Pushpendra Singh

Contact Info

Title: Professor
Email: pushpendra.singh@njit.edu
Office: 313 Mech
Phone: 973-596-3326
Dept: Mechanical Engineering
Webpage: http://www-ec.njit.edu/~singhp
About: 

Education

  • University of Minnesota, Ph.D.,1991
  • University of Minnesota, M.S., 1989
  • Indian Institute of Technology (Kanpur), B. Technology, 1985 

Awards and Honors

 

  • Fellow, American Society of Mechanical Engineers
  • Fellow, American Physical Society

Professional Experience

  • Professor (2005-Present) Department of Mechanical Engineering, NJIT
  • Associate Professor (2001-2005) Department of Mechanical Engineering, NJIT
  • Assistant Professor (1996-2001) Department of Mechanical Engineering, NJIT
  • Technical Staff member (1995-1996) Engineering Science and Applications Division, Los Alamos National Laboratory
  • Postdoctoral Research Associate (1991-1995) Department of Chemical Engineering, University of California Santa Barbara

Website

http://www-ec.njit.edu/~singhp
Research: 

Research Interests

 

  • Fluid dynamics, viscoelastic fluids, multiphase and particulate flows, biological fluid mechanics, microfluidics and electrohydrodynamics



Current Research

 

Our research is focused in the following three areas: manipulation of particles adsorbed at fluid-fluid interfaces, development of efficient computational approaches for multiphase fluids, and the fluid dynamics of non-Newtonian fluids. My goal within the broad area of multiphase fluid mechanics is to develop novel theoretical (numerical) and experimental methods for exploring interesting features of dynamics, from both applied and fundamental points of views. We use these methods to study microscale dynamics in multiphase materials, including those containing micro and nano sized droplets and particles, and to understand the role of microscale dynamics in determining the macro (continuum) scale properties of these materials. One of the approaches used is the direct numerical simulation (DNS) approach in which the fundamental governing equations are solved simultaneously for the fluid and the discontinuous phases without the use of models. One of the focuses of our present work is the efficient transport, capture and manipulation of particles suspended in liquids and at liquid-liquid interfaces. We are interested in manipulating both rigid and deformable particles (e.g., biological cells, drops, bubbles, etc.) in microfluidic devices by externally imposed flows and electric fields.
 
Research projects:
 
  1. Capture of small particles and cells in a contactless fashion, and their manipulation, using electric fields
  2. Transport of drops and bubbles in viscoelastic liquids
  3. Techniques for improving the efficiency of electrohydrodynamic filters
  4. Assembly of defect-free monolayers of micron- and nanoparticles
  5. Modeling and direct numerical simulations of the motion of biological cells and their interaction with the endothelial monolayer
Publications: 

Selected Publications

 Selected Publications for the last five years

  • M. Janjua, S. Nudurupati, I. Fischer, P. Singh and N. Aubry, Electric field induced alignment and self-assembly of rods on fluid-fluid interfaces, to appear in Mechanics Research Communications (2009).
  • R. Chabreyrie, D. Vainchtein, N. Aubry, C. Chandre and P. Singh, Tailoring mixing within a translating droplet, to appear in Mechanics Research Communications (2009).
  • C. Verdier, C. Couzon, A. Duperray and P. Singh, Modelling cell interactions under flow, Journal of Mathematical Biology, 58, 235-259 (2009).
  • N. Aubry and P. Singh, Physics underlying controlled self-assembly of micro and nanoparticles at a two-fluid interface using an electric field, Physical Review E, 77, 056302 (2008).
  • R. Chabreyrie, D. Vainchtein, C. Chandre, P. Singh, N. Aubry, Tailored mixing inside a translating droplet, Physical Review E, 77, 036314 (2008). (Also published in Virtual Journal of Nanoscale Science & Technology, Issue of April 7, 2008.)
  • N. Aubry, P. Singh, M. Janjua and S. Nudurupati, Assembly of defect-free particle monolayers with dynamically adjustable lattice spacing, Proceedings of the National Academy of Sciences, 105, 3711-3714 (2008).(Featured in the volume preface “In This Issue”.)
  • S. Nudurupati, M. Janjua, N. Aubry and P. Singh, Manipulation of the particle distribution on the surface of a drop using external electric fields, Electrophoresis, 29(5), 1164-1172 (2008). (Featured on Volume Cover)
  • D. Bresch, T. Colin, E. Grenier, B. Ribba, O. Saut, P. Singh, C. Verdier, Quelques m´ethodes de param`etre d’ordre avec application `a la mod´elisation de processus canc´ereux, ESIAM Proceedings, 18, 163-180 (2007).
  • Q. Jin, C. Verdier, P. Singh,A. Leyrat, R. Chotard-Ghodsnia, N. Aubry, A. Duperray.Composite drop models for Rolling and deformation of circulating cells adhering to a wall under flow, Mechanics Research Communications, 34, 411-422 (2007).
  • S.B. Pillaipakkam, P. Singh, D. Blackmore and N. Aubry, Transient and steady state motion of a bubble rising in a viscoelastic fluid, J. of Fluid Mech. 589, 215-252 (2007).
  • P. Singh and N. Aubry, Dielectrophoresis and deformation of droplets in micro devices, Electrophoresis, 28, 644–657 (2007). (Featured on Volume Cover)
  • J. Batton, A.J. Kadaksham, A. Nzihou, P. Singh and N. Aubry, Trapping heavy metals by using calcium hydroxyapatite and dielectrophoresis, Journal of Hazardous Materials, 139, 461-466 (2007).
  • S. Nudurupati, N. Aubry and P. Singh, Electrohydrodynamics of yeast cells in traveling electric fields, Journal of Physics: Applied Physics, 39, 3425—3439 (2006).
  • N. Aubry and P. Singh, Control of Electrostatic Particle-Particle Interactions in Dielectrophoresis, Euro Physics Letters, 74, 623–629 (2006).
  • Ben-Abdallah, P, Ni, B., Ould El Moctar, A., Aubry, N. and Singh, P., Tunneling control of neutral particles in suspension in nanofluidic flow, Journal of Applied Physics, 99(9), 094303-1:094303-5 (2006). (Also published in May 29, 2006 issue of Virtual Journal of Nanoscale Science & Technology.)
  • N. Aubry and P. Singh, Influence of particle-particle interactions and particles rotational motion in traveling wave dielectrophoresis, Electrophoresis, 27, 703-715 (2006).
  • J. Kadaksham, P. Singh and N. Aubry, Manipulation of Particles Using Dielectrophoresis, Mechanics Research Communications, 33, 108-122 (2006).
  • J. Kadaksham, P. Singh and N. Aubry, Dielectrophoresis induced clustering regimes of viable yeast cells, Electrophoresis, 26, 3738–3744 (2005).(Republished in Microfluidic Applications in Biology, eds. Niels Lion, Joel Rossier and Hubert Girault, Wiley, 2006.)
  • J. Kadaksham, S.B. Pillaipakkam andP. Singh, Permeability of periodic arrays, Mechanics Research Communications, 32, 659-665 (2005).
  • P. Singh and N. Aubry, Trapping Force on a Finite Sized Particle in a Dielectrophoretic Cage, in Physical Review E, 72, 016602-016607 (2005).
  • P. Singh and D.D. Joseph, Fluid dynamics of Floating particles, J. of Fluid Mech., 530, 31-80 (2005).
  • J. Kadaksham, P. Singh and N. Aubry, Dielectrophoresis of nano particles, Electrophoresis, 25, 3625-3632 (2004).
  • P. Singh and T.I. Hesla, Torque on floating particles, J. Colloid and Interface Science, 280, 542-543 (2004).
  • J. Kadaksham, P. Singh and N. Aubry, Dynamics of pressure driven flows of electrorheological suspensions subjected to spatially non-uniform electric fields, Journal of fluids engineering, 126, 170-179 (2004).
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