in nanoscience and nanotechnology and new discoveries are made to control their fabrication and properties. The unique properties of carbon based nanostructures make them widely used in many fields ranging within material science, energy, environment, biology, and medicine.

In this PhD thesis, the main objective is to theoretically investigate and identify, through accurate quantum mechanical first-principles calculations, promising carbon-based structures for applications in the nano-technology industry such as sensors, semiconductors and superconductors. The investigation requires a detailed understanding of the properties of matter at the nano and atomic which will be achieved through the computations. The Density Functional Theory approach will be used as it is the most widely employed and successful method to solve the Schrödinger equation for the quantum mechanical description of the atomic structures. What specializes this methodology is the capability of utilizing it for interdisciplinary purposes from physical, to chemical, to biological and materials science and engineering. It is envisaged that the proposed studies to be undertaken will yield not only a better understanding of the properties and applications of carbon-based nano-electronic devices, but also the prediction and identification of new promising device materials and structures.

Selected publications

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Journals

  • Haidar, E., de Sterke, C., Eggleton, B. (2017). Analysis of the modification of four-wave mixing phase matching by stimulated Brillouin scattering. Journal of the Optical Society of America B: Optical Physics, 34(3), 516-526. [More Information]

2017

  • Haidar, E., de Sterke, C., Eggleton, B. (2017). Analysis of the modification of four-wave mixing phase matching by stimulated Brillouin scattering. Journal of the Optical Society of America B: Optical Physics, 34(3), 516-526. [More Information]

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