Edmond.Cretu
MiNa Faculty Member
Dr. E. Cretu
Email:Assist. Prof. Edmond Cretu
Telephone: +1 604-827-4115
Email: edmondc 'at' ece 'dot' ubc 'dot' ca
Electrical and Computer Engineering
The University of British Columbia
2332 Main Mall, room 3063
Vancouver, BC V6T 1Z4
Canada
Education
Ph.D. (2003), Delft University of Technology, The Netherlands: "Inertial MEMS devices. Modeling, design and applications"
Research Interests
* MEMS/microsystems (adaptive microsystems, unified modeling and simulation of multi-domain systems), structured design methodologies
* Bio-medical applications of microstructures
* Instrumentation systems, sensors and actuators, adaptive MEMS/NEMS
* Modern methodologies in nonlinear signal processing and analysis of complex systems
* Fractal/constructal theory and chaotic systemsCourses
Group Members:
- Ali Ahmadi, Visiting / Post-Doc student
- Sun Quan, Visiting / Post-Doc student
- Anas Bsoul, Ph.D. student
- Miguel Guillen, Ph.D. student
- Ron Linklater, Ph.D. student
- Elie H. Sarraf, Ph.D. student
- Mrigank Sharma, Ph.D. student
- Dansik Yoo, Ph.D. student
- Wei You, Ph.D. student
- Hussein Al-Chami, M.A.Sc. student
- Hussein Al-Chami, M.A.Sc. student
- Akila Kannan, M.A.Sc. student
- Hadi Najar, M.A.Sc. student
- Kourosh Parsa, B.A.Sc. student
- Shabnam Parsa, B.A.Sc. student
Alumni:
Research Projects
Design, Modeling and Integration of High Sensitive Accelerometers with Adaptive and Non-Linear Control Targeted on FPGA The countless number of applications urged a demand for high performance micro-accelerometers, which in turn continue to gain momentum. Within that framework, one must justify the need for an approach defined by a system level performance in closed loop integration, by understanding the current performance limitations in the state-of-the-art micro-accelerometers, in research, on the market, and when employed with other electrical components. 
O-MEMS accelerometer/gyroscope This project proposes to fabricate Optical Micro-Electro-Mechanical Systems (O-MEMS)for optical acceleration measurements. These would allow for more sensitive, accurate, and reliable measurements, exploiting advantages such as the linear relation between the velocity and the Doppler frequency shift, and the high, wavelength-dependent resolution levels achievable. 
Ultrasound imaging using CMUT CMUT arrays promise a new generation of ultrasound imaging systems, with applications in 3D and 4D (real-time 3D) non-invasive imaging or high-frequency imaging (ultrasound biomicroscopy). The project targets the development of a portable CMUT-based ultrasound imaging system, to be used for breast cancer detection and monitoring. 
Micromirror array for adaptive optics The objective of this project is to build an adaptive micro-optical systems using a 2D micromirror array adaptively controlled through digital signal processing algorithms implemented in reconfigurable hardware (FPGA) 
Journal Publications
(Table View)In Press"Analytical Modeling of CMUTs in Coupled Electro-mechano-acoustic Domains Using Plate Vibration Theory", IEEE Sensors Journal, 2011. Tagged XML BibTex"Tiltable Ultrasonic Transducers: concept, beamforming methods and simulation", IEEE Sensors Journal, 2011. Tagged XML BibTex2013"ULTRASENSITIVE RESONANT MEMS TRANSDUCERS WITH TUNABLE COUPLING", The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 16/6/2013. Tagged XML BibTex2012"FPGA based novel adaptive scheme using PN sequences for self calibration and self testing of MEMS based inertial sensors", Journal of Electronic Testing: Theory and Applications (JETTA), vol. 28, issue 5, pp. 599-614, October 2012. Tagged XML BibTex"Parametric resonance: Amplification and Damping in MEMS gyroscopes", Sensors and Actuators , Physical A: Elsiever, 18/08/2011. Abstract Tagged XML BibTex"Direction of arrival (DOA) estimation using asymmetric mode frequency components of CMUTs", IEEE Ultrasonics Symposium, 10/2012. Tagged XML BibTex"Ring Resonator Optical Gyroscopes - Parameter Optimization and Robustness Analysis", Journal of Lightwave Technology, vol. 30, issue 12: IEEE-OSA, pp. 1802-1817, 06/2012. Abstract Tagged XML BibTex"Novel band-pass sliding mode control for driving MEMS-based resonators", Sensors and Actuators A: Physical, 01/2012. Abstract Tagged XML BibTex2011"A Novel Dynamic Pullin MEMS gyroscope", 25th Eurosensors 2011, 4/9/2011. Tagged XML BibTex"Novel Adaptive Sliding Model Control for MEMS-based High Sensitive Resonators", 25th Eurosensors 2011, Athens, Greece, 4/9/2011. Tagged XML BibTex"Parametric amplification/damping in MEMS gyroscopes", IEEE MEMS, Cancun, Mexico, 23/1/2011. Tagged XML BibTex"Novel Adaptive FPGA-based Self-Calibration and Self-Testing Scheme with PN Sequences for MEMS-based Inertial Sensors", Mixed-Signals, Sensors, and Systems Test Workshop, IEEE 14th International, pp. 120-126, 2011 IEEE 17th International Mixed-Signals, Sensors and Systems Test Workshop, 2011 , Santa Barbara, California, USA, 16/5/2011. Abstract Tagged XML BibTex"Ring Resonator Gyroscope: System Level Analysis and Parameter Optimization", Canadian Semiconductor Science and Technology Conference, Vancouver, B.C., Canada., pp. MPA1, 15/08/2011. Abstract Tagged XML BibTex"Design and Implementation of a Novel Sliding Mode Sensing Architecture for Capacitive MEMS Accelerometers", Journal of Micromechanics and Microengineering, 11/2011. Tagged XML BibTex"Improving CMUT Receiving Sensitivity Using Parametric Amplification", IEEE International Ultrasonics Symposium, 10/2011. Tagged XML BibTex"Tiltable Ultrasonic Transducers: concept, beamforming methods and simulation", IEEE Sensor Journal, vol. 11, issue 10, pp. 2286-2300, 10/2011. Tagged XML BibTex20102008"Noise-based Optimisation and Noise analysis for Resonant MEMS structures ", DTIP 2008 ( Symposium on Design, Test, Integration and Packaging of MEMS/MOEMS, Nice, France, http://documents.irevues.inist.fr/bitstream/2042/16865/1/dtip08085.pdf, 9-11/Apr/2008. Abstract Tagged XML BibTex" Frequency Dependent Noise Analysis and Damping in MEMS", Journal of Microsystem Technology: Springer Verlag, 12/2008. Abstract Tagged XML BibTex"Optical Readout for In-Plane Micro Displacements", Pacific Northwest Microsystems and Nanotechnology Meeting (PANOMINO), University of Washington Friday Harbor Labs, Friday Harbor, WA, USA, 09/2008. Tagged XML BibTex2007"Capacitive MEMS accelerometers testing mechanism for auto-calibration and long-term diagnostics", 13th International Mixed Signals Testing Workshop and 3rd International GHz/Gbps Test Workshop, Povoa de Varzim, Portugal, pp. 171-175, June 18-20, 2007. Tagged XML BibTex"Full-gap positioning of parallel-plate electrostatic MEMS using on-off control", IEEE Int. Symposium on Industrial Electronics (ISIE2007), Vigo, Spain, IEEE, pp. 1464-1468, 4-7/Jun/2007. Tagged XML BibTex"A Differential Mass Component for Signal Processing Using MEMS", IEEE Canadian Conf. on Electrical and Computer Engineering, 2007. CCECE 2007. Canadian Conference on, Vancouver, BC, Canada, pp. 149-152, 22-26/Apr/2007. Tagged XML BibTex"A test mechanism for device diagnostics and process characterisation", 12th Conference on Design of Circuits and Integrated Circuits, Sevilla, Spain, pp. 597-602, 21-23/Nov/2007. Tagged XML BibTex"A feedback operated tunable accelerometer: analysis and design", 18th MicroMechanics Europe, Guimaraes, Portugal, pp. 405-408, 16-18/Sep/2007. Tagged XML BibTex"Accurate read-out calibration of an SOI capacitive transducer using the pull-in voltage", 18th MicroMechanics Europe, Guimaraes, Portugal, pp. 355-358, 16-18/Sep/2007. Tagged XML BibTex"Noise-based optimization and noise analysis for resonant MEMS structures", 12th Annual Meeting PCAMM 2007, Vancouver, BC, Canada, 01/Dec/2007. Abstract Tagged XML BibTex2006"Experimental verification of rarefied gas squeezed-film damping models used in MEMS", Proceedings of IMECE 2006, 2006 ASME International Mechanical Engineering Congress and Exposition, Nov. 5-10, Chicago, USA, Chicago, Illinois, USA, ASME, November 5-10. Abstract Tagged XML BibTex"On-off control for full-gap positioning of parallel-plate electrostatic MEMS", Proceedings of IMECE 2006, 2006 ASME International Mechanical Engineering Congress and Exposition, Nov. 5-10, Chicago, USA, Chicago, Illinois, USA, ASME, November 5-10. Abstract Tagged XML BibTex"A digitally controlled MEMS gyroscope with unconstrained sigma-delta force-feedback architecture", Proceedings of the 19th IEEE International Conference on Micro Electro Mechanical Systems (MEMS 2006), jan. 22-26, Istanbul, Turkey, Istanbul, Turkey, IEEE, January 22-26. Tagged XML BibTex"Using dynamic voltage drive in a parallel-plate electrostatic actuator for full-gap travel range and positioning", (IEEE) Journal of Microelectromechanical Systems, vol. 15, no. 1, pp. 69-83, February. Abstract Tagged XML BibTex2005"MEMS-based Mechanical Spectrum Analyzer", (IEEE) Transactions on Instrumentation and Measurement, June. Tagged XML BibTex"Measuring and interpreting the mechanical-thermal noise spectrum in a MEMS", (IOP) Journal of Micromechanics and Microengineering, vol. 15, no. 7, pp. S30-S38, July. Abstract Tagged XML BibTex"Pre-distorted sinewave-driven parallel-plate electrostatic actuator for harmonic displacement", (IOP) Journal of Micromechanics and Microengineering, vol. 15, no. 7, pp. S103-S108, July. Tagged XML BibTex2004"Harmonic displacement of a parallel-plate electrostatic actuator using a pre-distorted sinewave oscillator", MME_04, Micromechanics Europe Workshop, Proceedings of, September 5-7, 2004, Leuven, Belgium, Leuven, Belgium, pp. pp. 53-56, September 5-7. Tagged XML BibTex"Mechanical-thermal and 1/f Noise in MEMS Devices", MME_04, Micromechanics Europe Workshop, Proceedings of, September 5-7, 2004, Leuven, Belgium, Leuven, Belgium, pp. pp. 100-103, September 5-7. Tagged XML BibTex"Quadrature oscillator with pre-distorted waveforms for application in MEMS-based mechanical spectrum analyser", ESSCIRC 2004, Proceeding of the 30th European Solid-State Circuits Conference, Leuven, Belgium, 21-23 September 2004, pp. 407-410, September 21-23. Abstract Tagged XML BibTex"Compensation of temperature effects on the pull-in voltage of microstructures", Sensors and Actuators A, vol. 115 (The 1, no. 2-3, pp. 351-356, September 21. Abstract Tagged XML BibTex"Behavioural analysis of the pull-in dynamic transition", (IOP) Journal of Micromechanics and Microengineering, vol. 14, no. 9, pp. S37-S42, August. Abstract Tagged XML BibTex"Full characterisation of pull-in in single-sided clamped beams", Sensors and Actuators A: Physical, vol. Volume 110, no. Issues 1-3, pp. 301-309, 1 February. Abstract Tagged XML BibTex"Analysis and analytical modeling of static pull-In with application to MEMS-based voltage reference and process monitoring", (IEEE) Journal of Microelectromechanical Systems, no. 2, pp. 342 - 354, 04/2004. Abstract Tagged XML BibTex2003"Displacement Model for Dynamic Pull-In Analysis and Application in Large-Stroke Electrostatic Actuators", Eurosensors XVII, 17th European Conference on Solid-State Transducers, 20-21 September 2003, Guimar{\~a}es, Portugal, Guimar{\~a}es, Portugal, September 20-21. Tagged XML BibTex"Electro-Mechanical Compensation of the Temperature Coefficient of the Pull-In Voltage of Microstructures", Eurosensors XVII, 17th European Conference on Solid-State Transducers, 20-21 September 2003, Guimar{\~a}es, Portugal, Guimar{\~a}es, Portugal, September 20-21. Tagged XML BibTex"Dynamics of pull-in: analysis of the meta-stable regime", MME_03, The 14th MicroMechanics Europe Workshop, 2-4 November 2003, Delft, The Netherlands, Delft, The Netherlands, November 2-4. Tagged XML BibTex"Mechanical spectrum analyzer in silicon using micromachined accelerometers with time-varying electrostatic feedback", Instrumentation and Measurement Technology Conference, 2003. IMTC '03. Proceedings of the 20th IEEE ,20-22 May 2003, Vail, Colorado, USA, IEEE, pp. 1197 - 1201, May 20-22. Abstract Tagged XML BibTex"Electro-mechanical feedback for realization of a mechanical spectrum analyzer", TRANSDUCERS, Solid-State Sensors, Actuators and Microsystems, 12th Innational Conference on, 8-12 June 2003, Boston, USA, Boston, MA, USA, pp. 1407 - 1410, June 8-12. Abstract Tagged XML BibTex"Stability of a micromechanical pull-in voltage reference", (IEEE) Transactions on Instrumentation and Measurement, vol. 52, no. 3, pp. 457-460, April. Abstract Tagged XML BibTex2002"Hysteresis in the Pull-in of Microstructures", Proceedings of MME'02 (Micromechanics Europe), October 6-8, 2002, Sinaia, Romania, Sinaia, Romania, October 6-8. Tagged XML BibTex"The pull-in of symmetrically and asymmetrically driven microstructures and the use in DC voltage references", Instrumentation and Measurement Technology Conference, 2002. IMTC/2002. Proceedings of the 19th IEEE ,Volume: 1 , 21-23 May 2002, Anchorage, Alaska, USA, pp. 759-764, May 21-23. Abstract Tagged XML BibTex"Stability of Silicon microfabricated pull-in voltage references", Proc. of CPEM 2002, IEEE Conf. on Precision Electromagnetic Measurements, Ottawa, Canada, June 16-21. Tagged XML BibTex2001"Design of a Pull-in Voltage Reference Structure", Proc. of MME_2001 (Micromechanics Europe), Cork, Ireland, Sept. 16-18. Tagged XML BibTex"Using the Pull-in voltage as voltage reference", Proc. of Transducers_2001/Eurosensors XV, pp. 678-680, June 10-14. Tagged XML BibTex"Micromechanical voltage reference using the pull-in of a beam", (IEEE) Transactions on Instrumentation and Measurement, vol. 50, no. 6, pp. 1504-1507, Dec.. Abstract Tagged XML BibTex2000"Modelling of integrated polySiGe Peltier elements", Proc. of the 6th Therminic Workshop, Budapest, Hungary, Sept. 24-27. Tagged XML BibTex"Modelling of Integrated Peltier Elements", Proc. of MSM2000 (Modeling and Simulation of Microsystems), San Diego, USA, March 27-29. Tagged XML BibTex"Intelligent sensors in silicon - an industrial perspective", Proc. of Microtechnology in Metrology and Metrology in Microsystems 2000, Delft, The Netherlands, pp. 59-68, 31 Aug-1 Sept 20. Tagged XML BibTex"Spectral analysis through electromechanical coupling", Sensors and Actuators A: Physical, vol. A85, no. Issues 1-3, pp. 23-32, 25 August. Abstract Tagged XML BibTex1999"Spectral Analysis Through Electromechanical Coupling", Proc. of Eurosensors XIII - The 13th European Conf. on Solid-State Transducers, Hague, The Netherlands, pp. 403-404, Sept. 12-15. Tagged XML BibTex"Accelerometer with Electrically Tunable Spectral Sensitivity", Proc. of Transducers '99, Sendai, Japan, pp. 1298-1301, June 7-10. Tagged XML BibTex"Analytical Modelling for Accelerometers with Electrically Tunable Sensitivity", Proc. of the International Conference on Modeling and Simulation of Microsystems - MSM'99, San Juan, Puerto Rico, USA, pp. 601-604, 19-21 April. Tagged XML BibTex1998"Bulk-micromachined tuneable Fabry-Perot microinterferometer for the visible spectral range", Proc. Eurosensors XII, Southampton, UK, September 1998, Southampton, UK, September. Tagged XML BibTex"A local bus for multi-chip-module-based microinstrumentation systems", Sensors and Actuators A: Physical, vol. A68, no. 1-3, pp. 460-465, 15 June. Abstract Tagged XML BibTex1997"A Local Bus for MCM-Based Microinstrumentation Systems", Proc. Eurosensors XI, September 21-24, Warsaw, Poland, 1997, Warsaw, Poland, pp. 909-912, September 21-24. Tagged XML BibTex"A Low-Power Low-Voltage Digital Bus Interface for MCM-Based Microsystems", Proc. 23rd European Solid-State Circuits Conference (ESSCIRC '97), September 16-18, Southampton, UK, 1997, Southampton, UK, pp. 116-119, September 16-18. Tagged XML BibTex"Flexible Architecture for Microinstrumentation Systems in Silicon", Proc. of the ProRISC Workshop on Circuits, Systems and Signal Processing 1997, November 27-28, Mierlo, The Netherlands, Mierlo, The Netherlands, pp. 115-120, November 27-28. Tagged XML BibTex"Microinstrumentation System in Silicon for Industrial applications", Workshop Sensortechnologie 1997, 12-13 March, Zeist, The Netherlands, Zeist, The Netherlands, March 12-13. Tagged XML BibTex"A microinstrumentation system for industrial applications", Industrial Electronics, 1997. ISIE '97., Proceedings of the IEEE International Symposium on , Guimar{\~a}es, Portugal, 7-11 July 1997, Guimar{\~a}es, Portugal, pp. 846-850, 1997. Abstract Tagged XML BibTex1995"Investigations of avalanche dynamics in IGBTs, bipolar GTOs and MCTs", Proc. of Telecommunications Energy Conference, 1995. INTELEC '95., 17th International , 29 Oct.-1 Nov. 1995, The Hague, The Netherlands, The Hague, Netherlands, pp. 340 - 345, October. Abstract Tagged XML BibTex"Dynamics in The Critical State: Local and Global Aspects", Fractal in the Natural and Applied Sciences, 3rd Int. Conf., Febr. 1995, Marseille, France, Marseille, France, February. Tagged XML BibTex1994"Algorithm for Discrimination/Classification of Time-Series - Implications for Geophysics", Proc. of the XVIIth Symposium of Applied Geophysics and Earth Physics, Nov. 1994, Bucharest, Romania, Bucharest, Romania, November. Tagged XML BibTex"Distribution Functions in Models Emphasizing Self-organized Criticality", Dynamics Days '94, Proc. of the XIIIth European Conf. on Nonlinear Dynamical Systems in Applied Physics, 14-18 June 1994, Budapest, Hungary, Budapest, Hungary, June 14-18. Tagged XML BibTex"Complex Experimental Setup for The Study of Biological Sensors_", Nonlinear Aspects of Physicochemical Phenomena, Proc. of The IXth Europhysics Summer School on Chemical Physics and The Vth International School on Computational Chemistry, July 4-8, Girona, Catalonia (Spain): Girona, Catalonia (Spain), July 4-8. Tagged XML BibTex"Fractal Analysis Methods for Signal Type Discrimination", Nonlinear Aspects of Physicochemical Phenomena, Proc. of The IXth Europhysics Summer School on Chemical Physics and The Vth International School on Computational Chemistry, July 4-8, Girona, Catalonia (Spain), Girona, Catalonia (Spain), July 4-8. Tagged XML BibTex"Spatial Configuration Dynamics of Models with Self-Organized Criticality", Nonlinear Aspects of Physicochemical Phenomena, Proc. of The IXth Europhysics Summer School on Chemical Physics and The Vth International School on Computational Chemistry, July 4-8, Girona, Catalonia (Spain), Girona, Catalonia (Spain), July 4-8. Tagged XML BibTex"The Smoothing Dimension - a New Fractal Analysis Method", Nonlinear Aspects of Physicochemical Phenomena, Proc. of The IXth Europhysics Summer School on Chemical Physics and The Vth International School on Computational Chemistry, July 4-8, Girona, Catalonia (Spain), Girona, Catalonia(Spain), July 4-8. Tagged XML BibTex1993"Can Chaos Be Controlled?", Proc. of the XVIIth National Symposium on Biotechnology, Sept. 1993, Bucharest, Romania, Bucharest, Romania, September. Tagged XML BibTex"Information, Structure and Complexity in Neural Networks", Proc. of the XVIIth National Symposium on Biotechnology, Sept. 1993, Bucharest, Romania, Bucharest, Romania, September. Tagged XML BibTexMethod, Electrode and Apparatus for Detecting and Measuring the Acupuncture Points, , 1993 . Tagged XML BibTex1992Method, electrode and apparatus for detecting and measuring the acupuncture points, , December. Tagged XML BibTex1991"The dv/dt capability of Power MOSFET and BiMOS devices", Proc. of the Synposium on Materials and Devices for Power Electronics, MADEP, Sept. 2-6, 1991, Firenze,ItalyT, Firenze, Italy, Sept. 2-6. Tagged XML BibTex"The dv/dt Capabiliy of Power MOSFETs and Merged Bipolar-MOS Devices", Revue Roumaine des Sciences Techniques, serie Electrotechnique et Energetique, vol. 4, no. tome 36, 1991 . Tagged XML BibTex1990"The dv/dt effect in power MOS structures: analysis and design", Proc. of the National Conference on Semiconductors, October 10-13, 1990, Sinaia, Romania, Sinaia, Romania, October 10-13. Tagged XML BibTex1988"Recent Applications of Neurobionics", Studies and Researches in Biotechnology, vol. 20: IPB Litography, Bucharest, Romania, pp. 280-289, 1988 . Tagged XML BibTexMiNa Student Member
Hussein Al-Chami
Education
At UBC: 05-2008 - 08-2010Degree pursued
M.A.Sc.Faculty Supervisor(s)
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