Ph.D. ( Physics)
Indian Institute of Technology, Kharagpur (January 2007)
Thesis title:Studies on nonlinear optical materials and processes for efficient photonic devices
Achievements : Completed Successfully

Master of Technology (Solid State Materials)
Indian Institute of Technology, Delhi (December, 1997)
Achievement: Completed Successfully (CGPA 7.68 in 10 point scale)

Master of Science (Physics)
M. P. C. College, Baripada (Utkal University), India (1994)
Achievements: 1st Division

Bachelor of Science (Physics)
M. P. C. College, Baripada (Utkal University), India (1992)
Achievements: 1stDivision , Awarded with the honour of “Distinction”

Higher Secondary (10+2) (Science)
M. P. C. College , Baripada (Council of Higher Secondary Education, Orissa), India (1989)
Achievements: 1st Division

High School (10th Standard)
Board of Secondary Education, Orissa, India (1987)
Achievements: 1st Division, School Topper

Other exam.qualified:
International Exam. GRE(2002)
Indian National Exam Graduate Aptitude Test in Engineering (1995)

• Design/Development of CW, nanosecond, picosecond, femtosecond (ultrafast)solid state lasers and their shaping/diagnostics systems
• Nonlinear optical materials and devices
• Laser material processing and spectroscopy
• Optoelectronics (solar cell, photocatalysis, battery) materials
• Plasmonics
• Agro Physics and Technology

• 21 February 2020- Till date : Professor, School of Physics, G.M. University, Sambalpur, India
• 10 September 2013-20 February 2020 : Associate Professor, Coordinator, Dept. of Physics, KIIT Deemed to be University, Bhubaneswar
• 16 August 2007-15 August 2013: Post doctorate (project scientist), Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Berlin, Germany
• 01 March 2007-02 June 2007 : Post doctorate, Raja Ramanna Centre for Advanced Technology (DAE, Govt. of India), Indore, India
• 04 January 1999-22 July 2003 : Lecturer in Physics and Electronic Engineering, National Institute of Science & Technology, Berhampur, India

• Vice- Chancellor (I/C), GM University, India (March 2025- Continuing)
• Dean, Research, GM University, India
• Chairman, PG Council, GM University, India (April 2022- 2024)
• Director, Internal Quality Assurance Cell, GM University, India (2020- 2022)
• Coordinator, Career Development Cell, GM University, India (2020- Continuing)
• Coordinator of B. Sc. program, Information Science and Telecommunication, GM University, India (2020- Continuing)
• Coordinator, M. Sc. program, Electronics and Telecommunication, GM University, India (2020- Continuing)
• Member, Syndicate, GM University, India (2020- Continuing)
• Coordinator, Dept. of Physics, KIIT Deemed to be University, India (2014-2019)

• H-Index : 24
• i10-index : 42
• Number of SCI and Scopus Index published journal papers : 42
• Number of Scopus Index conference publications : 47
• Number of other conference/peer reviewed publications : 40
• Number of patent filled: 1
• Number of completed projects : 1
• Number of ongoing project : 1
• Number of Ph. D. student awarded the degree: 6
• Number of Ph. D. student given the synopsis : 1
• Number of ongoing Ph. D. students : 6
• Number of M. Tech. project supervised : 2
• Number of M. Sc. project supervised : 12
• Number of published book chapters : 4 (3 in Springer, 1 in Wiley)
• Total impact factor of the published journals papers : > 80
• Total world wide citations of the published papers : ~1755
• Number of research laboratory established : 7
• Number of international journals in which worked as reviewer : 8
• Number of company coordinated for placement of UG/PG students of all stream : 55
• Number of teaching/research/official equipment/instrument developed : 20
• Best award got so far : Vidyasagar Award

• 2016-2019 : Studies on growth of laser induced hyperdoped black Si (LibSi) and their photoexcited carrier dynamics for cost effective and efficient photovoltaic applications. (Sponsors : SERB, Govt. of India, Amount : Rs. 29.92 Lakhs)
• 2017-2020 : Realization of cost effective second harmonic generation frequency resolved optical gating (SHG-FROG) using ZnO nanorods for diagnostics of ultrafast laser pulses in broad wavelength range of 400-2200 nm (Sponsor : Nano mission, Govt. of India,Amount : Rs. 24.59 Lakhs)

• Vidyasagar (Iswar Chandra Memorial) Award at 10th International Conference on Computing,Communication & Sensor Networking (2021)
• Best Poster Award at 2nd International Conference on Condensed Matter and Applied Physics, Bikaner, Rajasthan (2017)
• "A-Category faculty" at KIIT University (2017)
• Post Doctoral Fellowship from Max Born InstituteforNonlinear Optics and Short pulse spectroscopy, Berlin, Germany (August 2007-August 2013)
• Post Doctoral Fellowship from Raja Ramanna Center for Advance Technology (Govt. of India)(March 2007- June 2007 )
• Institute fellowship for pursuing Ph. D at Indian Institute of Technology, Kharagpur (July 2003- January 2007 )
• Institute fellowship for pursuing Master of Technology program at Indian Institute of Technology, Delhi ( July 1996- Dec. 1997 )
• Assistantship from Optical Society of America to attend conference abroad (2006)
• Assistantship from Dept. of Science and Technology to attend conference abroad (2006)
• Assistantship from Council of Scientific and Industrial Research (India) (2006)

• Convener, Popular Talk in Science for Celebration of National Science Day, 28th February, 2023, GM University, Sambalpur, India
• Co-Convener, National Seminar on Recent Trends in Ultrasonics, Acoustics and Advanced Functional Materials-2023 (RTUAAFM-23), 28th February, 2023, GM University, Sambalpur, India
• Convener, National webinar on "All about study abroad" by Career Development Cell, G.M. University, Sambalpur, India in association with iSchool Connect, Mumbai, 2021
• Co-Convener, 2 day webinar on "Advanced Materials for Energy Storage and Fuel Cell Applications" from 6th Sept to 7th sept, 2020 , School of Physics, GM University, Sambalpur, India
• Convener, WEBINAR on SEBI - INVESTOR AWARENESS PROGRAM on 25.08.2020 in association with Securities and Exchange Board of India (SEBI), School of Commerce and Internal Quality Assurance Cell ( IQAC) of G M University, Sambalpur, India
• Convener, Webinar series on "Role of Intellectually Property in creating Innovation Ecosystem for growth" on 10/06/2020, School of Physics, Gangadhar Meher University, Odisha, India
• Coordinator, 2 -Day Familiarization Workshop on Nanofabrication Technologies (INUP), KIIT University, Bhubaneswar, India
• Symposium Organizing Committee Member, 26th DAE-BRNS National Laser Symposium, 20-23 Dec. 2017, Bhaba Atomic Research Centre, Mumbai
• Co-Convener, 25th DAE-BRNS National Laser Symposium, 20-23 Dec. 2016, KIIT University, Bhubaneswar, India
• Local Organizing Committee member, 61st DAE-BRNS Solid state symposium, KIIT University, 26-30 Dec. 2016
• Local Organizing Committee member, ISCA Conference (Bhubaneswar chapter), KIIT University, 12-15 Dec. 2016
• Convener, Special Lecture series Advanced Photonic Devices and Applications, KIIT University, Bhubaneswar, India
• Local Organizing Committee member,2nd Int. Workshop Nonlinear Nanostructures for Ultrafast Laser Application, Max Born Institute,Berlin, Germany (2011)
• Local Organizing Committee member,Workshop on ZnO and TiO2 nanostructures, Max Born Institute, Berlin, Germany (2009)
• Local Organizing Committee member,Seminar onOptics of Photonic Band-gap Materials (PBG-2005), Department of Physics & Meteorology, IIT Kharagpur, India (2005)
• Local Organizing Committee member,DAE BRNS golden jubilee National Laser Symposium ( NLS-03),IIT Kharagpur, (2003)(Local Organizing Committee member)

• One day National Webinar on "Emerging Trends in the field of Materials Science", Gonzaga College of Arts & Science, 29 September 2021
• Recent Advances in Physics, FDP2,UGC-Human Resource Development Centre(HRDC) Sambalpur University, September 2021
• Online Refresher Course in Physics, FDP1, UGC-Human Resource Development Centre(HRDC) , Sambalpur University, February 2021
• Seminar on APJ Abdul Kalam's socio-scientific contribution, Odisha Cultural Society, Sambalpur, 15 Oct 2021(Invited Speaker)
• 2nd International Conference on Condensed Matter and Applied Physics, Bikaner, Rajesthan (2017)
• 26th DAE-BRNS National Laser Symposium, 20-23 Dec. 2017, Bhaba Atomic Research Centre, Mumbai
• Faculty development programme at KIIT University June 2016
• ISCA Conference, SV University, Tirupati, 03-07 January (2017)(Invited speaker)
• QIP Short Term Course on Industrial Applications of Terahertz Radiation,IIT Kharagpur, 27 March-2 April 2017(Invited speaker)
• Solid state symposium, KIIT University, 26-30 Dec. 2016
• ISCA Conference, KIIT University, 12-15 Dec. 2016
• National Laser Symposium, KIIT University, 20-23 Dec. (2016) (Poster presentation)
• Faculty development programme at KIIT University June 2015
• International Workshop on Emerging Area in Photonics and Future Applications, CSIR-CGCRI Kolkata 7-12 Dec. (2015)
• Faculty development programme at KIIT University June 2014
• One day national workshop on thin film technology, IMMT, Bhubaneswar (2014)(Invited speaker)
• DAE BRNS Theme meeting on ultrafast sciences, IIT Kharagpur, Oct 24-26, (2013)(Invited speaker)
• National Laser Symposium 21, Bhaba Atomic Research Centre, Mumbai, India (2013)(Invited speaker)
• 13th International Symposium on Laser Precision Microfabrication, The Catholic University of America, WashingtonDC, 12-15 June ( 2012)(Invited speaker)
• Conference on Lasers and Electro-optics, Baltimore, USA, 1-6 May, (2011).(Invited speaker)
• International Conference on Theoretical and Experimental Physics, Kharagpur, India, 1-2 December (2011)(Invited speaker)
• Conference on Lasers and Electro-optics / Quantum Electronics and Laser Science Conference, San Jose, California, USA, 15-21 May (2010)(Invited speaker)
• Laser Optics Berlin :International Trade Fair and Convention for Optical & Laser Technologies, Berlin, Germany, 19-21 March(2010)(Invited speaker)
• Conference on Lasers and Electro-optics, MÜnich, Germany, 15-19 June (2009)
• Topical meeting on Photorefractive Materials, Effects, and Devices, Bad Honnef , Germany, 11-14 June (2009)(Invited speaker)
• Laser Optics Berlin :International Trade Fair and Convention for Optical & Laser Technologies, Berlin, Germany, March(2008)(Invited speaker)
• Conference on Lasers and Electro-optics / Quantum Electronics and Laser Science Conference, Long Beach, California, USA, 21-26 May (2006)(Invited speaker)
• International workshop on Emerging Areas of Fiber optics and future applications, Central Glass and Ceramic Research Institute, Kolkata, India, December, (2005)
• Winter School on Nonlinear optics: Theory and Application, Bharathidasan University, Tiruchirapally, India, 1-13 December (2003).
• Fourth DAE-BRNS National Laser Symphosium, Bhaba Atomic Research Center, Mumbai, India 10-13 January (2005)(Poster presentation)
• National Laser Symposium, Raja Ramanna Center for Advance Technology, Indore, India, 5-8 December (2006)(Poster presentation)
• Short term course on " Generation and characterization of ultrashort pulses" Raja Ramanna Center for Advance Technology, Indore, India, 3-4 December (2006)

• Life time member, Indian Laser Association
• Life member, Indian Science Congress
• Patron Member, Odisha Physical Society

• Laser & Adv. Photonics Research Lab. at KIIT Deemed to be University, Bhubaneswar, India
• Agro Physics & Technology Lab at G M University, Sambalpur, Odisha, India,
• Nonlinear optics Lab. at G M University, Sambalpur, Odisha, India
• Laser Science and Technology Research Lab at G M University, Sambalpur, Odisha, India
• Commercializable product research innovation lab at at G M University, Sambalpur, Odisha, India
• Nanoscience and Technology research lab at G M University, Sambalpur, Odisha, India
• Agro-Physics Lab.

I. Published Journal Papers

A. 2020-Till date (@ G M University, Sambalpur, Odisha, India)

1. Growth of high-density Zinc Oxide (ZnO) nanoflowers in all aqueous two-step method and their application in second harmonic generation of femtosecond laser, OK Swarupa, S Sahu, S Sahoo, PK Sahoo, AK Pradhan, JK Sarkar, PK Datta, SK Das, Optical Materials 157, 116240 (2024)
2. Study of Variation in Optical Properties and Dispersion Parameters of Fe-Doped TiO2 Nanopowders, D. Apta, S.K. Das, & M. Devi, Trans. Electr. Electron. Mater. (2023),: https://doi.org/10.1007/s42341-023-00482-4
3. Fabrication of a Si/ZnO Heterojunction Diode Using a Nonconventional Sol–Gel Method, M Alrefaee, U P. Singh · S K Das, Journal of Electronic Materials, 52, 4369–4374 (2023)
4. Second harmonic generation of femtosecond laser pulses of central wavelength 1000 nm, 1100 nm and 1300 nm using ZnO nanorods, M Alrefaee, R Panda, A S Thakur, P K Sahoo, R Das, P K Datta, S K Das, Optical and Quantum Electronics,55,50 (2023)
5. Growth of Aluminum Doped Zinc Oxide Nanostructure Thin Films by Nonconventional Sol‐Gel Method, M Alrefaee, UP Singh, SK Das, Macromolecular Symposia, 402(1), 2100350 (2022)
6. USB Digital Microscope Endoscope Camera–An Effective Tool for Quick Morphological Characterization of Laser‐induced Microstructures, PC Singh, SK Das, Macromolecular Symposia, 402(1), 2100348, 2022
7. Generation of microstructures and extreme sub-wavelength laser-induced periodic structures on the Si surface using N2 nanosecond pulsed laser for the reduction of reflectance, PC Singh, SK Das, Pramana, 95(1), 1-7(2021)
8. Second Harmonic Generation of Femtosecond Laser Pulses of Central Wavelength 1000 nm, 1100 nm and 1300 nm Using ZnO Nanorods, Maher Alrefaee, Rudrashish Panda, Pratap Kumar Sahoo, Ritwick Das, Prasanta Kumar Datta, Susanta Kumar Das, Optical and Quantum Electronics, 55(1), 1-8, 2021

B. 2019-2013 (@KIIT Deemed to be University, Bhubaneswar, Odisha, India)

9. Enhancement of photocatalytic activity by femtosecond-laser induced periodic surface structures of Si, P. Satapathy, A. Pfuch, R. Grunwald, and S. K. Das, Journal of Semiconductors,41(3),000000(2020),http://www.jos.ac.cn/fileBDTXB/journal/article/jos/newcreate/19080021.pdf
10. Growth of ZnO nanoparticles prepared from cost effective laboratorygrade ZnO powder and their application in UV photocatalytic dyedecomposition, Rajashree Sahoo · Atal Mundamajhi · Susanta Kumar Das, Journal of Materials Science: Materials in Electronics, 30, 4541–4547 (2019)
11. Super-wavelength, Wavelength and Sub-wavelength Laser Induced Periodic Surface Structures on Zn and Their Energy Dispersive X-ray Analysis, A. Mundamajhi, P. C, Singh, S. K. Das, Applied Optics, 58, 5451,(2019)
12. Observation of Continuous and Non-continuous Laser Induced Periodic Structures on Silicon, Pravakar Satapathy, Rudrashish Panda, Rajashree Sahoo, Mukesh Kumar Shukla, Lizina Khatua, Pratap Kumar Sahoo, Ritwick Das and Susanta Kumar Das, Journal of Laser Micro/Nanostructring 13, 146, (2018)
13. Visible light photocatalytic dye decomposition behaviour of solid state reaction grown Zn2TiO4 nanoparticles, Lizina Khatua, Rajashree Sahoo, Pravakar Satapathy, Rudrashish Panda, Susanta Kumar Das, Journal of Semiconductors, 39 123002(2018)
14. Efficient UV photocatalytic dye decomposition activity with cost effective solid state reaction grown Zinc Orthotitanate (Zn2TiO4) nanoparticles, L. Khatua, R. Panda, A. K. Nayak, A. Singh, P. K. Sahoo, D. Pradhan, U. P. Singh, S. K. Das, Journal of Alloys and Compounds, 764, 895–900 (2018)
15. Growth of significantly low dimensional Zinc Orthotitanate (Zn2TiO4) nanoparticles by solid state reaction method, L. Khatua, R. Panda, A. Singh, A. K. Nayak, P. Satapathy, D. Pradhan, P. K. Sahoo, S K S Parashar, S. K. Das, Science of Sintering, 50, 133-138, (2018)
16. Femtosecond laser excited second harmonic and multiphoton absorption induced UV luminescence generation behaviour of ZnO nanofibers, R Panda, A. Singh, R. Samal, S. Bhattacharya, P. K. Sahoo, P. K. Datta, S. K. Das, Optik- International Journal for Light and Electron Optics,154, 320–324 (2018)
17. Growth and characterization of semi-organic nonlinear optical (NLO) guanidinium trichloroacetate (GTCA) single crystal, P. Karuppasamy, M. S. Pandian, P. Ramasamy, S.K. Das, Optik - International Journal for Light and Electron Optics, 156, 707–719 (2018)
18. Fringe resolved autocorrelator for characterization of ultrashort laser pulses using second harmonics of ZnO nanorods, R. Panda. S. K. Das, Optics Communications, 402, 398-400 (2017)
19. Second harmonic generation of femtosecond pulses using ZnO nanorods grown by chemical bath deposition with drop casted seed layer, R. Panda, S. Bhattacharya, R. Samal, A. Singh, P.K. Sahoo, P.K. Datta, S.K. Das, Journal of Nonlinear Physics and Materials, 25, 1650029 (2016)
20. Highly periodic laser-induced nanostructures on thin Ti and Cu foils for potential application in laser ion acceleration Susanta Kumar Das, Alexander Andreev, Hamza Messaoudi, Julia Braenzel, Matthias Schnuerer, and Ruediger Grunwald, Journal of Applied Physics, 119, 113101 (2016)
21. Non-Instantaneous Polarization Dynamics in Dielectric Media, M. Hofmann, J. Hyyti, S. Birkholz, M. Bock, S. K. Das, R. Grunwald, M. Hoffmann, T. Nagy, A. Demircan, M. Jupé, D. Ristau, U. Morgner, C. Brée, M. Woerner, T. Elsaesser& G. Steinmeyer, Optica, 2, 2334-2336,(2015)
22. ZnO nanorods for efficient third harmonic UV Generation, S. K. Das, F. Güell, C. Gray, P. K. Das, R. Grunwald, and E. McGlynn, Optical Materials Express, 4, 702 (2014)

C. 2013-2007 (@Max Born Institute, Berlin, Germany)

23. Multiphoton excitation of surface plasmon-polaritons and scaling of nanoripple formation in large bandgap materials, S. K. Das, H. Messaoudi, A. Debroy, E. McGlynn, and R. Grunwald, Optical Materials Express, 3, 1705 (2013).
24. Ultrashort highly localized wavepackets, M. Bock, S. K. Das, and R. Grunwald, Opt. Express , 20, 12563-12578 (2012)
25. Reconfigurable wavefront sensor for ultrashort pulses, M. Bock, S. K. Das, C. Fischer, M. Diehl, P. Börner, and R. Grunwald, Opt. Lett.37, 1154-1156 (2012).
26. Highly efficient THG in TiO2 nanolayers for third-order pulse characterization S. K. Das, C. Schwanke, A. Pfuch, W. Seeber, M. Bock, G. Steinmeyer, T. Elsaesser, and R. Grunwald, Opt. Express 19, 16985- 16995 (2011)
27. Formation of laser-induced periodic surface structures on fused silica upon multiple double-femtosecond-laser-pulse irradiation sequences,M. Rohloff, S.K. Das, S. Höhm, and R. Grunwald, A. Rosenfeld, J. Krüger and J. Bonse Journal of applied physics, 110, 014910(2011)
28. Extended-area nanostructuring of TiO2 with femtosecond laser pulses at 400 nm using a line focus, S K Das, Kiran Dasari, Arkadi Rosenfeld and Ruediger Grunwald, Nanotechnology, 21, 155302 (2010)
29. Multiphoton-absorption induced UV luminescence using low energy femto-second pulses, S K Das, M Biswas, M Bock, E McGlynn and R Grunwald Journal of applied physics, 108, 043107 (2010)
30. Programmable ultrashort-pulse flying images. M Bock, S K Das, R Grunwald, Opt. Express 17, 7465 (2009)
31. Femtosecond-laser induced quasi-periodic nanostructures on TiO2 surfaces, S K Das, D Dufft, A Rosenfeld, J Bonse, and R Grunwald , Journal of Applied Physics, 105,084912 (2009)
32. Femtosecond laser-induced periodic surface structures revisited: a comparative study on ZnO, D. Dufft, A. Rosenfeld, S K Das, R. Grunwald, and J. Bonse, Journal of Applied Physics, 105, 034908 (2009)
33. Nonlinearly-coupled, gain-switched Nd:YAG second harmonic laser with variable pulse width, A Ray, S K Das, and P K Datta, Applied Optics, 48, 765 (2009)
34. Efficient second harmonic generation in ZnO nanorod arrays with broadband ultrashort pulses, S K Das,M Bock, C O'Neil, R Grunwald, K Lee, H Lee, S Lee, F Rotermund Applied Physics Letters, 93, 181112 (2008)
35. Spectral and temporal response of liquid-crystal-on-silicon spatial light modulator. M Bock, S K Das, Rüdiger Grunwald, Applied Physics Letters,92, 151105 (2008).

D. 2007-2003 (@IIT Kharagpur, India

36. Development of an efficient coherent optical source at 6.04 μm, S. Mukhopadhyay, S K Das, M. Banik, A. Saha, P. K. Datta, J. P Nilaya and D J. Biswas, Infrared Physics & Technology 51 80–82 (2007)
37. Acousto-optic modulator stabilized low threshold mode-locked Nd:YVO4 laser, A Ray, S K Das, S Mukhopadhyay and P K Datta ,Applied Physics Letters , 89, 221119 (2006)
38. Direct third harmonic generation due to quadratic cascaded processes in periodically poled crystal, S K Das, S. Mukhopadhyay, N. Sinha, A. Saha, P. K. Datta, S. M. Saltiel, L. C. Andreani , OpticsCommunications (Elsevier) ,262, 108-113 (2006)
39. Growth of Urea doped Benzophenone single crystal for nonlinear optical application, M.Arivanandhan, C.Sanjeeviraja, K.Sankaranarayanan, S K. Das, G. K.Samantaand P K Datta,Optical Materials (Elsevier) 28, 324-330, (2006)
40. Critical remarks on paper–Optical frequency doubling in microtube Czochralski (µT-CZ) grown benzophenone single crystals, M. Arivanandhan et al, J.Crystal Growth 281,(2005),596- 603 P K Datta, S. K. Das, S Mukhopadhyay and N Sinha, Journal of Crystal Growth (Elsevier), 291, 314-315 (2006)
41. Critical remarks on paper -Ethyl p-amino benzoate(EPAB) : A novel organic non-linear optical material for optical devices", M. Arivanandhan et al, Optics Communication, 251, (2005), 172-178’, P K Datta, S K Das, S Mukhopadhyay and N Sinha ,Optics communications, 263, 350(2006)
42. Realization of inverse saturable absorption by intra-cavity third harmonic generation for efficient nonlinear mirror mode-locking, P. K. Datta, S. Mukhopadhyay, G. K. Samanta, S K Das and A. Agnesi , Applied Physics Letters (AIP) , 86, 151105 (2005)
43. Enhancement of stability and efficiency of a nonlinear mirror mode-locked Nd:YVO4 oscillator by an active Q-switch, P K Datta, S Mukhopadhyay, S K Das, L Tartara, A Agnesi and V Degiorgio.,Optics Express (OSA) 12, 4041-4046 (2004)
44. Diode array pumped, nonlinear mirror Q-switched and mode-locked Nd:YVO4 laser – a good tool for Powder SHG measurement, P. K. Datta, C. Basu, S. Mukhopadhyay, S K Das, G. K. Samanta and A Agnesi, Pramana – The Journal of Physics (IAS) 63(5), 1003-1010 (2004)

II. Published Book Chapters

A. 2019-2013 (@KIIT Deemed to be University, India)

1. Femtosecond-laser induced nanostructures in TiO2 , S. K. Das, H. Messaoudi, K. Dasari, W. Seeber, and R. Grunwald, Progress inNonlinear Nanooptics (Eds: M. Sakabe, C. Lienau, R. Grunwald) Springer, ISBN: 978-3-319-12216-8 (Print), 73-84 (2015).
2. Comparison of linear and nonlinear optical properties of ZnO nanorods, S. K. Das, F. Güell, C. Gray, D. Byrne, P. K. Das, R. Grunwald, and E. McGlynn, Progress in Nonlinear nanooptics, (Eds: M. Sakabe, C. Lienau, R. Grunwald) Springer, ISBN: 978-3-319-12216-8 (Print), 193-206 (2015)

B. 2013-2007 (@Max Born Institute, Germany)

3. Femtosecond-laser induced periodic surface structures for surface enhanced Raman spectroscopy of biomolecules, H. Messaoudi, S. K. Das, J. Lange, F. Heinrich, S. Schrader, M. Frohme, and R. Grunwald, Progress inNonlinear nanooptics, (Eds: M. Sakabe, C. Lienau, R. Grunwald) Springer, ISBN: 978-3-319-12216-8 (Print), 207-219 (2015).
4. Adaptive shaping of nondiffracting wavepackets for applications in ultrashort pulse diagnostics, M. Bock, S. K. Das, C. Fischer, M. Diehl, P. Börner, and and R. Grunwald, Non-diffracting waves,(Eds. H. E. Hernandez-Figueroa, M. Zamboni-Rached, E. Recami) , J. Wiley, Berlin, Oct 2013, online published: Oct. 3, 2013 (Kindle edition).

III.Conference proceedings/other Peer Reviewed Reports

A. 2020-Till date (@ G M University, India)

1. Synthesis and Z-scan for the characterization of aluminum doped zinc oxide thin films using femtosecond laser pulses, RK Biswal, R Panda, OK Swarupa, N Shadangi, SK Das, AIP Conference Proceedings 3198 (1) (2025)
2. Effect of annealing temperature on photocalaytic dye degradation study of TiO2 nanoparticles prepared by non-conventional sol-gel technique, Debabandana Apta, Susanta Kumar Das, Maya Devi, Materialstoday Proceedings, (In press, https://doi.org/10.1016/j.matpr.2023.05.498) (2023)
3. Efficient photocatalytic dye decomposition using TiO2 nanostructured thin film grown by non-conventional sol-gel technique, D Apta, M Devi, SK Das, Materials Today: Proceedings, 60(2),1172-1174,2022
4. Angular birefringence phase matching behaviour of Lithium Triborate (LBO) crystal for second harmonic generation in broad wavelength range, OK Swarupa, RK Biswal, PK Das, SK Das, Materials Today: Proceedings, 62(10), 6221-6226,2022
5. Theoretical simulation on SHG in broad wavelength range using ZnO nanorods, RK Biswal, OK Swarupa, R Panda, SK Das, Materials Today: Proceedings, 62(10), 6153-6155, 2022
6. High speed laser induced periodic structure generation using femtosecond laser on surface of titanium, A Mundamajhi, SKS Parashar, SK Das, IOP Conference Series: Materials Science and Engineering, 1124(1), 012003, 2021
7. Study of adsorption of methylene blue in aqueous solution onto activated carbon prepared using low cost domestic oven based heating system, Sinmay Sahoo, Maya Devi, Susanta Kumar Das, IOP Conference Series: Materials Science and Engineering, 1121(1), 012001, 2021
8. Growth Of ZnO Nanostructured Thin Films By Non Conventional Sol-Gel Method And The Effect Of Annealing Temperature On Its Properties, M Alrefaee, UP Singh, SK Das, Journal of Physics: Conference Series, 1973(1), 012069, 2021
9. Photocatalytic study of Methyl Orange dye in UV exposure by using ZnO nanoparticles, R. Sahoo, L. Khatua, S. K. Das, Material Today Proceedings,33, 5592-5594 (2020)
10. Energy Dispersive X-Ray Spectroscopy Study Of Compound Semiconductor Zinc Orthotitanate Prepared By Solid State Reaction Method, L. Khatua, S. K. Das. Material Today Proceedings, 33, 5628-5631 (2020)

B. 2019-2013 (@KIIT Deemed to be University, India)

11. Ultraviolet photocatalytic dye decomposition of malachite green dye by using cost effective ZnO nanoparticles,, R. Sahoo, S. K. Das, AIP Conf. Proceedings, 2166, 020021 (2019).
12. Effect of repetition rate on morphology of generated microstructure on silicon surface using low cost N2 laser in air medium, P. C. Singh, S. K. Das, AIP Conf. proceedings, 2166, 020022 (2019)
13. Laser processed micro-groove based black Si, Pravakar Satapathy, P. Chandrakanta Singh, Pratap Kumar Sahoo, Ritwick Das, Udai Pratap Singh, Susanta Kumar Das, AIP Conference Proceedings 2105, 020025 (2019).
14. Growth of Thin Film Containing High Density ZnO Nanorods with Low Temperature Calcinated Seed Layer, R. Panda et. al.,American Institute of Physics (AIP) Conference Proceedings, 1953, 030118 (2018).
15. Comparison of Performance of Dye-sensitized solar cell Prepared with Uncalcinated and Calcinated ZnO-TiO2 mixed phase nanoparticles, L. Khatua et. al., American Institute of Physics (AIP) Conference Proceedings,1953, 030101 (2018)
16. Use of Photovoltaic Detector for Photocatalytic Activity Estimation, S. K. Das, et. al., ., American Institute of Physics (AIP) Conference Proceedings, 1953, 060024 (2018)
17. Coherence length and efficiency of SHG study of multiple wavelength ultrafast laser pulses with ZnO nanorods, S. K. Das, R. Panda, L. Khatua, P. S. S. Rao, P. Satapathy, Proceedings ofNational Laser Symposium, 20-23 Dec. (2017)
18. Analysis of UV Photocatalytic activity using Laser based monitoring system, P. S. S. Rao, R. Panda, L. Khatua, P. Satapathy, S. K. Das, Proceedings ofNational Laser Symposium, 20-23 Dec. (2017)
19. Generation of simultaneous wavelength and sub-wavelength laser induced periodic structures on metal surface, L. Khatua, A.C. Das, R. Panda, A. Singh P. Satpathy, P.K Sahoo, P.K. Datta, S.K. Das, National Laser Symposium, 20-23 Dec. (2016)
20. Second harmonic generation using ZnO nanofibers, R. Panda, A. Singh, S. Bhattacharya, R. Samal, P.K. Sahoo, P.K. Datta, S.K. Das, National Laser Symposium, 20-23 Dec. (2016)
21. Recycling ability study of photocatalytic action of ZnO-TiO2 nanocomposites, R. Panda, A. K. Nayak, P. Satapathy, R. Samal, A. Singh, L. Khatua, D. Pradhan, P. K. Sahoo, S. K. S. Parashar and S. K. Das, International Conference on Materials Science and Technology, 1-4, March (2016).
22. Growth of significantly small dimensional ZnO-TiO2 nanocomposites by solid state reaction method, Lizina Khatua, Rudrashis Panda, Avanendra Singh,Rudranarayan Samal, Pravakar Satpathy, Pratap Kumar Sahoo, S K S Parashar, Susanta Kumar Das, PNS 16,International Conference on Frontiers in Nanoscience and Technology (COCHIN NANO), Feb. 20-23 2016.
23. Efficient photocatalytic dye decomposition with ZnO-TiO2 nanocomposites, Pravakar Satapathy, Arpan Kumar Nayak, Rudrashish Panda, Avanendra Singh, Rudranarayan Samal, Lizina Khatua, Debabrata Pradhan, Pratap Kumar Sahooand Susanta Kumar Das, PNP 13, International Conference on Frontiers in Nanoscience and Technology (COCHIN NANO), Feb. 20-23 (2016).
24. Efficient second harmonic generation in ZnO nanorods grown in chemical bath technology using drop casted seed layer prepared by domestic induction heater, R. Panda, S. Bhattacharya, R. Samal, A. Singh, P. K. Sahoo, P. K. Datta, S. K. Das, International Conference on Frontiers in Materials Science & Technology (ICFMST), Berhampur, India, Dec 10-12 (2015).
25. Growth of high density ZnO nanorods by chemical bath technique using domestic induction heater based drop-casted seed layer and their optical characterization, R. Samal, A. Singh, R. Panda, , A. C. Das, L. Khatua, P. K. Sahoo, P. K. Datta, U. P. Singh, S. K. Das, International Conference on Frontiers in Materials Science & Technology (ICFMST), Berhampur, India, Dec 10-12 (2015).
26. Non-instantaneous polarization decay in dielectric media, M. Hofmann, C. Brée, M. Hoffmann, A. Demircan, T. Nagy, D. Ristau, U. Morgner, S. Birkholz, S. K. Das, M. Bock, R. Grunwald, J. Hyyti, T. Elsaesser, and G. Steinmeyer, Ultrafast Phenomena, Okinawa, Japan, July 7-11 (2014). 27. Nature's wonder : Laser induced nanostructure, One day workshop on thin film technology, S.K. Das, IMMT, Bhubaneswar (2014).
28. THG of ZnO nanorods for efficient third orderinterferometric FROG, S. K. Das, F. Güell, C. Gray, D. Byrne, P. K. Das, R. Grunwald, E. McGlynn, and G. Steinmeyer, , CLEO/QELS, STu3E.5, San Jose, CA, USA, June 8-13 (2014).
29. Femtosecond-laser induced nanostructuring for surface enhanced Raman spectroscopy, H. Messaoudi, S. K. Das, J. Lange, F. Heinrich, S. Schrader, M. Frohme, and R. Grunwald Proc. SPIE 8972-17, Photonics West, San Francisco, February 1-6 (2014).
30. Photocatalytic activity of femtosecond laser induced nanomaterials,S. K. Das, C. Patzek, R. Grunwald, T. Toelke,C. Marschner, A. Pfuch, W. Seeber, DAE BRNS Theme meeting on ultrafast sciences, IIT Kharagpur, Oct 24-26, (2013)

C. 2013-2007 (@Max Born Institute, Germany)

31. Laser induced periodic surface structures in thin metal foils, H. Messaoudi, S. K. Das, A. Andreev, M. Schnürer, and R. Grunwald, DPG Frühjahrstagung 2013, Sektion Kurzzeitphysik (Spring Meeting of DPG, Jena, Germany, February 25 - March 1 (2013).
32. Nonlinear optical mechanism of forming periodical nanostructures in large bandgap dielectrics, R. Grunwald, S. K. Das, A. Debroy, E. McGlynn, and H. Messaoudi, , International Workshop on Ultrafast laser modification of materials, Cargèse, Corsica, France, April 14-19 (2013).
33. MEMS axicons for nondiffracting line shaping of ultrashort pulses, A. Treffer,S. K. Das, M. Bock, J. Brunne, U. Wallrabe, and R. Grunwald, Photonics West, San Francisco, USA, February 2-7 (2013).
34. Photocatalytic properties of TiO2 nanotubes,A. Pfuch, F. Guell, T. Toelke, S. K. Das, H. Messaoudi, E. McGlynn, W. Seeber, and R. Grunwald, Photonics West, San Francisco, USA, February 2-7 (2013).
35. Temporal self-reconstruction of few-cycle nondiffracting wavepackets, S. König, M. Bock,S. K. Das, A. Treffer, and R. Grunwald, Photonics West, San Francisco, USA, February 2-7 (2013).
36. High density femtosecond-laser induced periodic nanostructures in metals, H. Messaoudi, S. K. Das, W. Seeber, and R. Grunwald, 21st DAE-BRNS National Laser Sysmposium, , Bhabha Atomic Research Centre, Mumbai, India, Febr. 6-9, (2013)
37. H. Messaoudi, S. K. Das, M. Bock, E. McGlynn, D. Byrne, F. Güell, and R. Grunwald, Ultrashort pulse characterization utilizing highly nonlinear ZnO nanostructures, 5th Szeged International Workshop on Advances in Nanoscience 2012 (SIWAN5), Szeged, Hungary, 24-27 October, (2012).
38. Quantitative estimation of intensity dependent periods of subwavelength laser-induced ripples,S. K. Das, A. Rosenfeld, H. Messaoudi, M. Bock, M. Tischer, and R. Grunwald, 13th International Symposium on Laser Precision Microfabrication, The Catholic University of America, WashingtonDC, 12-15 June ( 2012)
39. First Experimental Evidence for a Non-instantaneous Lifetime of Nonlinear Optical Chi(3) Effects, S. K. Das, M. Bock, R. Grunwald, B. Borchers, G. Steinmeyer, D. Ristau, T. Vockerodt, and U. Morgner, Lasers, Sources and Related Photonic Devices, 29 January - 3 February 2012, Rancho Bernardo Inn, San Diego, California, USA.
40. Few-cycle highly localized wavepackets on demand with superior temporal transfer, M. Bock, S. K. Das, and R. Grunwald, QM4E.2, CLEO/QELS, May 6-11 (2012) San Jose, CA, USA.
41. Adaptive characterization of few-cycle wavepackets with high-pulse-fidelity time-wavefront sensors, M. Bock, P. Börner, M. Diehl, C. Fischer, S. K. Das, and R. Grunwald, CLEO/QELS, May 6-11 (2012) San Jose, CA, USA .
42. Non-instantaneity of chi^(3) nonlinear optical effects, S. K. Das, M. Bock, R. Grunwald, B. Borchers, J. Hytti, G. Steinmeyyer, D. Ristau, T. Vockerodt, and U. Morgner,CM1J.4, CLEO/QELS, May 6-11 (2012) San Jose, CA, USA .
43. Characterization of fast-switching low-dispersion MEMS-based micro-axicons for applications in ultrashort-pulse nanostructuring, A. Treffer, J. Brunne, S. K. Das, M. Bock, H. Messaoudi, U. Wallrabe, and R. Grunwald, Deutsche Physikalische Gesellschaft, Frühjahrstagung Sektion AMOP, Stuttgart, Germany, March 12-16, 2012.
44. Evidence for non-mass-transfer mechanism in fs-laser formation of sub-200 nm structures on sapphire, S. K. Das, F. Guell, H. Messaoudi, M. Bock, and R. Grunwald, CM4K.4, CLEO/QELS, May 6-11 (2012) San Jose, CA, USA.
45. Interferometric FROG for few-cycle pulse characterization and as an ultrafast spectroscopy tool, G. Steinmeyer, G. Stibenz, S. K. Das, R. Grunwald, and M. B. Raschke, Frontiers in Optics 2011 / Laser Science XXVII, October 16-20 (2011).
46. Nanostructured material for photonic applications, S. K. Das, R. Grunwald, A. Rosenfeld, M. Bock and G. Steinmeyer, International Conference on Theoretical and Applied Physics, 1-2 Dec (2011).
47. Nano-indentation study of femtosecond laser induced periodic surface structures on dielectrics and semiconductors, M. Rohloff, A. Richter, K. Dasari, R. Hertmanowski, S. K. Das, A. Rosenfeld, and R. Grunwald,2nd Int. Workshop Nonlinear Nanostructures for Ultrafast Laser Application, May 19-20, Berlin, Germany, Technical Digest, Poster 7 (2011)
48. Enhanced third order nonlinearity in nanocrystalline TiO2 thin films, S. K. Das, C. Schwanke, M. Bock, A. Pfuch, W. Seeber, and R. Grunwald, 2nd Int. Workshop Nonlinear Nanostructures for Ultrafast Laser Application, May 19-20, Berlin, Germany, Technical Digest, Poster 3 (2011)
49. Review on pararameter controlling LIPSS of TiO2, S. K. Das, M. Rohloff, A. Rosenfeld, K. Dasari, J. O. Bonse, A. Pfuch, W. Seeber, and R. Grunwald, 2nd Int. Workshop Nonlinear Nanostructures for Ultrafast Laser Application, May 19-20, Berlin, Germany, Technical Digest, Paper Oral6(2011)
50. Formation of laser-induced periodic surface structures upon multiple irradiation sequences using double femtosecond laser pulses, S. Höhm, M. Rohloff, S.K. Das, J. Krüger, J. Bonse, A. Rosenfeld, Symposium J : Laser materials processing for micro and nano applications of the E-MRS, France (2011)
51. Formation of laser-induced periodic structures in TiO2 crystals depending on the surface quality, S. K. Das,M. Rohloff, A. Pfuch, W. Seeber, A. Rosenfeld, and R. Grunwald, Pres. number: CTuAA2, CLEO Baltimore, USA (2011).
52. Enhanced surface third harmonic generation in TiO2 nanolayers, S. K. Das, C. Schwanke, A. Pfuch, W. Seeber, M. Bock, R. Grunwald, Pres. number: JThB52, CLEO Baltimore, USA (2011).
53. Adaptive wavefront diagnostics of ultrashort pulses with programmable microaxicons, M. Bock, C. Schwanke, S. K. Das, R. Beutner, M. Diehl, C. Fischer, and R. Grunwald, CF.P.13, CLEO Munich, Germany (2011) .
54. Femtosecond laser-induced periodic surface structures: importance of transient excitation stages, J. Bonse, J. Krüger, M. Rohloff, S.K. Das, S. Höhm, A. Rosenfeld, SPIE Optics and Optoelectronics, Prague, Czech Republic, April. 18-21 (2011)
55. Scattering-controlled femtosecond-laser induced nanostructuring of TiO2 thin films, S. K. Das, M. Bock, and R. Grunwald, Proc. SPIE 7925-42 (2011),SPIE Photonics West, San Francisco, USA, Jan. 22-Jan. 27 (2011)
56. Adaptive shaping of complex pulsed nondiffracting light fields, M. Bock, S. K. Das, and R. Grunwald, Proc. SPIE 7950, 795009,SPIE Photonics West, San Francisco, USA, Jan. 22-Jan. 27 (2011)
57. Light bullets, light rings and flying images: adaptive spatial modulation of uktrashort laser pulses, R. Grunwald, M. Bock, and S. K. Das, KIRAN, A Bulletin of the Indian Laser Association, 21 (3), 21-23, National Laser Symposium (NLS-19), Raja Ramanna Centre for Advanced Technology, Indore, India, Dec. 1-4 (2010)
58. Multi-photon excited UV luminescence of ZnO nanorods after irradiation with few-nJ femtosecond laser pulses, S K Das, D. Byrne, E. McGlynn, M. Bock, and R. Grunwald, JThE16,CLEO USA (2010).
59. Laser-induced periodic nanostructures on ZnO surfaces with a patterned beam in water environment, S K Das, M. Bock, A. Rosenfeld, and R. Grunwald, CMR3, CLEO USA (2010)
60. Femtosecond-laser induced nanostructures in fused silica fibers, S. K. Das, M. Tischer, U. Neumann, J. T. Preusse, and R. Grunwald Laser Optics Berlin, (2010) .
61. Programmable supercollimated ultrashort pulses, M. Bock, S. K. Das, A. Richter, J. T. Preusse, and R. Grunwald Laser Optics Berlin, (2010).
62. Generation of extended-area femtosecond laser induced periodic nanostructures on TiO2 by moving samples through a line focus, K. Dasari, S. K. Das, A. Rosenfeld, and R. Grunwald, Proc. SPIE 7586-20,SPIE Photonics West, January 23-28, San Francisco, USA (2010) .
63. Femtosecond-laser induced sub-200 nm structures in TiO2, S. K. Das, D. Dufft, M. Bock, A. Rosenfeld, J. Bonse, and R. Grunwald, paper JWA1, CLEO/IQEC USA (2009).
64. Highly-efficient second harmonic generation in ZnO nanorods with ultrashort pulses, S K Das, M Bock, C O'Neill, R Grunwald, K M Lee, H Woon Lee, S Lee, and F Rotermund, paper IML6,CLEO/IQEC USA (2009).
65. Ultrashort-pulsed nondiffracting images, M. Bock, S. K. Das, and R. Grunwald, paper CME4, CLEO/IQEC USA (2009).
66. Strong multiphoton-absorption-induced UV luminescence from ZnO nanorod arrays grown by vapour-liquid-solid mechanism, S. K. Das, M. Bock, E. McGlynn, M. Biswas, and R. Grunwald, paper EI.P.11, CLEO Europe – EQEC (2009).
67. Quantum nondiffracting pulses, M. Bock, S. K. Das, and R. Grunwald, CLEO Europe – EQEC (2009).
68. Mechanisms of Femtosecond-Laser Induced Surface Structuring of Zinc Oxide Crystals , D. Dufft, A. Rosenfeld, S K Das, R. Grunwald, and J. Bonse, paper CM4.1,CLEO Europe – EQEC (2009).
69. Direct third and forth harmonic generation through effective nonlinearity in periodically poled LiNbO3, S. K. Das, P. K. Datta, and S. M. Saltiel, Photorefractive Materials, Effects, and Devices, Control of Light and Matter, paper P2-18, Bad Honnef, Germany (2009).
70. Random laser based on Ag-nanoparticle suspension prepared by wet chemical method , S. K. Das, C.P. Singh, V. Shukla, T.S. Dhami, K.S. Bindra, Eighth DAE-BRNS National laser symposium, New Delhi, India,NLS-8, 7-10 January (2009), paper code-P009
71. Programmable ultrashort-pulse localized waves,R. Grunwald, M. Bock, S. Huferath, S K Das, S. Osten, P. Staudt, and G. Stibenz, PIERS Progress in Electromagnetics Research Symposium, Cambridge, USA, Workshop on Localized Waves, CD-ROM, Abstracts, 533-534 (2008)
72. Noncollinear autocorrelation with radially symmetric nondiffracting beams,S. Huferath-von Luepke, V. Kebbel, M. Bock, S K Das and R. Grunwald, SPIE Optics+Photonics / Optical Engineering + Applications / Advanced Metrology Conference, San Diego, USA, 2008, in: Proc. SPIE 7063-36 (2008)
73. High fidelity ultrashort-pulse transfer with spatial light modulators,M. Bock, S K Das, R. Grunwald, S. Osten, P. Staudt, G. Stibenz, Laser Optics Berlin, (2008)

D. 2007-2003 (@IIT Kharagpur, India)

74. A novel technique of phase matched direct third harmonic generation using a single BBO crystal, Saha, S K Das , and P. K. Datta, National Laser Symposium -2006, Indore, pp. 415-416
75. Modulation of Effective Nonlinearity χ(3) Due to Cascaded Processes in PPLN for Direct Third Harmonic Generation, S K Das, S Mukhopadhyay, NSinha, A Saha, P K Data and S M Saltiel, CLEO (USA), (2006) Long Beach, California USA, Abstract Page No. 154
76. Stabilization of nonlinear mirror mode-locking by inverse saturable absorber, P. K. Datta, S. Mukhopadhyay, G. K. Samanta and S K Das and A. Agnesi, CLEO (USA), Baltimore Maryland, USA, 2005, Abstract Page No. 114
77. Stable Picosecond Pulse Generation by Forward and Inverse Saturable Absorption, P. K. Datta, S. Mukhopadhyay, G. K. Samanta and S K Das and A. Agnesi, ICONO/LAT, St. Petersberg, RUSSIA, (2005), Abstract Page No. 48
78. High peak-power picosecond Nd :YVO4 oscillatorat multi-kHz repetition rate’,S. Mukhopadhyay, S K Das, L. Tartara, A. Agnesi, V. Degiorgio 13th International Laser physics workshop, Trieste, Italy 12th-16th July, 2004” pp. 49.
79. Efficient blue light generation by cascade intra-cavity second harmonic and sum frequency generation of a Q switched Nd:YVO4 laser, P. K. Datta, S. Mukhopadhyay, S K Das and G K Samanta, PHOTONICS 2004Kochi, India, pp. 264
80. Ultra-short laser pulse generation for characterization of nonlinear optical materials, G. K. Samanta, S K Das, S. Mukhopadhyay, N. Sinha and P. K. Datta International Topical Conference in Applied Photonics, Kolkata, India, pp.55 (2005)
81. All solid state intra-cavity frequency doubled Q-switched green laser S. Mukhopadhyay, G. K. Samanta, S. K. Das, N. Sinha and P. K. Datta, National Laser Symposium -2004, BARC, Mumbai, India, pp. 221-222, 2004.
82. Characterization of a side diode array pumped Nd:YAG amplifier, S. K. Das, G. K. Samanta, S. Mukhopadhyay, N. Sinha and P. K. Datta, National Laser Symposium -2004, BARC, Mumbai, India, pp. 214-215
83. Stability Regime Study of a Nonlinear Mirror Mode-locked laser, P. K. Datta, S. Mukhopadhyay, S K Das and A. Agnesi, National Laser Symposium -2003, Kharagpur, pp.203-204
84. Efficient harmonic generation of a nonlinear mirror mode-locked laser in a periodically poled Lithium Niobate crystal, A. Saha, S. Mukhopadhyay, S K Das and P. K. Datta, National Laser Symposium -2003, Kharagpur, pp. 415-416.

IV. Patent

1. Development of Laser workstation attachment (LWA) and its use for Laser Induced Periodic Structure (LIPS) Generation (Patent filled by NRDC, Govt. of India, Grant no. NRDC/ IPFC/ VSP/ PA/032/2018, Patent filing no. TEMP/E-1/15695/2019-KOL (DoF : 16.04.2019)