• Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/026/03/0343-0348

    • Keywords

       

      Poly(vinyl chloride); methylene blue; pH; direct imaging; diffraction efficiency.

    • Abstract

       

      Significant results of our experimental investigations on the dependence of pH on real time transmission characteristics on recording media fabricated by doping PVC with complexed methylene blue are presented. The optimum pH value for faster bleaching was found to be 4.5. In typical applications, the illumination from one side, normal to the surface of this material, initiates a chemical sequence that records the incident light pattern in the polymer. Thus direct imaging can be successfully done on this sample. The recorded letters were very legible with good contrast and no scattering centres. Diffraction efficiency measurements were also carried out on this material.

    • Author Affiliations

       

      M Ushamani1 N G Leenadeenja2 K Sreekumar3 C Sudha Kartha4 Rani Joseph1

      1. Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Cochin 682 022, India
      2. Department of Physics, St. Xaviers College, Aluva 683 101, India
      3. Department of Applied Chemistry, Cochin University of Science and Technology, Cochin 682 022, India
      4. Department of Physics, Cochin University of Science and Technology, Cochin 682 022, India
    • Dates

       
  • Bulletin of Materials Science | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2017-2019 Indian Academy of Sciences, Bengaluru.