University of Twente Student Theses
Room temperature characterization of DopantNetwork Processing Units. And optimization of the measuring process
Snoeijink, L.H. (2021) Room temperature characterization of DopantNetwork Processing Units. And optimization of the measuring process.
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| Abstract: | A Dopant Network Processing Unit (DNPU) allows for parallelism and more efficiency in a Neural Network. DNPUs can show tunable non-linear behavior at 77 Kelvin (K), due to hopping conduction. The thesis will provide an experimental answer to the following research question: "What characteristics of DNPU's at room temperature indicate working devices at 77 Kelvin?", meanwhile improving the measuring process. Measurements will be performed using a probe station to check the IV characteristics of the DNPU, which represents the resistance range. Resistance depends on doping concentration and the reactive ion etching depth. Hopping conduction, needed to achieve tunable non-linearity, is dependent on the doping concentration and thus in relation with the resistance. The results showed that the overall device resistance at room temperature could indicate non-linearity at 77 K. Another outcome is the step by step guide to characterize the DNPU devices, because after experimentation, extra safety features like grounding while wire bonding had to be incorporated. Conclusively, DNPUs can be characterized at room temperature with IV curves and can indicate non-linearity at 77 K. The results showed devices with more non-linear connections at a resistance value around 2 MΩ. |
| Item Type: | Essay (Bachelor) |
| Clients: | University of Twente, Enschede, Netherlands |
| Faculty: | EEMCS: Electrical Engineering, Mathematics and Computer Science |
| Subject: | 30 exact sciences in general, 33 physics, 50 technical science in general, 51 materials science, 53 electrotechnology |
| Programme: | Electrical Engineering BSc (56953) |
| Link to this item: | https://purl.utwente.nl/essays/89064 |
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