Manpower Details

Designation: Scientist D
Emp ID: 2038
Work Place: Hyderabad Laboratory


  1. A FILTRATION APPARATUS FOR THE REMOVAL OF OXIDES DURING THE PURIFICATION OF CADMIUM,  N. R. Munirathnam, D. S. Prasad, Patent No. 277702 granted on 29.11.2016

  2. AUTOMATIC SPEED CONTROLLER FOR ZONE REFINER, N.R. Munirathnam, D. S. Prasad, T. L. Prakash, Patent submitted, Application No. 1070/DEL/2012.


  1. Determination of Effective distribution coefficient of impurities during zone refining of  tellurium - D. S. Prasad, N. R. Munirathnam, J. V. Rao and T. L. Prakash; International Journal of Modern Physics B; Vol. 22 (16) (2008), p.2583-88.

  2. Profiling of selenium removal in hydrogen ambient zone refined tellurium bar using RF-GDOES, G. Anil, M.R.P. Reddy, D.S. Prasad, S.T. Ali, N.R. Munirathnam and T.L. Prakash, Materials Characterization  58, 2007, 92-95.

  3. Effect of multi pass, zone length and translation rate on segregation of impurities during zone refining of tellurium, D.S. Prasad, N.R. Munirathnam, J.V. Rao and T.L.Prakash, Vol 60, 15, 2006, Materials Letters, 1875-79.

  4. Purification of tellurium by single-run multiple vacuum distillation technique, S. T. Ali, D. S. Prasad, N. R. Munirathnam and T. L. Prakash, Separation and Purification Technology, 43 (2005) 263-267.

  5. Removal of Selenium and preparation of 7N tellurium for optoelectronic device Applications. N.R.Munirathnam, D.S. Prasad, J.V.Rao and T.L.Prakash,  Phosphorous,  Sulfur, silicon and related elements, vol. 180, No. 3-4, March-April , 2005.

  6. Purification of tellurium upto 5N by vacuum distillation; D.S. Prasad, N.R. Munirathnam, J.V. Rao, T.L. Prakash, Materials Letters, 59 (2005) pp. 2035-2038.

  7. Method of preparation and Characterization of high purity tellurium oxide for optoelectronic and nuclear medicine applications, N.R. Munirathnam, S. Rajesh Kumar, D.S. Prasad, Ch. Sudheer, T.L. Prakash; Metals, Materials and processes, Vol. 17 (2005) No.2, pp. 161-164.

  8. High purity tellurium production using dry refining proceses. N.R. Munirathnam, D.S. Prasad, J.V. Rao and T.L. Prakash, Bulletin of Materials Science, Vol. 28, No.4, July 2005, 309-311.

  9. Zone refining of Cadmium and related characterization,  N.R. Munirathnam,  D.S. Prasad, J.V.Rao, Ch. Sudheer and T.L.Prakash, vol. 28 (3), Bulletin of materials science, 2005, 209-212.

  10. Purification of tellurium to 6N+ by quadruple zone refining,  N.R. Munirathnam, D.S. Prasad, Ch. Sudheer and T.L.Prakash; vol. 254,  Journal of crystal growth, 2003.

  11. Preparation of high purity tellurium by zone refining. N. R. Munirathnam, D.S.Prasad, Ch. Sudheer, A.J.Singh and T.L.Prakash, published in ‘Bulletin of materials science’ vol. 25, No.2, April 2002, pp 79-83.

  12. Tellurium purification: Various techniques and limitations, D. S. Prasad, Ch. Sudheer, N. R. Munirathnam and T.L.Prakash, ‘Bulletin of materials science’ vol. 25, No.6, Nov.,  2002.