Said Al-Sarawi

University of Adelaide, Electrical and Electronic Engineering, Faculty Member

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Papers by Said Al-Sarawi

Fabrication and modeling of Ag/TiO< inf> 2 /ITO memristor

by Omid Kavehei and Said Al-Sarawi

The nanometer scale feature of memristor created a broad range of opportunities for innovative ar... more The nanometer scale feature of memristor created a broad range of opportunities for innovative architectures. The nature of the boundary conditions, the complexity of the ionic transport and tunneling mechanism, and the nanoscale feature of the memristor introduces new challenges in model ing, characterization, and measurements for Memristor-MOS (M 2 ) circuits. These new challenges can be addressed by a joint insight from the circuit designer and device engineers, which will dictate the needed modeling and layout rules to attain an accurate estimation of M 2 circuit performance. In this paper, memristive behavior of titanium dioxide (Ti0 2 ) is studied using a novel combination of electrodes, silver (Ag) and indium thin oxide (ITO). Fabrication method and a modeling approach are also explained. The ITO electrode provide (a) an excellent transparency in visible light, (b) improved functional reproducibility, and (c) non-volatile characteristics as well as a promising unique application of the M 2 circuits in sensory applications. Furthermore, proposed modeling approach shows a good agreement between measurements and simulations of analog memory characteristics and reproducibility as well as long-term retention.

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Formulation of a simple distributed-parameter model of multilayer piezoelectric actuators

Journal of Intelligent Material Systems and Structures

A multilayer piezoelectric actuator is a promising linear vibrator. In this article, a simple dis... more A multilayer piezoelectric actuator is a promising linear vibrator. In this article, a simple distributed-parameter analytical model of piezoelectric actuator, which can model vibration characteristics of piezoelectric actuator-based applications, is formulated. Based on the physical analysis of piezoelectric actuator, a simplification is proposed, justified and applied to fundamentals of thickness-extension-mode piezoelectricity. This simplification subtly enables piezoelectric actuator to be effectively modelled as a whole and allows for a formulation of a simple analytical model. Compared with other modelling methods in the literature, the proposed model with a small number of easily accessible parameters is easy to handle and extend with little compromised accuracy. The effectiveness of the proposed model has been validated by a threedimensional finite element analysis model of piezoelectric actuator developed in commercial software ANSYS.

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SAW Parameter Extraction Using Finite Element Analysis The Centre for High Performance Integrated Technologies and Systems (

Surface acoustic wave devices apart from being small, rugged and reliable can also be used as wir... more Surface acoustic wave devices apart from being small, rugged and reliable can also be used as wirelessly interrogatable and completely passive devices in hostile environments. As complex signal processing functions can be performed with a simple structure through the variation of electrode patterns they can power wireless sensors and actuators in a secure manner. It is important to develop exact SAW parameter measurement techniques and simulation methods that are able to model the SAW devices accurately. Contrary to the frequently used FEM/BEM numerical simulation techniques, in this paper a versatile finite element modelling is employed to automatically include the second order effects in the device by considering the complete set of partial differential equations. The eigenmodes and the harmonic admittance of a periodic structure obtained from the FEM simulations are used to extract the COM/P-matrix parameters with the help of a fitting technique. The extracted parameters are compared to the ones in the literature for the same device specifications. Moreover, a SAW transducer is modeled for a specific device length from the extracted parameters.

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Wireless Interrogation of a Micropump and Analysis of Corrugated Micro-diaphragms

Lecture Notes in Electrical Engineering, 2009

ABSTRACT

Application of Project/Problem-Based Learning in Microelectronics

IFIP — The International Federation for Information Processing, 2005

This paper presents an application of problem/project based learning (PBL) to a new course called... more This paper presents an application of problem/project based learning (PBL) to a new course called Analog Microelectronics in the School of Electrical and Electronic Engineering at The University of Adelaide. The course is part of the fourth year programs for B.E. (Computer Systems Engineering) and B.E. (Electrical and Electronic Engineering).

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An automated approach for evaluating spatial correlation in mixed signal designs using synopsys HSpice

Contactless energy transfer for a SAW based implanted microvalve

A Review of 3-D Packaging Technology

by Paul Franzon, Derek Abbott, and Said Al-Sarawi

IEEE Transactions on Components, Packaging …, Jan 1, 1998

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Global sensitivity and uncertainty analysis of SLAMM for the purpose of habitat vulnerability assessment and decision making

by Said Al-Sarawi and Nicolangelo Iannella

World Environmental and Water Resources Congress 2010: Challenges of Change - Proceedings of the World Environmental and Water Resources Congress 2010, 2010

ABSTRACT One of the main aspects of designing and operation prediction of any power system is to ... more ABSTRACT One of the main aspects of designing and operation prediction of any power system is to simulate its Electromagnetic Transient&#39;s (EMT) performance. Among the available power line models, Universal Line Model (ULM) is an efficient and accurate model for this purpose. There are random system parameters which affect the quantities of EMT output qualities. This paper presents a novel global sensitivity and uncertainty analysis techniques to determine the effect of these uncertain factors on the variation of the EMT outputs.

Compact Dual-Mode Wideband Filter Based on Complementary Split-Ring Resonator

by Amir Ebrahimi, Said Al-Sarawi, and Derek Abbott

—This letter proposes a microstrip filter based on a dual-mode complementary split-ring resonator... more —This letter proposes a microstrip filter based on a
dual-mode complementary split-ring resonator (DMCSRR). For
the input/output coupling, a dual C-shaped feed structure is
implemented together with the DMCSRR to acheive a wideband
response. The resonator offers a wide fractional bandwidth of
62% at the central frequency of 2.23 GHz and a very compact
structure with a footprint of , where is the
guided wavelength at the midband frequency. A comprehensive
lumped element circuit analysis accompanies the simulation and
measurement results

$Fig. 6. Simulation results of parameter variation affect on fractional bandwidth and transmission zeros: (a) Filter performance versus d. (b) Performance versus g. (c) Performance versus g;.$

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