1. Liquid Crystal Research Lab, Department of Physics, University of Lucknow, Lucknow, India
2. Unité de Dynamique et Structure des Matériaux Moléculaires, Dunkerque, France
3. Department of Chemistry, C U Shah University, Wadhwan, Surendranagar, Gujarat, India
4. Soft Condensed Matter Laboratory, Raman Research Institute, C. V. Raman Avenue, Bangalore, India