Neuromorphic devices based on oxidation-conversion of van-der-Waals semiconductors

   London Centre for Nanotechnology

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  Dr A Lombardo  No more applications being accepted  Competition Funded PhD Project (Students Worldwide)

About the Project

Why this research is important: Taking inspiration from the human brain, neuromorphic systems uses physics of materials and devices to process unstructured and noisy analogue data, leading to a fundamentally new approach to computing. With tens of materials experimentally available and over 2,000 theoretically predicted, 2D materials are among the most promising material systems to support neuromorphic technology. In particular, the chemical conversion of 2D materials enables synthesis of ultra-thin insulators and atomically-sharp semiconductor-dielectric interfaces by changing composition and phase of an initial material while preserving its shape, leading to a novel approach for precise assembling of nanodevices.

Who you will be working with: The successful candidate will be part of the NanoElectronic Devices Group and work with other postgraduate students and postdoctoral research associates. The group has extensive expertise on 2D materials and dedicated facilities for production/processing (incl. oxidation). She/he will also work with the research groups of Prof. Shulger, Prof. Kenyon and Dr Mehonic, to compare experimental results against theory (and viceversa) and evaluate the performance of 2D-based memristors for applications in cross-bar arrays and machine learning tasks.

What you will be doing: The project will involve systematic investigation of oxidation of hafnium, zirconium and gallium sulphides and selenides, as well as design, microfabrication and testing of memristors based on such oxides. Flakes of different thickness will be obtained from bulk crystals, and different oxidation methods will be investigated. Devices will be fabricated using a combination of standard clean-room based and 2D material-specific microfabrication, already available in the group. Electrical characterization will be performed in a probe station setup coupled with DC, RF and pulsed testing equipment.

Who we are looking for: The successful candidate will have first class honours undergraduate degree and/or post-graduate master’s qualification in electronic engineering, physics, nanotechnology, computer science or closely related disciplines.

Funding available:

This project is part of the UCL EPSRC DTP (Doctoral Training Partnership). All studentships are fully funded for 4 years and provide: 

  • 4 years fees (Home rate) (International students will receive a UCL award to cover the home/international fee difference)
  • Maintenance stipend at the UCL EPSRC DTP enhanced rate
  • Research Training Support Grant (RTSG) of £4,800. This is to cover additional costs of training eg courses, project costs, conferences, travel 

How to Apply:

  • Informal inquiries regarding the project can be made by contacting Dr. Antonio Lombardo
  • Formal applications should be made via UCL's Doctoral School here
  • Please note that the 8 January deadline (1pm) includes the submission of references by that date.

Computer Science (8) Physics (29)
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 About the Project