Faculty Profile  

Yogesh M. Joshi
Associate Professor


B.E. University of Pune, 1996
Ph.D. IIT-Bombay, Mumbai; National Chemical Laboratory, Pune 2001
Post Doctoral Research, Benjamin Levich Institute for Physico-Chemical Hydrodynamics, New York, 2001-2004

Phone(office): 91-512-2597993   Fax: 91-512-2590104
email: joshi[AT]iitk.ac.in

 

Group Home Page http://home.iitk.ac.in/~joshi

Research Interests
  • Structure and dynamics of Colloidal Glasses and Gels
  • Soft Matter
  • Rheology of Complex Fluids
  • Polymer Science and Engineering, Polymer Nanocomposites

Brief Overview

Our group is interested in understanding physical behavior and dynamics of structured fluids. We combine expertise from Chemical Engineering, Physics, Chemistry and Materials Science to understand molecular phenomena that is responsible for the flow behavior. Major thrust area of our group is to understand ageing and effect of deformation on the variety of soft glassy materials such as concentrated suspensions, glassy polymers and polymer nanocomposites. Common theme in all these systems is their jammed state wherein primary entity (particle or molecular segment) is physically arrested due to overall crowding of constituents. In such state, system explores only a small part of the phase space thereby leading to a glassy behavior. Recently we showed that how rheological characterization can give profound insight into the ageing of colloidal glasses compared to that of colloidal gels. We also investigated effect of deformation on the ageing suspensions and how influence of the same on relaxation dynamics can be used to predict long time rheological behavior of these materials. We are also involved in understanding rheological behavior of discotic nematic suspensions, particularly their intriguing flow behaviors that are industrially very important.

Honours and Awards

  • Department of Atomic Energy – Science Research Council (DAE – SRC) Outstanding Investigator Award (2012).

    •  Elected life member of National Academy of Sciences (NASI) (2010)

  • Distinguished Alumnus award of Maharashtra Institute of Technology Pune (2010)

  • Indian Institute of Chemical Engineers (IIChE) Amar Dye Chem Award (2009)

  • P. K. Kelkar faculty Research Fellowship (Sponsored by batch of 1979)

  • Indian National Academy Engineering (INAE) Young Engineer Award (2008)

  • National Academy of Sciences (NASI) Young Scientist Platinum Jubilee Award (2008)

  • Indian Institute of Chemical Engineers (IIChE) Diamond Jubilee Young Achiever Award (2007)

  • Associate of Indian Academy of Sciences (2006-2009)

  • Indian National Science Academy (INSA) Medal for Young Scientist (2006)

  • Department of Atomic Energy BRNS Young Scientist Research Award (2006)

    

Recent Publications

  1. Shahin A., Joshi Y. M., Cates M. E. "Delayed solidification of soft glasses: New experiments, and a theoretical challenge", Faraday Discussion, DOI: 10.1039/C2FD20005H (2012). download

  2. Shahin A., Joshi Y. M. "Hyper-aging Dynamics of Nano-clay Suspension", Langmuir, 28 (13), 5826 - 5833,(2012). download

  3. Gupta R., Baldewa B. and Joshi Y. M., "Time Temperature Superposition in Soft Glassy Materials", Soft Matter, in press (2012).  download

  4. Baldewa B. and Joshi Y. M., "Delayed Yielding in Creep, Time -Stress Superposition and Effective Time Theory for a Soft Glass", Soft Matter, 8, 789 - 796. (2012). download

  5. Shaukat A.,Sharma A. and Joshi Y. M., "Squeeze flow behavior of (soft glassy) thixotropic material" Journal of Non-Newtonian Fluid Mechanics, 167, 9 - 17 (2012). download

  6. Shahin A., Joshi Y. M., Ramakrishna, S. Anantha. "Interface Induced Anisotropy and nematic glass/gel state in Jammed Aqueous Laponite Suspensions", Langmuir, 27, 14045 --14052 (2011). download

  7. Kaushal M. and Joshi Y. M., "Self-Similarity in Electrorheological Behavior", Soft Matter, 7, 9051 - 9060 (2011). download

  8. Baldewa B. and Joshi Y. M., " Thixotropy and Physical Aging in Acrylic Emulsion Paint ",, Polymer Engineering & Science, 51, 2084--2091 (2011). download

  9. Shahin A. and Joshi Y. M.,  " Prediction of long and short time rheological behavior in soft glassy materials," Physical Review Letters, (106) 038302 (2011). download

  10. Shaukat A., Sharma A. and Joshi Y. M., " Time-aging time-stress superposition in soft glass under tensile deformation field ", Rheologica Acta 49,1093–1101 (2010). download

  11. Shahin A. and Joshi Y. M., " Irreversible Aging Dynamics and Generic Phase Behavior of Aqueous Suspensions of Laponite ", Langmuir 26, 4219-4225 (2010). download

  12. Bandyopadhyay R., Mohan H. P. and Joshi Y. M., Stress Relaxation in Aging Soft Colloidal Glasses, Soft Matter, 6, 1462- 1466 (2010). [Download]

     

     

     

    13.  

    Complete List of Publication

    Complete Resume (PDF format)

    Che613: The Structure and Rheology of Complex Fluids

    Courses Taught/a>

     
 
 

 

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