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National College Jayanagar > Academics > Department & Faculty > PG > Department of Physics > Dr.R.Rajaramakrishna, M.Sc., B.Ed.,Ph.D.

Dr.R.Rajaramakrishna, M.Sc., B.Ed.,Ph.D.

Research Interests:

His research interests include: Light-induced phenomena in glass. Glasses for optical limiting properties and photonic devices that control amplitude gain or extinction, polarization, phase, reflection and refraction of light including the protection of human eyes and sensitive optical detectors from accidental exposure to intense light beams. Glassescontaining RE ions have stimulated extensive interest due totheir potential application for high-density optical storage, under sea communication, color displaysand excellent lasing materials.

Citations         : 626 (Google Scholar Page) / 545 (Scopus IndexPage)

h-index           : 13 (Google Scholar Page) / 12 (Scopus Index Page)

i10-index        : 19

API Score       :82+(Academic Performance Indicator)

Research Scoreas per Annexure III UGC regulations act 2018: 340 to 380 Points

EDUCATION

PDF (Post-Doc Fellow),NPRU, CEGM, Thailand during 1st Dec 2017- 31st Jan 2020

Thesis title:              “Several Ln3+ doped oxyfluoride Glass Materials with Judd-Ofelt (JO) Analysis”.

Supervisor:               Prof. Dr. Jakrapong Kaewhao, Thailand

Job involved in teaching Glass science and technology to PhD and Master students and research activities related to post-doctoral project.

2010-2014: Ph.D., (Doctor of Philosophy) in Physics, Bangalore University, India

Thesis title:              “Synthesis, Properties and Structural Investigation of Certain Glass and Glass-Ceramics embedded with metal nanoparticle (MNP)”.

Supervisor:               The Late. Prof. Dr. Rajan.V.Anavekar

2007-2008: B.Ed., (Bachelor of Education) Bangalore University, Bangalore, India

Physics, Chemistry and Mathematics with first class

Dharmaguru BEd College, Bagepalli, Bangalore University

2005-2007: M.Sc. (Physics), (Master of Science) Bangalore University, Bangalore, India with First Class

Department of Physics, Bangalore University.

2002-2005: B.Sc., (Bachelor of Science) Bangalore University, Bangalore, India

Physics, Chemistry and Mathematics,

National college, Bagepalli, Bangalore University

RESEARCH PROJECTS

Visiting Scientist,

Lehigh University, Bethlehem, PA, USA during Jul 2012- Jan 2013:

Department of Material Science, International Material Institute (IMI-NFG), Lehigh

Project Title:             “Nonlinear optical properties of Au doped glass and Rare-earth doped on oxide glasses”

Supervisor:               Prof. Himanshu Jain (Diamond Scientist)

Responsibility involved on investigating the reduction mechanism of Au nanoparticle doped on oxide glasses and also to study the spectroscopic behaviour of RE ion doped on oxide glasses.

 

Research Fellow (Junior&Senior),

DAE-BRNS, Mumbai, INDIA during Dec 2010- Dec 2013:

Department of Physics, Bangalore University, Bangalore, India

Project Title:             “E-beam irradiation effects in certain oxide glasses”

Supervisor:               TheLate.Prof. Dr. Rajan. V. Anavekar (Supervisor)

Role and Responsibility involved as (Junior Research Fellow (2010-2012) and Senior Research Fellow (2013)) on setting up / operating the laboratory of PE (UV-VIS) lambda-35 spectrophotometer, Programmable Muffle furnace, Digital balance and synthesising glasses doped with Au nano particles and to study the electron beam irradiation effects on how Au+ reduces to Au0.

 

Research Trainee,

National Aerospace Laboratories (NAL), Bangalore, India

during 15th Dec 2008- 14th Dec 2009:

Surface Engineering Division, NAL, Bangalore, India

Project Title:             “Deposition and characterization of TiAlSiN nanocomposite coatings prepared by reactive pulsed direct current unbalanced magnetron sputtering”

 

Supervisor:               Dr. Harish C Barshilia (Scientist H)

Responsibility involved on operating Four-Cathode reactive pulsed DC unbalanced magnetron sputtering instrument (Thin Film Deposition), TiAlSiN Hard Coatings on commercially available HSS drill bits, mild steel and silicon substrates.

 

 

PROFESSIONAL EXPERIENCE

 

Dec 2020– till nowCo-Ordinator &Associate Professor, National College, Jayanagar, India

Job involved Administration of the department of PG studies & Research in Physics, teaching Physics to Post-graduate students (M.Sc.).

Topics: Material Science, Condensed Matter Physics.

Feb 2020 – Dec 2020Associate Professor, National College, Jayanagar, India

Job involved to teach post graduate (MSc-Physics) studentsand involve in the research and development in the department of PG studies & Research in Physics. Subjects handling: Solid State Physics, Material Science, Mathematical Physics, Research Activities.

Dec 2016 –Nov 2017Co-Ordinator &Associate Professor, National College, Jayanagar, India

Job involved Administration of the department of PG studies & Research in Physics, lecturing Physics to Post-graduate students (M.Sc.). On Sabbatical leave I was attended NPRU, Thailand to complete my Post-Doctoral Fellowship.

Topics: Material Science, Condensed Matter Physics.

Dec 2017 – Jan 2020: Sabbatical Leave for Post-Doctoral Fellow (PDF) to Nakhon Pathom Rajabhat University from National College, Jayanagar, India

 

Sept 2014 – Dec 2016: Assistant Professor, National College, Jayanagar, India

Department of Physics, National College.

Job involved lecturing Physics to Post-graduate students.

Topics: Condensed Matter Physics, Material Science, Electronics, Quantum Mechanics.

Feb 2010- Sept 2010: Lecturer in Physics, Dr. Ambedkar Institute of Technology, Bangalore, India

Department of Physics, Dr. A.I.T Engineering College.

Job involved lecturing Physics to Engineering students.

Topics: Crystallography, Lasers, Quantum Mechanics and Electronics

Aug 2007- Jul 2008: Lecturer in Physics, National College, Bagepalli, India

Department of Physics, National College.

The job involved lecturing Physics to Undergraduate and graduate students.

Topics: Modern Physics, Quantum Mechanics, Electrodynamics, Thermodynamics.

 

PRESENTATIONS: INVITED SPEAKER

  1. “Comparative Study on Au-Ag composition in Lithium Zinc Calcium Fluroborate Glasses: Nonlinear Optics Perspective”, Rajaramakrishna (Keynote Speaker), (AISTSSE-2020), 17th November 2020, Online platform, Medan City, North Sumatera – Indonesia.http://sitsefmipa.unimed.ac.id/2020/
  2. “Metal nano particle doped glasses for laser limiting glasses”, Rajaramakrishna (Invited Speaker), The 1st Glass and Optical Materials Division Thailand Meeting (1st GOMD-Thailand), August 6th –7th2020, Fisherman’sResort, Phetchaburi, Thailand.
  3. “Structural and luminescence properties of Pr3+ doped Barium Boro-Tellurite glasses for laser host matrix”, Rajaramakrishna (Invited Speaker), The 9th International Science, Social Science, Engineering and Energy Conference (ISEEC-2018), May 2nd- 4th 2018, Ambassador Hotel, Bangkok, Thailand.
  4. “Structural and nonlinear optical properties of Au nanoparticle doped oxide glasses for laser host”, Rajaramakrishna (Invited Speaker), The8th International Conference on Theoretical and Applied Physics (ICTAP-2018), Grand Inna Hotel Medan, JI.Balaikota No.2, Kesawan, Medan City, North Sumatera – Indonesia.http://ictap.web.id/
  5. Rajaramakrishna (Invited Speaker), International Conference on Science and Technology Applications (ICoSTA-2019), 13th – 14th November 2019, Garuda Plaza Hotel, Jalan Sisingamangaraja No.18, Medan City, North Sumatera – Indonesia.https://icosta.unimed.ac.id

 

INTERNATIONAL / NATIONAL PEER REVIEWED PUBLICATIONS

 

2021

 

  1. Dy3+ doped B2O3 – Li2O – CaO – CaF2 glass for efficient white light emitting sources, A.R. Venugopal, Rajaramakrishna, K.M. Rajashekara, J. Rajaguguk, N.H. Ayachit, S. Kothan, J Kaewkhao, Journal of Non-Crystalline Solids 554 (2021) 120604.(IF:2.929)

2020

 

  1. Effect of BaO on Lead Free Zinc Barium Tellurite Glass for Radiation Shielding Materials in Nuclear Application, K. Boonin, P. Yasaka, P. Limkitjaroenporn, Rajaramakrishna, A. Askin, M. I. Sayyed, S. Kothan, Jakrapong Kaewkhao,Journal of Non-Crystalline Solids 550 (2020) 120386.(IF:2.929)
  1. X-ray induced luminescence, optical, compositional and structural investigations of natural and imitation rubies: Identification technique, Y. Tariwong, N. Chanthima, Rajaramakrishna, H.J. Kim, J. Kaewkhao, Radiation Physics and Chemistry177 (2020) 109089. (IF:2.226)
  1. Spectroscopic study of Nd3+ ion-doped Zn-Al-Ba borate glasses for NIR emitting device applications,M. Djamal, L. Yuliantini, R. Hidayat, N. Rauf, M. Horprathum, Rajaramakrishna, K. Boonin, P. Yasaka, J. Kaewkhao, V. Venkatramu, S. Kothan, Optical Materials, Volume 107, (2020) 110018. (IF:2.779)
  1. Structural and luminescence study of Dy3+ doped phosphate glasses for solid state lighting applications, Shoaib, R. Rajaramakrishna, G. Rooh, N. Chanthima, H.J. Kim, C. Saiyasombat, R. Botta, N.Nuntawong, S.Kothan, J.Kaewkhao, Optical Materials 109, (2020), Article number 110322.(IF:2.779)
  1. Novel plaster waste glass for solid state lighting applications, A. Angnanon, Rajaramakrishna, N. Srisittipokakun, B. Damdee, J. Kaewkhao, Optical Materials 109, (2020) 110180.(IF:2.779)
  1. Reddish-Orange Emission and Judd-Ofelt Investigation of Sm3+ Ions Doped in Zinc-Bismuth-Phosphor-Tellurite Glasses for Solid Lighting Application, Sangeeta B. Kolavekar, Narasimha. H. Ayachit, Rajaramakrishna, Pramod N G, J. Kaewkhao, Journal of Luminescence, 2020 (Accepted). (IF: 3.280)

 

  1. Role of 5 mol% Mg-Ni on the Structural and Magnetic Properties of Cobalt Chromates Crystallites Prepared by Solution Combustion Technique, K. Manjunatha, V. Jagadeesha Angadi, Rajaramakrishna& U. Mahaboob Pasha, Journal of Superconductivity and Novel Magnetism, 2020. (IF:1.244).
  2. Effect of SnO2/SeO2 on Au Nano-particles doped Silicate glasses: A Structural study using XAS and EXAFS refinements, Rajaramakrishna, C. Saiyasombat, Y. Ruangtaweepa,J. Kaewkhao,Optical and Quantum Electronics,52 (5) (2020). (IF:1.842)
  3. Photoluminescence properties and energy transfer investigations of Gd3+ and Sm3+ co-doped ZnO–BaO–TeO2 glasses for solid state laser application, Sangwaranatee, P.Yasaka, R. Rajaramakrishna, S. Kothan, J. Kaewkhao, Journal of Luminescence, 224, (2020)117275. (IF: 3.280)
  1. Investigation of XANES study and energy transport phenomenon of Gd3+ to Ce3+ in CaO–SiO2–B2O3 glasses, Rajaramakrishna, S. Kaewjaeng, J. Kaewkhao, S. Kothan, Optical Materials 102 (2020) 109826. (IF:2.779)
  1. Investigations on nonlinear optical properties of gold nanoparticles doped fluoroborate glasses for optical limiting applications, Abhiram Jagannathan, Rajaramakrishna R, Rajashekara K M, Jagannath Gangareddy, Vinayak Pattar K, Venugopal Rao S, Eraiah B, Jagadeesha Angadi V, Kaewkhao J, Kothan S, Journal of Non-Crystalline Solids, 538 (2020) 120010. (IF:2.929)
  1. Structural analysis and luminescence studies of Ce3+: Dy3+ co-doped calcium zinc gadolinium borate glasses using EXAFS, Rajaramakrishna, Y. Ruangtaweepa, S. Sattayaporn, P. Kidkhunthod, S. Kothan, J. Kaewkhao, Radiation Physics and Chemistry 171 (2020) 108695.(IF:2.226)
  1. MD Simulation and Luminescence properties of Eu3+ doped Molybdenum Gadolinium Borate glasses for red emission Rajaramakrishna, Pattarapong Nijapai, Pinit Kidkhunthod, H. J. Kim, J. Kaewkhao, Journal of Alloys and Compounds, 813 (2020) 151914. (IF:4.65)
  1. Physical, optical properties and radiation shielding studies of xLa2O3-(100-x) B2O3 glass system, Y. Al-Hadeethi, M.I. Sayyed, J. Kaewkhao, Bahaaudin M. Raffah, Rahma Almalki, Rajaramakrishna, Mahmoud A. Hussein, Ceramics International, 46 (2020) 5380–5386. https://doi.org/10.1016/j.ceramint.2019.10.293(IF: 3.83)
  1. Ravangvong, N. Chanthima, R. Rajaramakrishna, H.J. Kim, J. Kaewkhao, Effect of sodium oxide and sodium fluoride in gadolinium phosphate glasses doped with Eu2O3 content, Journal of Luminescence, 219, (2020), 116950.doi: https://doi.org/10.1016/j.jlumin.2019.116950.(IF: 3.280)
  1. Comparative study of optical and luminescence properties of Sm3+-ions doped Li2O–Gd2O3–PbO–SiO2 and Li2O-GdF3-PbO–SiO2 glasses for orange emission solid state device application, I Khan, G Rooh, R Rajaramakrishna, N Sirsittipokakun, SHJ Kim, S Kothan, J Kaewkhao, K Kirdsiri, Journal of Luminescence, 2020, 117136. (IF: 280)
  1. Ravangvong, R. Rajaramakrishna, N. Chanthima, N. Sangwaranatee and J. Kaewkhao, Journal of Physics: Conference Series, 1428 (2020) 012029 doi:10.1088/1742-6596/1428/1/012029.
  1. Eu3+ ions doped SrO-CaO-Li2O-B2O3glasses for optical display material application, A.R. Venugopala, J. Kaewkhao,Abhiram J, Rajashekara K M, Rajaramakrishna,N. G. Pramod, Chethan Rao, Journal of Physics: Conf. Series 1485 (2020) 012053. doi:10.1088/1742-6596/1485/1/012053.

 

2019

  1. Impact of solvents on energy gap, photophysical, photometric properties for a new class of 4-HCM coumarin derivative: Nonlinear optical studies and optoelectronic applications, A.G. Pramod, C.G. Renuka, Y.F. Nadaf, Rajaramakrishna, Journal of Molecular Liquids, (2019), 111383. (IF: 5.065)
  1. 5μm Luminescence Enhancement of Er3+ by Local Field Surface Plasmon Resonance of Ag Nanoparticles in Silicate Glasses 1.5μm Luminescence Enhancement of Er3+ by Local Field Surface Plasmon Resonance of Ag Nanoparticles in Silicate Glasses, R. Rajaramakrishna, Y. Ruangtaweep, N. Sangwaranatee, J. Kaewkhao, Journal of Non-Crystalline Solids, 521, (2019) 119522. (IF:2.929)
  1. An extensive investigation of physical, optical and radiation shielding properties for borate glasses modified with gadolinium oxide, Y. Al‑Hadeethi, M. I. Sayyed, J. Kaewkhao, Bahaaudin M. Raffah, Rahma Almalki, Rajaramakrishna, Applied Physics A, (2019) 125:749, 1-10. (IF:1.810)
  1. Physical, structural, optical, and radiation shielding properties of B2O3–Gd2O3–Y2O3 glass system, Y. Al‑Hadeethi, M. I. Sayyed, J. Kaewkhao, A. Askin, Bahaaudin M Rafah, E. M. Mkawi, Rajaramakrishna, Applied Physics A (2019) 125:852, 1-7. (IF:1.810)
  1. Structural, spectroscopic and optical gain of Nd3+ doped fluorophosphate glasses for solid state laser application, Juniastel Rajagukguk, Rappel Situmorang, Fitrilawati, Mitra Djamal, Rajaramakrishna, J. Kaewkhao, Pham Hong Minh, Journal of Luminescence 216 (2019) 116738. (IF:3.280)
  1. Photoluminescence and white light generation of Dy2O3 doped Li2O-BaO-Gd2O3– SiO2 for white light LED, I. Khan, G. Rooh, Rajaramakrishna, N. Srisittipokakun, C. Wongdeeying, N. Kiwsakunkran, N. Wantana, H.J. Kim, J. Kaewkhao, S. Tuscharoen, Journal of Alloys and Compounds, 774 (2019), 244-254. (IF: 4.65)
  1. Comparative study of Sm3+ ions doped phosphate based oxide and oxy-fluoride glasses for solid state lighting applications, Shoaib, G. Rooh, R.Rajramakrishna, N. Chanthima, H.J.Kim, J. Kaewkhao, Journal of Rare Earths 37 (2019) 374-382. (IF: 3.104)
  1. Energy transfer phenomenon of Gd3+ to excited ground state of Eu3+ ions in Li2O-BaO-Gd2O3-SiO2-Eu2O3 glasses, Khan, G. Rooh, R. Rajaramakrishna, N. Sirsittapokakun, H.J.Kim, J. Kaewkhao, K. Kirdsiri, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 210 (2019) 21–29. (IF:3.232)
  1. Luminescence characteristics of Sm3+-doped lithium barium gadolinium silicate glasses for Orange LED’s, Khan, G. Rooh, R. Rajaramakrishna, N. Sirsittapokakun, H.J.Kim, J. Kaewkhao, K. Kirdsiri, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 214 (2019) 14–20. (IF:3.232)
  1. Physical and luminescence properties of samarium doped oxide and oxyfluoride phosphate glasses M. Shoaib, G. Rooh, Rajramakrishna, N. Chanthima, H.J.Kim, S. Tuscharoen, J. Kaewkhao, Materials Chemistry and Physics (2019). (IF:3.408)
  1. Intriguing energy transfer mechanism in Oxide and Oxy-fluoride phosphate glasses, Shoaib, G. Rooh, N. Chanthima, R. Rajaramakrishna, H. J. Kim, C. Wongdeeying, J. Kaewkhao,Optical Materials 88 (2019) 429–444. (IF:2.779)
  1. Development of ZnO-BaO-B2O3-TeO2 glass doped with Sm3+ for orange emitting material,P. Yasaka, Rajaramakrishna, W. Wongwan, P. Yamchumporn, H.J. Kim, J. Kaewkhao, Solid State Sciences, (2019), https://doi.org/10.1016/j.solidstatesciences. 2019.106041. (IF: 2.434)
  1. Influence of alkaline earth oxides on Eu3+ doped lithium borate glasses for photonic, laser and radiation detection material applications, K. Kirdsiri, Rajaramakrishna, B. Damdee, H.J. Kim, N. Nuntawong, Mati Horphathum,J. Kaewkhao, Solid State Sciences 89 (2019) 57–66. (IF:2.434)
  1. Dy3+ Ions doped (Na2O/NaF)-Gd2O3-P2O5 Glasses for Solid State Lighting Material Applications, Ravangvong, N. Chanthima, R. Rajaramakrishna, H. J. Kim, N. Sangwaranatee, J. Kaewkhao, Solid state sciences, (2019), 105972.(IF:2.434)
  1. High transparency La2O3-CaO-B2O3-SiO2 glass for diagnosis x-rays shielding material application, S. Kaewjaeng, S. Kothan, W. Chaiphaksa, N. Chanthima, Rajaramakrishna, H.J. Kim, J. Kaewkhao, Radiation Physics and Chemistry160 (2019) 41–47(IF:2.226)
  1. Photoluminescence Properties of Dy3+ Ion-Doped Li2O-PbO-Gd2O3-SiO2 Glasses for White Light Application, I. Khan, G. Rooh, Rajaramakrishna, N. Srisittipokakun, H. J. Kim, J. Kaewkhao, Y. Ruangtaweep, Brazilian Journal of Physics, (2019), 1-10.(IF:0.895)
  1. Sm3+ Doped Lithium Strontium Borate Glasses for Solid State Lighting Applications, A. R. Venugopal, Rajaramakrishna, J. Abhiram, Vinayak Pattar, K. M. Rajashekara, and J. Kaewkhao, Glass Physics and Chemistry, (2019), Vol. 45 (5),332–343. (IF:0.668)
  1. Energy Transfer and Spectroscopic Investigation of Dy2O3 Doped Li2O–BaO–GdF3–SiO2 for White Light LED, I. Khan, G. Rooh, Rajaramakrishna, N. Srisittipokakun, H. J. Kim, J. Kaewkhao, Glass Physics and Chemistry, (2019), Vol. 45 (5),332–343.(IF:0.668)
  1. Spectral analysis of Ho3+ doped barium zinc boro-tellurite glasses for yellow-green luminescent applications, R,C. Wongdeeying,P. Yasaka, P. Limkitjaroenporn, Jakrapong Kaewkhao, Glass Physics and Chemistry, Vol:45,

No.1 (2019).  (IF:0.668)

  1. Effect of SnO2 and SeO2 in Non-linear optical properties of Au nanoparticle doped self-striking red ruby glasses, Abhiram J, Rajaramakrishna R, Y. Ruangtaweep, Jakrapong Kaewkhao,Thai Journal of Nanoscience and Nanotechnology, Vol.4 Issue.1 (2019).
  1. Physical and luminescence properties of rare earth doped phosphate glasses for solid state lighting applications, M. Shoaib, N. Chanthima, G. Rooh, Rajaramakrishna, and J. Kaewkhao, Journal of Thai Interdisciplinary Research, Volume 14, Number 3, Pages 20 – 26 (2019).

2018

  1. Sm3+ doped lithium borate glasses with different modifiers (M = Mg/Ca/Sr/Ba) as a orange light emitting phosphor for WLED’s, Kirdsiri, R. Rajaramakrishna, B. Damdee, H.J. Kim, S. Kaewjaeng, S. Kothan, J. KaewkhaoJournal of Alloys and Compounds 749 (2018) 197-204. (IF: 4.175)
  1. Development of Eu3+ doped Li2O-BaO-GdF3-SiO2 oxyfluoride glass for efficient energy transfer from Gd3+ to Eu3+ in red emission solid state device application, I. Khan, G. Rooh, Rajaramakrishna, N. Sirsittipokakun, H. J. Kim, C. Wongdeeying, J. Kaewkhao,Journal of Luminescence 203 (2018) 515–524.(IF:2.961)
  1. Pr3+ doped BaO:ZnO:B2O3:TeO2 glasses for laser host matrix, Rajaramakrishna R, Chananya W, Patarawagee Y, Pruittipol L, Narong S, and Jakrapong K, Journal of Metals, Materials and Minerals, Vol.28 No.2 , (2018), 47-54
  1. Sm3+-doped molybdenum gadolinium borate glasses for orange emission laser active medium, Rajaramakrishna, Y. Ruangtawee, J. Kaewkhao, Ukranian Journal of Physics (2018) Vol. 63, No. 8, 721-732. ISSN 2071-0186, https://doi.org/10.15407/ujpe63.8.721.

2017

 

  1. “Optical properties of Nd3+ doped BaF2-ZnO-B2O3 Oxyflouride glasses” N.B. Shigihalli, Yogesh Babu. N, Ashoka. G, Rajaramakrishna, International journal of physical and applied sciences, (2017), ISSN No: 2394-5710.

2014

  1. “Spectroscopic properties of Sm3+ – doped lanthanum borogermanate glass, Rajaramakrishna, Brian Knorr, Volkmar Dierolf, R.V. Anavekar, H. Jain, Journal of Luminescence, 156 (2014) 192–198. (IF:2.719)
  1. “Structure and nonlinear optical response of Au nanoparticles embedded in lead lanthanum borate glass”, Rajaramakrishna, C. Saiyasombat, R.V. Anavekar, H. Jain, Journal of Non-Crystalline Solids 406 (2014) 107–110. (IF:1.766)

2013

  1. “Optical and Radiative Properties of Nd3+– doped Lead-Tellurite-Borate Glasses”, N.B Shigihalli, Mr. R. Rajaramakrishna, Prof. R.V. Anavekar,Canadian Journal of Physics, Vol.91 (2013), 322-327. (IF:0.928)
  1. “Judd-Ofelt analysis of Sm3+ doped lead–zinc–borate glasses”, ­R,­­­Lakshmikantha. N.H. Ayachit, R, R.V.Anavekar, (IJPAS), International Journal of Pure & Applied Sciences, Vol.02 No. 01, May (2013), 23-34, ISSN No. 2250-2289.

2012

 

  1. “Nonlinear optical studies of lead lanthanum borate glass doped with Au nanoparticles”, Rajaramakrishna, Safakath Karuthedath, R.V. Anavekar, H. Jain, Journal of Non-Crystalline Solids 358 (2012) 1667–1672. (IF:1.597)
  1. “Characterization and structural studies of lithium doped lead zinc phosphate glass system” Lakshmikantha.R,R, Anavekar.R.V and Ayachit .N.H, Materials Chemistry and Physics 133 (2012) 249– 252. (IF:2.072)
  1. “Characterization and structural studies of vanadium doped lithium-barium-phosphate glasses”, R, Rajaramakrishna.R, Anavekar.R.V and Ayachit .N.H, Canadian Journal of Physics (2012), Vol. 90, No. 3: pp. 235-239. (IF:0.902)
  1. “Non-Linear Optical Studies of Barium-Borate Glass-Ceramic-Nanocomposite Containing Gold Nanoparticles”, Shivaprakash, R. Rajaramakrishna and R. V. Anavekar,International Journal of Science Research (IJSR), Vol. 01, Issue 04, (2012), 519-523, ISSN No. 2277-7989.

2010

  1. “Deposition and characterization of TiAlSiN nanocomposite coatings prepared by reactive pulsed direct current unbalanced magnetron sputtering”, Harish C. Barshilia, Moumita Ghosh, Shashidhara, Rajaramakrishna, K.S. Rajam, Applied Surface Science, 256 (2010) 6420–6426. (IF:1.92)

SCOPUS INDEXED PROCEEDINGS PRESENTED IN INTERNATIONAL CONFERENCES:

2020

  1. Photoluminescence properties of Bi2MoO6:Dy3+ phosphors fabricated by solid state reactions, R. Chidthong, S. Insiripong, A. Angnanon, J. Tipwan, Rajaramakrishna, and J. Kaewkhao, AIP Conference Proceedings 2279, 060007 (2020).

2019

  1. Radiation shielding properties of BaO:WO3:Na2O:B2O3 glass system using WinXCom program in the range of 1 keV to100 GeV: Theoretical calculation, K Siengsanoh, W Chaiphaksa, R Rajaramakrishna, W Cheewasukhanont and J Kaewkhao, IOP Conf. Series: Journal of Physics: Conf. Series 1259 (2019) 012009.
  1. Glass Material and Their Advanced Applications, Rajaramakrishna, Jakrapong Kaewkhao, UNNES International Conference on Research Innovation and Commercialization 2018, KnE Social Sciences, (2019) pages 796–807.

2018

  1. Structural studies of transition metal ions doped in biomass ash as silica source for glass production in Thailand, Rajaramakrishna, R. Botta, N. Nuntawong, Y. Ruangtaweep, N.Sangwaranatee, J. Kaewkhao, Journal of Physics: Conf. Series1120(2018) 012104
  1. Gamma-ray shielding effect of Gd3+ doped lead barium borate glasses, Harshitha Kummathi, Naveen Kumar P., Vedavathi T. C., Abhiram J., and Rajaramakrishna, AIP Conf. Proc. 1953, 090051 (2018); doi: 10.1063/1.5032898

2016

  1. “Spectroscopic study of neodymium doped lead-bismuth-borate glasses”,Altaf Pasha, Dayani p, Mahesh Negalur, Manjunatha Swamy, Abhiram J, and Rajaramakrishna, AIP conf. proc. 1728, (2016) 020264-1–020264-7; http://dx.doi.org/10.1063/1.4946315

2014

  1. “Elastic properties of Li+ doped Lead Zinc Borate Glasses”, Rajaramakrishna, R.Lakshmikantha and R.V. Anavekar, AIP Conf. Proc. 1591, 736-738; (2014). doi:10.1063/1.4872737

2012

  1. Thermal analysis, spectral characterization and refractive index studies of lithium doped PbO-ZnO-B2O3 glass,R,­­­ Lakshmikantha.R,R.V.Anavekar, AIP Conf. Proc. 1447, 529-530 (2012); doi: 10.1063/1.4710117
  1. Transport Properties of PbO-P2O5-ZnO-Li2O Glass System, R,Rajaramakrishna.R, Anavekar.R.V and Ayachit.N.H, AIP Conf. Proc. 1447, 551-552 (2012); doi: 10.1063/1.4710122
  1. Optical properties of Eu2O3 doped lead fluoroborate glass, Akshatha Wagh, K.K.Mahato, Lakshmikantha.R, R, Sudha D.Kamath, AIP Conf. Proc. 1447, 537 (2012); doi: 10.1063/1.4710115

2011

  1. Optical Properties of Eu3+ Doped Lead Borate Tellurite and Zinc Borate Tellurite Glasses, Shigihalli N B, R,andR. V.Anavekar, AIP Conf. Proc. 1349, 547 (2011); doi: 10.1063/1.3605975.
  1. Optical Properties of PbO-ZnO-P2O5 glasses doped with samarium and neodymium, R, Rajaramakrishna.R. andR.V.Anavekar.AIP Conf. Proc. 1349, 529-530 (2011); doi: 10.1063/1.3605966

2010

  1. Deposition of TiAlSiN nanocomposite coatings using four-cathode reactive direct current unbalanced magnetron sputtering system, KS Barshilia, Harish C and Ghosh, Moumita and Shashidhara, Acharya and Rajaramakrishna and Rajam, nternational Conference on Surface Modification Technologies XXIII, November 2-5, 2009, GRT Temple Bay, Mamallapuram, http://nal-ir.nal.res.in/id/eprint/9839

 

PAPERS PRESENTED IN NATIONAL CONFERENCES (INDIA):

 

  1. Synthesis characterization and optical properties of PbO-ZnO-B2O3 glass doped with Sm3+ and Pr3+, R,­­­ Lakshmikantha. R andR.V.Anavekar, International Conference on Advanced Materials and its Applications (ICAM-2011), Kalasalingam University, Tamilnadu, India. 4th and 5th March 2011.
  1. Characterization and structural studies of vanadium doped lithium-barium-phosphate glasses, R, Rajaramakrishna.R, Anavekar.R.V and Ayachit.N.H, Presented poster, International conference on advanced materials (ICAM-2012), January 5-7, (2012) organised by Loyola College, Chennai, Tamilnadu.
  1. Judd-Ofelt analysis of Nd3+ doped lead–tellurite–borate glasses, N.B, Rajaramakrishna.R,­­­Lakshmikantha. R, R.V.Anavekar, Presented to ICWNCN-2012 (International conference and workshop on Nanostructured Ceramics and other Nanomaterials) conducted by Delhi university (2012).
  1. Non-Linear Optical Studies of Barium-Borate Glass-Ceramic-Nanocomposite Containing Gold Nanoparticles, Y. Shivaprakash, Rajaramakrishna and R. V. Anavekar, Presented to International conferences of Recent Advances in Material science (RAMS-2012) 6th to 8th November (2012).

 

  1. Electrical conductivity of Li2O doped lead zinc borate glass, IUMRS-ICA 2013, December 16-20, (2013),R,­­­ Lakshmikantha. R, R.V.Anavekar, Organized by Indian Institute of Science, Bangalore, India.

Papers Presented / Attended in International conferences

 

  1. Structural studies of transition metal ions doped in biomass ash as silica source for glass production in Thailand, Rajaramakrishna. et. al, The International Conference on Theoretical and Applied Physics (ICTAP), Sept 20th -21st, 2018, Grand Inn Hotel, Medan, Indonesia. http://ictap.web.id/
  2. Sm3+ doped Molybdenum Gadolinium Borate glasses for orange emission laser active medium, Rajaramakrishna. et. al,International Conference on Science and Technology of Emerging Materials (STEMa2018), July 18th – 20th 2018, Holiday Inn, Pattaya, Thailand, http://www.nano.kmitl.ac.th/stema2018/programme/
  3. “Spectroscopic properties of BaO-SrO-B2O3-Nd2O3 glasses for laser host matrix”, Rajaramakrishna, Jakrapong Kaewkhaoand Narong Sangwaranatee,Poster Presentation, The 9th International Science, Social Science, Engineering and Energy Conference (ISEEC-2018), May 2nd- 4th 2018, Ambassador Hotel, Bangkok, Thailand.
  4. “Dy3+ doped borate glasses for White light generation material applications”, Rajaramakrishna, B. Damdee, K. Kirdsiri and J. Kaewkhao, Oral presentation in Muban Chombueng Rajabhat University (MCRU), March 2nd (2018).
  5. “Effect of Au nanoparticles on the nonlinear optical response of lead lanthanum borate glass for saturable absorber applications”, Rajaramakrishna, R.V.Anavekar, H. Jain, presented poster in International Material Institute, (IMI-NFG)  Lehigh University Bethlehem, PA 18015 USA, September 13 (2012).
  6. “Sm3+-doped lanthanum borogermanate glass for active optical functions”, Rajaramakrishna, Brian Knorr, Volkmar Dierolf, R.V. Anavekar, H. Jain, presented poster paper in International Material Institute, (IMI-NFG) Lehigh University Bethlehem, PA 18015 USA, September 13 (2012).
  7. Structural correlation using XANES, EXAFS and Photoluminescence studies of Ce3+ : Dy3+ co-doped calcium zinc gadolinium borate glasses, Rajaramakrishna, Y. Ruangtaweep, Suchinda Sattayaporn, Pinit Kidkhunthod, J. Kaewkhao, ACXAS-2019, Aug 29th-30th 2019, Chiang Mai, Thailand.
  8. “Investigation of XAS study and energy transfer phenomenon of Gd3+ to Ce3+ in calcium silicaborate glasses”, Rajaramakrishna, S. Kaewjeang, W. Klysubun, S. Kothan, J. Kaewkhao, ACXAS-2019, Aug 29th-30th 2019, Chiang Mai, Thailand.

INTERNATIONAL / NATIONAL WORKSHOP ATTENDED IN INDIA:

 

  1. “Theme Meeting on Laser Glass Science & technology” held on 1st& 2nd March 2011 at Sri Venkateshwara University, Tirupati-517502.
  2. “International conference and workshop on Nanostructured Ceramics and other Nanomaterials” (ICWNCN-2012) March 13th 2012, Organized by Delhi university.
  1. “Workshop on science of climate change- Indian scenario (SCC-IS 2013)” at the Department of Post-graduate Studies in Physics, K L E Society’s S.Nijalingappa College, Bangalore During 23-24, August 2013.
  1. “Special workshop on ligand field theory calculation in ASIAN Conference on X-Ray Absorption Spectroscopy 2019 (ACXAS 2019)” by Prof. Dr. Frank de Groot, Utrecht University, Netherlands, Dr. Pieter Glatzel and Dr. Marius Retegan, ESRF, France on August 28th, 2019 held at Holiday Inn, Chiang Mai, Thailand.

Recognition:

  • Conceptualised Google Application: BATCH MATRIX CALCULATOR App was launched by Dr. A. S. Kiran Kumar, Indian Space Research Organisation Director (ISRO Chairman) (Available in Google Play Store)

 

Organized National level Conference on “Emerging Trends in High Energy Physics (NCHEP- 2015)” on 29–1st July 2015 as Co-Convener & Secretary.

Auspice Organization’s:

  • University Grants Commission (U.G.C)
  • Indian Space Research Organization (I.S.R.O)

Venue: Dr. H.N. Kalakshetra, The National Degree College Jayanagar Bangalore- 560070

Delegates of the Conference and Invitee Talks:

The conference was inaugurated by I.S.R.O Chairman Sri. A.S. Kiran Kumar and several other eminent Senior Scientist from, I.G.C.A.R, Kalpakkam, Sri. Bhaskaran, Retd. Emeritus Professor Dr. G Ramachandran, Mysore University, Dr. B. Manikiam, Sir M.Visveswariah chair, Bangalore University, Dr. K.P. Ramesh, Head of Dept. Physics , IISc, Bangalore. Dr. Chethan Krishnan, High Energy Physics Dept. IISc, Bangalore, Dr. B. Rudraswamy, Professor, Department of PG Studies In Physics, Bangalore University, Dr. Sanjeev Ganesh, Head of the Microtron center Mangalore, Mangalore University, Dr. P. Raghotama Rao Retd. Scientist ‘G’ D.R.D.O, Shri. Mohan Ram, Senior Scientist, Nuclear power station, Kaiga, Dr. ChetanRao, PG Dept. of Physics, SDM College Ujire.

 

Organized National level Conference on “Condensed Matter & Space Sciences – 2017” (NCCSS-2017) on 3rd & 4th July 2017 as Co-Ordinator.

Auspice Organization’s: National College, Jayanagar, Bangalore, INDIA

Autonomous Grants

Venue: Dr. H.N. Kalakshetra and B. V. J. Science Centre, The National Degree College Jayanagar Bangalore- 560070.

Delegates of the Conference and Invitee Talks:

The conference was inaugurated by I.S.R.O Distinguished Scientist Sri. P. J. Bhat, President of NES Dr. A. H. Rama Rao and Secretary of NES Prof. S. N. Nagaraja Reddy and several other eminent Senior Scientist from, J.N.C.A.S.R, Bangalore, Dr. S. M. Shivaprasad, Dr. Yellamggad, CeNS, Bangalore, Dr. B. Manikiam, Sir M.Visveswariah chair, Bangalore University, Dr. Harish Barshilia, Head of SED, NAL, Bangalore. Dr. Chandan Das Gupta, Physics Dept. IISc, Bangalore, Dr. B. Eraiah, Professor, Department of PG Studies in Physics, Bangalore University, Dr. P. Raghotama Rao Retd. Scientist‘G’ D.R.D.O.

 

 

 

Organized “International Webinar on Materials Science” (IWMS-2020)

on 28th May 2020 at 5 PM.

Auspice Organization’s: National College, Jayanagar, Bangalore, INDIA

Platform: Cisco WebEx Application

Delegates of the Conference and Invitee Talks:

The conference was inaugurated by, President of NES and Bangalore Science Forum Dr. A. H. Rama Rao.

Invited Talk #1: Dr. JAKRAPONG KAEWKHAO, Director, CEGM, NPRU, Thailand.

Invited Talk #2: Dr. SIRIPRAPA KAEWJANG, Asst. Prof, RLU, CTU, Thailand.

Participants: 100

 

Organized Webinar Series for Teachers on

“EXPLORING ICT INITIATIVES IN HIGHER EDUCATION”

from 13th to 17th July 2020 at 11:30 AM as Technical Expert.

Auspice Organization’s: National College, Jayanagar, Bangalore, INDIA

Platform: Zoom Application

Delegates of the Conference and Invitee Talks:

The conference was inaugurated by, President of NES and Bangalore Science Forum Dr. A. H. Rama Rao.

Invited Talk Day #1:Dr.K. R. Venugopal, Vice-Chancellor, Bangalore University, India.

Invited Talk Day #2: Dr. S. M. Shivaprasad, Director, Higher Education Academy, Govt. of Karnataka.

Invited Talk Day #3: Prof. B. Manjunath, Co-ordinator, Vijayi Bhava Youtube Channel,Dept. of Collegiate Education, Bangalore.

Invited Talk Day #4: Dr. Muralidhar, Associate Professor, Dept. of Computer Science, Bangalore University.

Invited Talk Day #5: Prof. M.K. Sridhar, President, Centre for Education and Social Studies (CESS), Bangalore.

Participants: 300