Dr. M. A. E. Mahmoud

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Academic Career Length

10Years (2017-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

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16 April 2017 in Sensors

Journal Article

Out-of-Plane Continuous Electrostatic Micro-Power Generators

This paper presents an out-of-plane electrostatic micro-power generator (MPG). Electret-based continuous MPGs with different gaps and masses are fabricated to demonstrate the merits of this topology. Experimental results of the MPG demonstrate output power of 1 mW for a base acceleration amplitude and frequency of 0.08 g and 86 Hz. The MPGs also demonstrate a wideband harvesting bandwidth reaching up to 9 Hz. A free-flight and an impact mode model of electrostatic MPGs are also derived and validated by comparison to experimental results.

18 January 2022 in Sensors

Journal Article

An Electrostatic MEMS Roll-Pitch Rotation Rate Sensor with In-Plane Drive Mode

Ahmed Khaled Sayed Abdelrahim Ibrah

In this paper, we presented a novel electrostatic Roll/Pitch MEMS gyroscope with in-plane drive mode and out-of-plane sense mode. The proposed structure is developed based on a tuning fork gyroscope with decoupled sense mass on each tine that control the sense out-of-plane frequency. A multi-height deep reactive ion etching (DRIE) fabrication process was utilized to achieve and enhance decoupling between the drive and sense modes. We presented our design methodology followed by an analytical and finite element (FEM) model. Our experimental results showed a good match between the analytical model and those obtained experimentally, from the drive and sense oscillation frequencies. Our characterization setup used a custom made application specific integrated circuit (ASIC) for characterization and was able to achieve ARW of 0.2 deg/rt-h, a bias instability 5.5 deg/h, and scale factor non-linearity (SFNL) 156 ppm FS.

About Me

Mohamed A. E. Mahmoud received B.Sc. and M.Sc. degrees in Electrical Engineering from Ain Shams University, Cairo Egypt in 1999 and 2004 respectively. Mr. Mahmoud received his PhD in Electrical Engineering from the University Of Waterloo (UW), Canada in 2010. He joined Si-ware Systems in 2010 as a senior Staff Engineer and worked in different projects until he became a technical Expert in 2020. During this period, Mr. Mahmoud has worked in developing several MEMS design projects including Neospcetra and Neospectra Micro as a portable FT-IR Spectrometer. He also worked in several R&D sensor design projects. Beside his industrial MEMS-design experience, Mr. Mahmoud has been an Assistant Professor in 2011 and then an Associate Professor in Ain Shams University in 2017. During this period, he has taught different MEMS and Electronics Design Courses and supervised several MSc. Students. He has many R&D activities in both electronics and MEMS design and fabrication. Mr. Mahmoud also has more than 20 publications in international Journals and conferences.

Dr. M. A. E. Mahmoud

Dr. M. A. E. Mahmoud

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About Me