•  Synthesis, Structural, Optical, Morphological and Elemental Characterization of  CTAB capped CdS Quantum Dots by facile chemical precipitation Technique, Recent Trends in Materials Science and Applications, Springer Proceedings in Physics,  189( 2017) 341-348.
• Structural and electrical characteristics of GaN, n-GaN and A1xGa1_xN,  P. Arivazhagan , R. Ramesh , Ramadoss Roop Kumar , Eric Faulques , Fouad Bennis , K. Baskar , Journal of Alloys and Compounds 656 (2016) 110-118 
• Synthesis, growth, optimization, bulkSR method growth, fabrication of indigenious optical element and anisotropic studies on guanidinium L-monohydrogen tartrate (GuHT) single crystal for nonlinear optical device application, P.Vivek, R. Roop Kumar, P.Murugakoothan, JCG 412(2015) 40-48, Elsevier Publications.
•  Modulus and hardness evaluations of sintered  bioceramic powders and functionally graded bioactive composites by nano-indentation technique, R.Roop Kumar, M.Wang, Materials Science and Engineering A, 338/1-2, 230-236, 2002.
•  Functionally graded bioactive coatings of hydroxyapatite/titanium oxide composite system, R.Roop Kumar, M.Wang, Materials Letters, 55/3. 133-137, 2002.
•  Functionally graded coatings of HA-G-Ti composites and its in-vivo studies, R.Roop Kumar, S.Maruno, Materials Science and Engineering A, 334/1-2, 156-162, 2002.
• Biomimetic Deposition of Hydroxyapatite on Brushite Single Crystals Grown by the gel Technique, R.Roop Kumar, M.Wang, Materials Letters, Vol. 49/1, 15-19, 2001.
•  Growth of Brushite Crystals in Sodium Silicate Gel and their Characterization, R.Roop Kumar, M.Wang, Key Engineering Materials, Vols192-195,19-22, 2001.
•   Production and Evaluation of Hydroxyapatite/Tricalcium Phosphate Functionally Graded Coatings, R.Roop Kumar, M.Wang, P.Ducheyne, Key Engineering Materials, Vols192-195, 231-234, 2001.
• Developing Hydroxyapatite/Glass Functionally Graded Coating for Clinical Applications, R. Roop Kumar, M.Wang, Proceedings of 10ICBME, Biomedical Engineering in the New Millennium: Integration and Breakthroughs, 265-266, December 2000.
• Growth of single crystals of Brushite by gel technique and subsequent biomimetic deposition of hydroxyapatite on brushite crystals, R. Roop Kumar, , M.Wang, Transactions of Sixth World Biomaterials Congress, pp 1310, 2000.
• Evaluation of sintered bioceramics and bioceramic coatings using the Nano-Indentation Technique, M.Wang, R. Roop Kumar,H.Y.Yang , Transactions of Sixth World Biomaterials Congress, pp 179, 2000.
• Bioactive functionally graded coating containing spherical hydroxyapatite and glass, R.Roop Kumar, M.Wang,  Proceedings of The International workshop on Advances in Materials Science and Technology, 30, April 2000.
•  Hydrothermal-electrochemical deposition of hydroxyapatite on brushite single crystals grown by gel technique, R.Roop Kumar, M.Wang, Proceedings of Fourth Asian Symposium on Biomedical Materials,  Published by Kobunshi Kankokai Inc, Kyoto, Japan, 31-32, 2000.
• Manufacture and characterization of functionally graded bioactive coatings, R.Roop Kumar, M.Wang, Proceedings of Processing and fabrication of advanced materials 8 (PFAM VIII), World Scientific Publishing Co.Pte.Ltd, 133-140, 1999.
• Development of functionally graded HAGTi composites for prosthetic applications, R.Roop Kumar, S.Maruno, Proceedings of Institute of Materials (East Asia Conference), Materials for health and wealth, March 1999.
•   Characterization of ceramic glass in hydroxyapatite containing glass coated titanium composites, R.Roop Kumar, X.Yang, S.Ban, S.Maruno , Proceedings of Processing and fabrication of advanced materials 6( PFAM VI), Singapore, Vol:2, 1693-1701, 1997.
• Preparation of HAGTi composites having different crystallinity of HA and  their bonding behavior to bone, R.Roop Kumar, X.Yang, S.Ban, S.Maruno, Proceedings of the 3^rd Intl. Symp. on Microstructures and Mech. Properties, Mie, Japan. 618-623, 1997.
•  Growth of single crystals of bismuth trisulphide and bismuth tri iodide in gel, R.Roop Kumar, G.Raman, F.D.Gnanam, Cryst.Res.Tech. 27 (1992) K92.
•  Growth of single crystals of arsenic triselenide in gels, R.Roop Kumar, G.Raman, F.D.Gnanam, J.Mater.Sci.Letts. 11 (1992) 399.
• Growth of single crystals of SbSeCl in gels, R.Roop Kumar, G.Raman, F.D.Gnanam, Cryst. Res.Tech. 26 (1991) K160.
• Growth and micro-hardness studies of bismuth sulpho chloride, R.Roop Kumar, G.Raman, F.D.Gnanam, J.Mater.Sci.Letts. 10 (1991) 911.
•  Effect of growth parameters on BiSCl single crystals in gel, R.Roop Kumar, G.Raman, F.D.Gnanam, Indian Journal of Physics 65A (1991) 66.
• Effect of neutral gel on the growth of single crystals of bismuth sulpho iodide, R.Roop Kumar, G.Raman, F.D.Gnanam, Cryst. Res.Tech. 25 (1990) K289.
• Effect of seeding on the growth of single crystals of bismuth sulpho chloride, R.Roop Kumar, G.Raman, F.D.Gnanam, Cryst. Res.Tech. 25 (1990) K166.
• Growth if single crystals of bismuth sulpho chloride in gel, R.Roop Kumar, G.Raman, F.D.Gnanam, J.Mater. Sci. 24 (1989) 4535.
• Growth of single crystals of bismuth sulpho iodide in gel, R.Roop Kumar, G.Raman, F.D.Gnanam, J.Mater. Sci. 24 (1989) 4531

 

Presentations :

 

·         5^th Annual NTU-SGH Biomedical Engineering Symposium, Singapore, 25^th April 2002.

 

·         The Fifth Asian Symposium on Biomedical Materials, Hong Kong, 9-12 December 2001.

 

·         10^th International Conference on Biomedical Engineering, Singapore, 6-9 December 2000.

 

·         13^th International Symposium on Ceramics in Medicine, BIOCERAMICS 13, Bologna, Italy ,

·         22-26 Nov 2000.

 

·         World Biomaterials Congress, Kamuela, Hawaii, USA 15-20 May 2000.

 

·         The International workshop on Advances in Materials Science and Technology, Singapore 3-6 April 2000.

 

·         The Fourth Asian Symposium on Biomedical Materials, Singapore 1-3 December 1999.

 

·         International Conference on Processing and Fabrication of Advanced Materials 8, Singapore

·         8-10 September 1999.

 

·         7^th Institute of Materials (East Asia) Conference on Materials for Health and Wealth, Singapore 26 March 1999.

 

·         International Conference on Processing and Fabrication of Advanced Materials 6, Singapore

·         24-26 November 1997.

 

·         The Third International Symposium on Microstructures and Mechanical Properties of New Engineering Materials, Mie University, Tsu, Japan 6-8 August 1997.

 

·         10^th International Conference on Crystal Growth, San Diego, USA 16-22 August 1992.

 

·         XXIII National Seminar on Crystallography, Malaviya Regional Engineering College, Jaipur, India 23-25 March 1992.

 

·         XXII National Seminar on Crystallography, Indian Association for Cultivation of Science, Calcutta, India 26-28 December 1990.

 

·         8^th American Conference on Crystal Growth, Vail, Colorado, USA 15-20 July 1990.

 

·         National Seminar on Crystallography, BARC, Bombay, India 27-29 December 1989.

 

·         9^th International Conference on Crystal Growth, Sendai, Japan 20-25 August 1989.

 

·         National seminar on Crystallography, Banaras Hindu University, Varnasi, India 14-17 December 1988.

 

·         International Conference and Intensive Tutorial Course on Semiconductor Materials, Department of Physics, University of Delhi, Delhi, India 8-16 December 1988.

 

·         XIX National Seminar on Crystallography, Gandhiji University, Kerala, India 18-20 Dec ember 1987.

 

·         III National Seminar on Crystal Growth, Crystal Growth Centre, Anna University, Madras, India 16-19, February 1987.

 

·         XVII  National Seminar on Crystallography, Jammu University, Jammu, India 7-9, October 1986.