Ali Najafi's Research Page

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About me

I work in Institute for Advanced Studies in Basic Sciences as associate professor of physics. I have Ph.D. and M.Sc. of condensed matter physics from Institute for Advanced Studies in Basic Sciences (IASBS) (2004, 1999) and B.Sc. from Sharif University of Technology(1997). My Ph.D. thesis was about forces mediated by non-equilibrium fluctuations and professor R. Golestanian was my supervisor.

The main line of my current research focuses on hydrodynamics and statistical mechanics of soft condensed matter. To see a detail of my scientific interests please see the group page. Part of my time is devoted to referee services for journals. Phys. Rev. Lett., Phys. Rev. E, Euro. Phys. J E and Euro. Phys. Lett. are among the journals that I have collaborated with during last 4 years.

Publications

• M. Doostaran, F. Hajizadeh, A. Najafi, Normal deformation of a soft lipid-based microtube in response to the flow generated by a tangential motion of a nearby microbead, Physics of Fluids, 36, 071704 (2024)[ PDF].

• Forouh Maleki, Ali Najafi, Instabilities in a growing system of active particles: scalar and vectorial systems, Soft Matter, 19, 8157-8163 (2023)[ PDF].

• R. Shirsavar, S Mollaei, M. Rizi, A. Moradi, A. Amjadi, M. Habibi, A. Najafi, Effect of Permittivity on the Electric-Field-Driven Rotation Dynamics in a Liquid Film, Applied Mechanics, 3, 78-87 (2022)[ PDF].

• Ali Najafi and Reza Shirsavar, Theoretical Explanation of rotational flow in the liquid-film motor, Scientific Reports, 11:23063 (2021)[ PDF].

• Shima Nezamipour and Ali Najafi, Flow pumping by external periodic shear applied to a soft wall, Scientific Reports, 11:15041 (2021)[ PDF].

• P. Bayati, M. N. Popescu, W. E. Uspal, S. Dietrich, and A. Najafi, Dynamics near planar walls for various model self-phoretic particles , Soft Matter 15, 5644-5672 (2019)[ PDF].

• P. Bayati, A. Najafi, Electrophoresis of active Janus particles, J. Chem. Phys. 150, 234902 (2019),[ PDF].

• Mehrana R. Nejad, Ali Najafi, Chemotaxis mediated interactions can stabilize the hydrodynamic instabilities in active suspensions , Soft Matter 15, 3248-3255 (2019)[ PDF].

• Z. Fazli, A. Najafi, Long-wavelength instabilities in a suspension of interacting active particles, Journal of Statistical Mechanics: Theory and Experiment 2, 023201 (2018),[ PDF].

• M. Moradi, A. Najafi, Effective viscosity of a two-dimensional suspension of interacting active particles, Phys. Rev. E 96, 022611 (2017)[PDF].

• A. Ghorbani, A. Najafi, Symplectic and antiplectic waves in an array of beating cilia attached to a closed body, Phys. Rev. E 95, 052412 (2017)[PDF].

• H. Behmadi, Z. Fazli, A. Najafi, A 2-D suspension of active agents: the role of fluid mediated interactions, J. Phys.: Condens. Matter 29, 115102 (2017)[PDF].

• H. Mohammadi, B. Esckandariun, A. Najafi A stochastic micro-machine inspired by bacterial chemotaxis, J. Phys.: Condens. Matter 29, 015102 (2017)[PDF].

• P. Bayati, A. Najafi Dynamics of two interacting active Janus particles , J. Chem. Phys. 144, 134901 (2016)[PDF].

• B. Golshaei, A. Najafi Rectified motion in an asymmetric channel, the role of hydrodynamic interactions, Phys. Rev. E 91, 022101 (2015)[PDF].

• M. Moradi, A. Najafi Rheological properties of a dilute suspension of self-propelled particles, Eur. Phys. Lett. 109, 24001 (2015)[PDF].

• P. bayati, L. Ghassab, A. Najafi Entropic forces exerted on a rough wall by a grafted semiflexible polymer, Eur. Phys. J. E 37, 91 (2014)[PDF].

• R. Shiri, A. Najafi, M. Habibi Sampling moire technique and dynamics of a spreading droplet on a solid surface, Meas. Sci. Technol. 25, 035305 (2014)[PDF].

• A. Najafi, S. S. Hoseini-Rad, R. Yusefi, Self-propulsion in a low-Reynolds-number fluid confined by two walls of a microchannel, Phys. Rev. E 88, 045001(2013)[PDF].

• Ali Najafi, Hydrodynamics of low Reynolds swimming, Submitted (2013)[PDF].

• M. Farzin, K. Ronasi and A. najafi, General aspects of hydrodynamic interactions between three-sphere low-Reynolds-number swimmers, Phys. Rev. E 85, 061914(2012)[PDF].

• Kh. Ghamari and A. Najafi, Buckling instability for a charged and fluctuating semiflexible polymer, Modern Phys. Lett. B 25, 2209 (2011)[PDF].

• Ali Najafi, Hydrodynamics of a Micro-Hunter: a Chemotactic Scenario, Phys. Rev. E 83, 060902 (Rapid Communication) (2011)[PDF].

• S. Hosseini-Rad and A. Najafi, Hydrodynamic Interactions of Spherical Particles in A Fluid Confined by A Rough And No-Slip Wall, Phys. Rev. E 82, 036305 (2010)[PDF].

• S. Rashid-Shomali, A. Najafi, Microtubule Dynamics and Oscillating State for Mitotic Spindle, submitted to PRE (2010).

• A. Najafi and R. Zargar, Two-sphere low Reynold's propeller, Phys. Rev. E 81, 067301 (2010)[PDF, VJBIO].

• A. Najafi and R. Golestanian, Coherent Hydrodynamic Coupling for Stochastic Swimmers, Euro. Phys. Lett. 90, 68003 (2010)[PDF].

• A. Najafi and F. Pousaneh, Thermophoresis and the effect of hydrodynamic interactions in a linear model for colloids, J. Mod. Phys. B 25, 4379 (2010)[PDF].

• R. Zargar, A. Najafi and M.F. Miri, Three-sphere low Reynolds number swimmer near a wall, Phys. Rev. E 80, 026308 (2009)[PDF, VJBIO].

• M. Aliee and A. Najafi, Mechanical Properties of an adsorbed elastic polymer in contact with a rigid membrane, Phys. Rev. E 78 051802 (2008)[PDF].

• A. Najafi and R. Golestanian, Propulsion at Low Reynolds Number, Journal of Physics: Condensed Matter, 17 S1203 (2005)[PDF].

• A. Najafi and R. Golestanian, A Simplest Swimmer at Low Reynolds Number: Three Linked Spheres, Phys. Rev. E 69, 062901 (2004)[PDF], Nature, Research Highlight[PDF, Focus, VJBIO].

• A. Najafi and R. Golestanian, Forces Induced by Non-Equilibrium Fluctuations, Euro. Phys. Lett. 68, 776 (2004)[PDF].

• A. Najafi and R. Golestanian, Phonon-Mediated Anomalous Dynamics of Defects, European Physical Journal B 34, 99-103 (2003)[PDF].

• Yu. M. Shukrinov, A. Namiranian and A. Najafi, Modeling of tunneling spectroscopy in HTSC, Low Temp. Phys. 27, 1 (2001)[PDF].