Said F. Al-Sarawi

Learn More
Triplet-based Spike Timing Dependent Plasticity (TSTDP) is a powerful synaptic plasticity rule that acts beyond conventional pair-based STDP (PSTDP). Here, the TSTDP is capable of reproducing the outcomes from a variety of biological experiments, while the PSTDP rule fails to reproduce them. Additionally, it has been shown that the behaviour inherent to the(More)
| The nonvolatile memory property of a memristor enables the realization of new methods for a variety of computational engines ranging from innovative memristive-based neuromorphic circuitry through to advanced memory applications. The nanometer-scale feature of the device creates a new opportunity for realization of innovative circuits that in some cases(More)
As conventional memory technologies are challenged by their technological physical limits, emerging technologies driven by novel materials are becoming an attractive option for future memory architectures. Among these technologies, Resistive Memories (ReRAM) created new possibilities because of their nano-features and unique I-V characteristics. One(More)
Physical unclonable functions (PUFs) exploit the intrinsic complexity and irreproducibility of physical systems to generate secret information. The advantage is that PUFs have the potential to provide fundamentally higher security than traditional cryptographic methods by preventing the cloning of devices and the extraction of secret keys. Most PUF designs(More)
A model for the delay of neuron-MOS (neuMOS) and Capacitive Threshold-Logic (CTL) based logic circuits is presented for the first time. It is based on the analysis of the basic neuron-MOS [l] and CTL gate structures [a]. A closed form analytic expression for the delay of the threshold gate is derived. A relation for the delay in terms of an ordinary CMOS(More)
We present new computational building blocks based on memristive devices. These blocks, can be used to implement either supervised or unsupervised learning modules. This is achieved using a crosspoint architecture which is an efficient array implementation for nanoscale two-terminal mem-ristive devices. Based on these blocks and an experimentally verified(More)
Low cost pervasive devices such as RFID (radio-frequency identification) tags and sensor nodes are increasingly becoming part of the fabric of life. Using these pervasive devices to store and collect data securely is becoming a challenge because stringent requirements on power and area constrain the implementation of standard cryptographic mechanisms. In(More)
Phase-Locked Loops (PLLs) are a commonly used module in frequency synthesizers as part of RF transceivers. Simulating these modules is very time consuming. Therefore, a number of approaches to evaluate the performance of these modules through high level behavioural modelling are developed, where the focus is on the random noise aspect of these modules. In(More)