Tuesday, May 5, 2026 | 11:00 AM – 12:00 PM Room ME4124, Mackenzie Building | Carleton University
We are pleased to invite all faculty, students, and researchers to a seminar by Dr. Mohamad Moner Al Chawa from TU Dresden, Germany.
Threshold switching devices, such as Ovonic Threshold Switching (OTS) devices, are promising nonlinear nanoscale components for memory selectors, fast switching, and neuromorphic computing. However, accurate device models are often too complex for efficient circuit-level simulations.
This talk presents a compact modeling approach for threshold switching devices that combines circuit-level efficiency with a physically motivated description of the switching process. The model is developed starting from an LTspice macro-model, then extended through a mathematical description and a compact formulation based on an internal state variable. This internal state variable captures the delay associated with threshold switching and enables the model to reproduce the off-state, snapback region, and on-state behavior. The model is validated by fitting experimental current–voltage data from an OTS device manufactured by Western Digital Research.
The talk will also discuss how this type of compact model can support circuit simulations involving nonlinear devices for memory and neuromorphic hardware applications.
Speaker Bio
Mohamad Moner Al Chawa is a researcher in nanoscale device modeling and compact physics-based modeling of nonlinear electronic devices. His work focuses on memristive devices, including ReRAM and Ovonic Threshold Switching devices, as well as sensors and neuromorphic memristive systems. Dr. Al Chawa is connected to the broader memristive and neuromorphic research community through collaborations including with Professor Leon Chua.