Praxis Dynamics  >>  About

Praxis Dynamics is a consultancy aiming to utilise scientific expertise to address industrial needs. It provides scientific background surveys, analytical and numerical analysis of physical systems, and modelling and simulation services to industrial projects that involve complex, novel, or cross-domain systems and devices.

Praxis Dynamics specializes in all stages of research and development (R&D) of new micro/nano systems and technologies. The initial step usually includes an in-depth survey of the existing knowledge in all the relevant fields of industrial and academic research and IP. Based on a thorough understanding of the scientific ideas behind the new system, and its scientific and commercial context, a comprehensive physical model is formulated and analysed. This model facilitates quantitative evaluation of the novel capabilities and provides a clear definition of the engineering design space. Finally, elaborate analytical and numerical analysis of the full physical model, including stability, nonlinear effects, and interactions across different physical domains, is provided. The results are used to create a manageable and computationally feasible simulation model (SPICE, Matlab, etc.) that can be utilised by the customer's engineers, designers, and quality control during the product development and testing.

As a potential client, collaboration with Praxis Dynamics will allow you to tap into any and all of these areas of expertise.

Praxis Dynamics is committed to quality in all professional services it provides, and adheres to a reliable delivery schedule, even in more open-ended, research focused tasks.

The founder of Praxis Dynamics, Dr. Stav Zaitsev, received his BSc in Electrical Engineering and BA in Physics (both Summa Cum Laude) in 2003 from the Technion - Israel Institute of Technology, and his PhD in Electrical Engineering from the same university in 2011. His graduate studies were mainly focused in the field of micro-opto-electromechanical systems (MOEMS).

Dr. Zaitsev is specialising in nonlinear analysis and modelling of microsystems and semiconductor devices. He combines extensive knowledge of microelectromechanical systems (MEMS) design with a broad background in physics, significant experience in analogue design, and special attraction to nonlinear systems. His professional interests include analysis and modelling of complex nonlinear systems, design of microsystems, analogue electronics, mesoscale physics, and quantum electronics.

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List of Publications:

S. Zaitsev, O. Gottlieb, and E. Buks, “Nonlinear dynamics of a microelectromechanical mirror in an optical resonance cavity”, Nonlinear Dynamics 69, 1589-1610, 2012
S. Zaitsev, O. Shtempluck, and E. Buks, “Effects of electron beam induced carbon deposition on the mechanical properties of a micromechanical oscillator”, Sensors and Actuators A 179, 237-241, 2012
S. Zaitsev, O. Shtempluck, O. Gottlieb, and E. Buks, “Nonlinear damping in a micromechanical oscillator”, Nonlinear Dynamics 67, 859-883, 2012
S. Zaitsev, A. K. Pandey, O. Shtempluck, and E. Buks, “Forced and self-excited oscillations of an optomechanical cavity”, Physical Review E 84, 046605, 2011
S. Zaitsev, A. K. Pandey, O. Shtempluck, and E. Buks, “Thermal effects in an optomechanical cavity”, in The 56th Annual Meeting of the Israel Physical Society (IPS), 2010, Tel Aviv, Israel, Dec 2010
S. Zaitsev and E. Buks, “Nonlinear damping in nanomechanical beam oscillator”, in 5th EUROMECH Nonlinear Oscillations Conference, Eindhoven, The Netherlands, Aug 2005
S. Zaitsev, R. Almog, O. Shtempluck, and E. Buks, “Nonlinear dynamics in micromechanical oscillators”, Proceedings of IEEE International Conference on MEMS, NANO, and Smart Systems, Banff, Alberta – Canada, Jul 2005
E. Buks, E. Arbel-Segev, S. Zaitsev, B. Abdo, and M. P. Blencowe, “Quantum Nondemolition Measurement of discrete Fock States of a nanomechanical resonator”, Europhysics Letters 81, 10001, 2008
E. Buks, S. Zaitsev, E. Segev, B. Abdo, and M. P. Blencowe, “Displacement detection with a vibrating RF SQUID: Beating the Standard Linear Limit”, Physical Review E 76, 026217, 2007
R. Almog, S. Zaitsev, O. Shtempluck, and E. Buks, “Signal amplification in a nanomechanical Duffing resonator via stochastic resonance”, Applied Physics Letters 90, 013508, 2007
R. Almog, S. Zaitsev, O. Shtempluck, and E. Buks, “Noise squeezing in a nanomechanical Duffing resonator”, Physical Review Letters 98, 078103, 2007
R. Almog, S. Zaitsev, O. Shtempluck, and E. Buks, “High intermodulation gain in a micromechanical Duffing resonator”, Applied Physics Letters 88, 213509, 2006
I. Baskin, S. Zaitsev, D. Lipson, R. Gilad, K. Keren, G. Ben-Yoseph, and U. Sivan, “Molecular shift register and its utilization as an autonomous DNA synthesizer”, Physical Review Letters 97, 208103, 2006
T. Danovich, S. Mazin, and S. Zaitsev, “Resistance Accuracy Analysis of RC Extraction Tool: a Comprehensive Study”, Intel Design and Test Technology Conference, 2004

PhD Thesis:

PDF S. Zaitsev, “Forced and Self-Excited Oscillations in Nonlinear Micromechanical Resonators”,
Department of Electrical Engineering, Technion - Israel Institute of Technology, 2011


S. Zaitsev, O. Shtempluck, and E. Buks, “Changing the properties of mechanical resonators by the means of electron beam induced deposition”, USA Provisional Patent no. 61/479,964, Apr 2011