Publications

1. Catherine Tom, Erwan Paineau, and Ravi Kumar Pujala*, Investigating the phase behaviour of binary suspensions of cellulose nanocrystals and montmorillonite with nonlinear rheology, SAXS and polarized optical microscopy.  Colloids and Surfaces A: Physicochemical and Engineering Aspects  (2023, in press)

2. S. Archana,   V. S. Devika,   Prasanna More, Ravi Kumar Pujala and Surajit Dhara, Electrophoretic propulsion of matchstick-shaped magnetodielectric particles in the presence of external magnetic fields in a nematic liquid crystal. Soft Matter (2023, in press).

3. Surya Narayana Sangitra, and Ravi Kumar Pujala*, Effect of small amounts of akaganeite (β-FeOOH) nanorods on gelation, phase behaviour and injectability of thermoresponsive Pluronic F127. Soft Matter (2023).  https://doi.org/10.1039/D3SM00451A (COVER PAGE ARTICLE)

4. Catherine Tom, Surya Narayana Sangitra, and Ravi Kumar Pujala*, "Rheological fingerprinting and applications of cellulose nanocrystal based composites: A review", Journal of Molecular Liquids 370, 121011 (2023).

5. P More, SN Sangitra, HB B, Ravi Kumar Pujala*, “Rheology and microstructure of thermoresponsive composite gels of hematite pseudocubes and Pluronic F127”, The Journal of Chemical Physics 157, 214902 (2022).

6. Kumbam Lingeshwar Reddy,   Jikson P Mathew,   Sonia Maniappan,   Catherine Tom,   Elizabeth Shiby,   Ravi Kumar Pujala  and  Jatish Kumar, "Mandelic Acid Appended Chiral Gels as Efficient Templates for Multicolour Circularly Polarized Luminescence", Nanoscale 14, 4946-4956 (2022). [Cover page article]

7. Mahesh Kumar Yadav, Surya Narayana Sangitra, Neeraj Panwar, Tripti Rimza, Ravi Kumar Pujala* and Pradip Kumar, "Aspect ratio dependent viscoelastic properties of graphene oxide liquid crystals", Materials Chemistry and Physics 287, 126305 (2022).

8. Catherine Tom, Shubham Sinha, Nidhi Joshi, Ravi Kumar Pujala*, "Tuning Aerogel Properties for Aerospace Applications", Aerospace polymeric materials (pp. 1-28). Wiley - Scrivener Publishing LLC. DOI: 10.1002/9781119905264.ch1 (2022).

9. M. Muhammed Rasi,   S. Archana,   Ravi Kumar Pujala  and  Surajit Dhara, "Nontrivial electrophoresis of silica micro and nanorods in a nematic liquid crystal", Soft Matter  (in press, 2022).

10. Devika V S, Dinesh Kumar Sahu, Ravi Kumar Pujala, Surajit Dhara, "Defect-polymorphism controlled electrophoretic propulsion of anisometric microparticles in a nematic liquid crystal", Physical Review Applied  18, 014030 (2022).

11. Muhammed Rasi M, Ravi Kumar Pujala, Surajit Dhara, "Nontrivial electrophoresis of silica micro and nanorods in a nematic liquid crystal " arXiv: 2204.11195 (2022)

12. Bhushan Thipe and Ravi Kumar Pujala*, "Self-Assembled Membranes and their Applications",  Materials Research Foundations, Vol. 120, pp 151-183 (2022).

13. Catherine Tom, Venkata M S Ganesh Tanuku, Erwan Paineau, Ravi Kumar Pujala*, "Binary Mixtures of Colloidal Cellulose Nanocrystals and Laponite for Preparation of Functional Nanocomposites".  ACS Applied Nano Materials  4 (8), 8586 (2021).

14. Muhammed Rasi M, Ravi Kumar Pujala, Sathyanarayana Paladugu, and Surajit Dhara, "Interactions of charged microrods in chiral nematic liquid crystals".  Phys. Rev. E 104, 014706 (2021).

15. Devika V S, Ravi Kumar Pujala, and Surajit Dhara, "Orientation Dependent Interaction and Self-assembly of Cubic Magnetic Colloids in a Nematic Liquid Crystal", Advanced Optical Materials 8 (7), 1901585 (2020). This article appears in Hot Topic: Magnetic Materials 

16. Nidhi Joshi and Ravi Kumar Pujala*, "Silica Aerogel", Materials Research Foundations, Vol. 84, pp 109-132, 2020. (Part of the book on Aerogels I)

17. Ravi Kumar Pujala*, Devika Venkuzhy Sudhakaran and Surajit Dhara, "Evaporation-driven self-assembly in the mixtures of micro and nanoparticles",    Bulletin of Materials Science  43, 173 (2020). Invited article in the special issue "Soft Materials". (Cover Page article*)

18. Maheshwar Gopu , Sachin Rathod, Uma Namangalam, Ravi Kumar Pujala, Sunil Kumar S, and Dileep Mampallil, "Evaporation of Inclined Drops: Formation of Asymmetric Ring Patterns" Langmuir 36, 8137 (2020).

19. P. Sathyanarayana,   Supreet Kaur,   Golam Mohiuddin,   Ravi Kumar Pujala,   Santanu Pal  and  Surajit Dhara, " Microrheology to Probe Smectic Clusters in Bent-core Nematic Liquid Crystals",  Soft Matter 16, 7556-7561 (2020).                                         

20. Ravi Kumar Pujala* and H.B.Bohidar, "Hierarchical Self-assembly, Spongy Architecture, Liquid Crystalline Behaviour and Phase Diagram of Laponite Nanoplatelets in Alcohol-Water Binary Solvents", Journal of Colloid and Interface Science 554, 731 (2019).

21. P Brown, Ravi Kumar Pujala (as a member of the RELISH Consortium), Y Zhou,  "Large expert-curated database for benchmarking document similarity detection in biomedical literature search"", Database: The Journal of Biological Databases and Curation. ISSN 1758-0463. https://doi.org/10.1093/database/baz085 In Press (2019)

22. Muhammed Rasi M, Ravi Kumar Pujala, and Surajit Dhara, "Colloidal analogues of polymer chains, ribbons and 2D crystals employing orientations and interactions of nano-rods dispersed in a nematic liquid crystal",  Scientific Reports 9, 4652 (2019) (Nature Publishing Group). 

23. Fabian Hagemans*, Ravi Kumar Pujala*, Danisha S. Hotie, Dominique M.E. Thies-Weesie, D. A. Matthijs de Winter, Johannes D. Meeldijk, Alfons van Blaaderen, and Arnout Imhof, "Shaping Silica Rods by Tuning Hydrolysis and Condensation of Silica Precursors"  (* Equal Contribution). Chemistry of Materials 31, 521 (2019).

24. Ravi Kumar Pujala* and H.B. Bohidar, "Slow dynamics and equilibrium gelation in fractionated montmorillonite dispersions", Colloids and Polymer Science, 297, 1053 (2019).

25. Ravi Kumar Pujala*, M. Praveen Kumar, Surajit Dhara*, "Hierarchical self-assembly of colloidal nanoplatelets driven by evaporation"  J.Phys.D: Applied Physics 51 304003 (2018) (Invited article in Special Issue: Driven  Colloids).                                                                 

26. Ravi Kumar Pujala*, C. T. W. M. Schneijdenberg, Alfons van Blaaderen, H.B. Bohidar,  "In-situ Observation of Hierarchical Self-Assembly Driven by Bicontinuous Gelation in Mixed Nanodisc Dispersions"  Scientific Reports, 8, 5589 (2018) (Nature Publishing Group)(* Corresponding Author) (Ranked in Top 100 Scientific Reports papers in 2018)

27. Ravi Kumar Pujala, Artificial Nacre Nanocomposites for Advanced Applications, Nanomedicine and Nanotechnology Journal (2018) (Invited article).

28.  Nidhi Joshi, Ravi Kumar Pujala, H. B. Bohidar, “Ionic liquid driven phase separation in Nanoclay dispersions and the phase diagram”,   Journal of Molecular Liquids 207, 127 (2015). 

29.  Ravi Kumar Pujala, Nidhi Joshi and H. B. Bohidar “Spontaneous evolution of self- assembled phases from anisotropic colloidal   dispersions”, Colloids and Polymer Science 293, 2883 (2015).   

30. Ravi Kumar Pujala and H. B. Bohidar “Slow Dynamics, Hydration and Heterogeneity in Laponite Dispersions”,  Soft Matter 9, 2003  (2013).

31. Ravi Kumar Pujala and H. B. Bohidar “Kinetics of anisotropic ordering in Laponite dispersions induced by a water-  air interface”  Phys. Rev. E  88, 052310(2013).

32. Ravi Kumar Pujala and H. B. Bohidar “Ergodicity breaking and aging dynamics in Laponite- Montmorillonite mixed clay dispersions”  Soft Matter 8, 6120 (2013).

33. Ravi Kumar Pujala, Nisha Pawar and H. B. Bohidar “Unified scaling behaviour of physical properties of clays in alcohol solutions”  Journal of Colloid and Interface Science 364, 311 (2011)

34. Ravi Kumar Pujala, Nisha Pawar and H. B. Bohidar “Landau theory description of    observed isotropic to  anisotropic phase transition  in  mixed clay  gels” Journal of Chemical Physics 134, 194904 (2011).

35. Ravi Kumar Pujala, Nisha Pawar and H. B. Bohidar “Universal sol  state behaviour and gelation kinetics   in mixed clay  dispersions”  Langmuir 27, 5193 (2011).

36. Ravi Kumar Pujala, H. B. Bohidar, “Microstructure and Aging Dynamics of Fluorescent Nanoclay Co-gels of   Laponite and   Montmorillonite”   arXiv:1608.08796 (2016).

Books

1.   Ravi Kumar Pujala, Dispersion Stability, Microstructure and Phase Transition of Anisotropic Nanodiscs,    Springer, Springer Thesis, 2014.   ISBN: 978-3-319-04554-2.

In Preparation

1.  Ravi Kumar Pujala and G. Petekidis, “Shear induced crystallization and yielding behavior of repulsive and attractive glasses”, Preparation.

2. Ravi Kumar Pujala and H. B. Bohidar “Aging, Slow Dynamics and Anisotropic ordering in Nanoclay Dispersions: A Review”.

4. Ravi Kumar Pujala, H. B. Bohidar, “Hardening of gels from the nanoclays and their mixtures”, 2019.

Workshop/Oral/Poster Presentation

 . Oral Presentation "Shear Induced Crystallization and Yielding behavior of Repulsive and Attractive glasses", RK Pujala, Softcomp annual meeting, June 8-12, Ancona, Italy

·         Poster Presentation on “Ergodicity breaking and aging dynamics in mixed nanoclay dispersions” RK Pujala and H. B. Bohidar, Julich Soft Matter Days 2012, Nov 13-16, by Institute of complex systems, Julich, Germany.

·         DST SERC School and Symposium on “Rheology of Complex fluids 2012” by IIT Guwahati, Guwahati, India from January 3-7, 2012.

·         Poster Presentation on “Aging and Slow dynamics in Nanoclay dispersions” RK Pujala and H. B. Bohidar, ICONSAT-2012 from January 20-23, 2012, Hyderabad, India.

·         Poster Presentation on “Aggregation dynamics of Nano clay particles” RK Pujala and H. B. Bohidar, Indo-US Bilateral Workshop on Nanoparticle Assembly: From Fundamentals to Applications from 12-14 December 2011 organized by IIT Delhi, Delhi, India.

·         Oral and Poster Presentations on “Aging transitions in anisotropic colloids” RK Pujala and H. B. Bohidar, Conference and School on Nucleation, Aggregation and Growth,  July 26 – August 6, 2010, Bengaluru, INDIA.

·         Oral and Poster Presentation on “Phase Behavior of the Nanoclay-Water system” RK Pujala and H. B. Bohidar, National Symposium on Nano science: Theory and Applications, 5-7 November 2009, SES JNU, New Delhi, India

·         Oral presentation on “Slow dynamics and Aging in complex fluids” RK Pujala, 7th Dynamics Day, Delhi, 13 December 2011, JNU, New Delhi, India.

·         DSC/TGA Training course at Perkin Elmer Company from 24th to 26th November, 2010, Mumbai, India.

·         Workshop on “Electron Microscopy and its Applications” by Advance Instrumentation Research Facility, 28-29 February 2012, AIRF, JNU, New Delhi, India.