​Prof. Saibal Roy
​Kankana Paul
Arindam Samanta
​Kartik Sood
Prof. Saibal Roy
​PhD, SFI PI
Head of Micropower Systems & Nanomagnetics
Tyndall National Institute
Research Professor- Department of Physics
University College Cork (UCC) 
A.S. Paintal Chair Prof. in Engineering-INSA

Lee Maltings, Dyke Parade
Cork, Ireland T12 R5CP
​
Phone: + 353 21 2346331                
Fax: + 353 21 4904058
Email: saibal.roy@tyndall.ie

​Research

​Prof. Saibal Roy is a Research Professor at the Department of Physics, University College Cork (UCC), Head of Micropower Systems & Nanomagnetics in Tyndall National Institute, and visiting Chair Professor in engineering (INSA). He is holding Science Foundation Ireland Principal Investigator (SFI PI) grant award (& funded investigator in SFI €39 Million research center on ‘IoT’-‘CONNECT’). He did his M.Sc. in Physics from the IIT Kharagpur, India in 1987 and received his Ph.D. in Physics/Materials Science from IACS, India in 1994. He has served both in academia and industry as senior scientist, head of group. Prof Roy’s present research interests include how engineered nanostructures of advanced materials could be employed for the benefit of micro-nano-scale devices in More than Moore scenario. Since joining the Tyndall Institute, Prof. Roy was able to bring substantial (~ € 8 Million) government and corporate competitive direct research grants. Prof. Roy has been honoured by the president of the University (UCC) for licensing patented technology to INTEL. Some of his published works on ‘micro-scale vibrational energy harvesting’ have featured in BBC technology news; Daily Mail; Sunday Telegraph and in American radio. His micro-fabricated high frequency inductors/transformers works have been described as a global benchmark for integrated magnetics. Prof. Roy has supervised several (36) Bachelors/ Masters/ PhD/ Post-doctoral fellows at Physics / EE-Microelectronics / Chemistry-Materials Science Departments, UCC, and at Tyndall National Institute. Many of his students and Postdocts received different national & international awards and are currently holding senior positions in academia (e.g. UL, Cambridge Univ, Tyndall Institute, Manchester Univ, IIT Delhi, IISER ...) and in industries (e.g. Dialog Semi, Eirgrid, ABB, TT electronics, Elix Wireless, Gas Networks Ireland Analogue Devices, Maxim Integrated...). In 2013, Prof. Roy was invited in a sabbatical position hosted by Electrical Engineering and Materials Science departments, Stanford University. He has served as a member of several programme committees, chaired sessions and delivered invited talks in many International Conferences & Corporate R&Ds. In 2015, Prof. Roy was awarded the ‘A. S. Paintal visiting Chair Professorship’ in Engineering by INSA (Indian National Science Academy). The award was given to 3 outstanding foreign scientists. This was in recognition for the contribution Prof. Roy made in the field of Thin-film magnetics, Micro/Nano Technologies and Sciences over previous 20 years. He has 3 global patents, which have been licensed to 3 multinational companies to date, generating substantial income for the University/Tyndall National Institute. In recognition, in 2015, the Tyndall ‘Magnetics on Silicon’ team was awarded as the research team of the year by the University (UCC). In 2017, Prof. Roy has been appointed as Research Professor to the Physics Department of University College Cork (UCC). To date, he has written/co-authored 7 book chapters, ~ 200 papers in high impact Journals and conference proceedings with over 6200 citations and h index of 37.

Professional Details

Education

  • Visiting Scholar - ELectrical Engineering department (2013), Stanford Univ, California USA
  • Ph.D. – Physics/Materials Science (1994) from IACS, Calcutta, India.
         Thesis Topic: Nanostructured advanced materials and their properties.
  • M.Sc. – Physics (1987) - IIT Kharagpur, India, (secured 1st class)

CAREER PROGRESSION

  • Jun 17 – Present:     Research Professor: Department of Physics; University College Cork
  • Feb 13 – Present: Head of Group: Micropower Systems and Nanomagnetics, Micro-Nanosystems centre, Tyndall National Institute, Cork, Ireland.
  • July 15 – Present:    INSA (Indian National Science Academy) Visiting Chair Professor 
  • April 13 – Sept 13: Visiting Scholar: Electrical Engg. Dept., Stanford University, US (On a sabbatical visit)
  • Oct 07 – Jan 13: Senior Scientist, R&D Leader: Microsystems centre, Tyndall National Institute, Cork, Ireland.
  • Jun 02 - Sept 07: Research Scientist (Tenured position): Energy Processing for ICT Tyndall National Institute, Cork, Ireland.
  • Aug 01 - May 02: Arnold F Graves Fellow, FOCAS, DIT, Dublin, Ireland  
  • Mar 99 - July 01: Visiting Scientist: Physics department, National Taiwan University, Taipei, Taiwan.
  • Feb 97 - Mar 99: Senior Scientist (Group Head): Datar Switchgear Limited (DSL) - Presently Larsen & Toubro (L&T) Ltd, Bombay, India.
  • Mar 96 - Feb 97: Postdoctoral Scientist: Instituto fur Estructura de la Materia (IEM) CSIC, Madrid, Spain.
  • Jul 95 - Feb 96:   Visiting Scientist: ACC Ltd, DSL India.
  • Jun 94 - Feb 96:   Research Associate: IACS, Calcutta,  India

AWARDS

  • Prof Tom Brazil Excellence in Research Award - CONNECT, Ireland - 2020
  • Invited talk in an Invited Symposium in joint MMM-Intermag- Washington DC, US - 2019
  • Research Professorship - UCC - 2017 - Tyndall Chief Scientist’s Award - 2017
  • GIAN Fellow- Visiting Professor - Awarded by MHRD, Govt. of India to deliver a Lecture course at Jawaharlal Nehru University (JNU), New Delhi, India – 2016
  • A. S. Paintal ‘Chair Professor in Engineering’ award- 2015 - INSA, Govt. of India
  • Research team of the year – University College Cork (UCC) - 2015
  • Tyndall National Institute recognition award for a globally granted patent - 2015
  • Five PhD students under Prof Roy won different national and international awards
  • SFI PI award, Ireland - 2012
  • Felicitation from JMM for one of the highest citations of a published paper - 2011
  • Honoured by President, UCC, Ireland- licensing patented technology to INTEL - 2009
  • SFI PI award, Ireland - 2006
  • Arnold F. Graves Fellow - FOCAS, DIT, Ireland - 2001
  • Spanish Government Fellowship, IEM, Spain - 1996
  • Received National Merit Scholarships, India – 1980

Publications

Book Chapters
  1. ​​“Vibrational Energy Harvesting” by Larcher, L., Roy, S., Mallick, D., Podder, P., de Vittorio, M., Todaro, T., Guido, F., Bertacchini, A., Hinchet, R., Keraudy, J. and Ardila, G., in the book titled “Beyond-CMOS Nanodevices 1 (ed F. Balestra)”, John Wiley & Sons, Inc., Hoboken, NJ, USA. (2014);  doi: 10.1002/9781118984772.ch6;  ISBN: 9781848216549 
  2. “Nanostructured Magnetic Materials for High-Frequency Applications” by S Roy, J. Godsell and T. Maity in the book titled “Beyond-CMOS Nanodevices 1 (ed F. Balestra)”, John Wiley & Sons, Inc., Hoboken, NJ, USA. (2014); ISBN: 9781848216549;  doi: 10.1002/9781118984772.ch15
  3. “Novel approaches for genuine single phase room temperature magnetoelectric Multiferroics” by L Keeney, M Schmidt, A Amann, T Maity, N Deepak, A Faraz, N Petkov, S Roy, M. Pemble, R. Whatmore in the book “Nanoscale Ferroelectrics and Multiferroics: Key Processing and Characterization issues, and Nanoscale Effects” by Wiley (2015); ISBN: 9781118935750; doi:10.1002/9781118935743.ch25
  4. “Electrochemical Fabrication of Multi-Nano-Layers”  by P McCloskey, B Jamieson, T O’Donnell, D Gardner, M A. Morris and S Roy in the book on “Handbook of Nano-Electrochemistry” – by Springer (2015); ISBN: 9783319152660; doi: 10.1007/978-3-319-15266-0_12
  5. “Micro Photovoltaic Module Energy Harvesting” by Shunpu Li, Wensi Wang, Ningning Wang, Cian O’Mathuna, and Saibal Roy in the book titled “Micro Energy Harvesting” by Wiley (2015), ISBN: 9783527319022; doi:10.1002/9783527672943.ch17
  6. “Magnetic Nanostructures by Nano-Imprint Lithography” by Saibal Roy and Shunpu Li in the book titled “Research Advances in Magnetic Materials” - Nova science publishers Inc, NY, pp-33-54, (2013); ISBN: 978-1-62417-913-6 
  7. “Thermal properties of carbon nanotube - silicone composites” by Ju Xu, Kafil M. Razeeb, Eric D. Dalton, M M. Ramli, Maurice N. Collins and Saibal Roy in the book titled “Polymer Composites: Properties, Performance and Applications; In: Encyclopedia of Polymer Composites.” - Nova science publishers Inc, NY, (2009); ISBN: 978-1-60741-717
​
Selected High Impact Research Publications
  1. Observation of complete inversion of the hysteresis loop in bimodal magnetic thin film; T. Maity, D. Kepaptsoglou, M. Schmidt, Q. Ramasse and Saibal Roy; Phys Rev B- Rapid Com, 2017. Published as a rapid communication signifying the impact of the work
  2. Surfing the high energy output branch of nonlinear energy harvesters; Dhiman Mallick, Andreas Amann and Saibal Roy; Phys Rev Lett; 117, 197701, (2016), doi:10.1103/PhysRevLett.117.197701 One of the topmost journals of Physics
  3. Demonstration of combined bistable and monostable-quartic potential nonlinearity in an electromagnetic vibrational energy harvester; Pranay Podder, Dhiman Mallick, Andreas Amann and Saibal Roy; Scientific Reports; 6, 37292, (2016) (Nature group of publications)
  4. Interplay between electrical and mechanical domains in a high performance nonlinear energy harvester; Dhiman Mallick, Andreas Amann, and Saibal Roy; Smart Mat Struc (Fast Track Communication),  24,122001, (2015)
  5. Reply to the comment on "Superspin Glass Mediated Giant Spontaneous Exchange Bias in BiFeO3-Bi2Fe4O9 Nanocomposite"; T Maity, S Goswami, D Bhattacharya, Saibal Roy;  Phys Rev Lett; 114, 099704 (2015) One of the topmost journals of Physics.
  6. Origin of asymmetric exchange bias in Bi2Fe4O9- BiFeO3 nanocomposite; T Maity, S Goswami, D Bhattacharya, and Saibal Roy; Phys Rev B- Rapid Com, 89, (14), 140411, (2014); Published as a rapid communication signifying the impact of the work
  7. Evidence of Magnetoelectric Coupling from Direct Electrical Measurements on Nanoscale BiFeO3; S Goswami, D Bhattacharya, L Keeney, T Maity, G C. Das, W Li, CZ. Gu, M.E. Pemble and S Roy; Phys Rev B, 90, (10), 104402, (2014); One of the images in the article was chosen to be among the highlighted images of that Journal.
  8. Electrical/optical dual-function redox potential transistor; Shunpu Li, Wensi Wang, Ju Xu, Daping Chu, Z. John  Sheng, Saibal Roy; Scientific Reports (Nature group of publications), 3, 3391, (2013) doi:10.1038/srep03391
  9. Size and space controlled hexagonal arrays of superparamagnetic iron oxide nanodots: magnetic studies and application; T Ghoshal, T Maity, R Senthamaraikannan, M.T. Shaw, P  Carolan, J D. Holmes, S Roy,  M A. Morris; Scientific Reports (Nature group of publications), 3, 2772, (2013) doi:10.1038/srep02772
  10. Invited Feature Article: Magnetic-Field-Induced Ferroelectric Switching in Multiferroic Aurivillius Phase Thin Films; L Keeney, T Maity, M Schmidt, A Amann, N Deepak, N Petkov, S Roy, M E. Pemble, R W. Whatmore; J Am Cerm Soc, 1-19, (2013); Editorially selected as cover article (including cover PFM image). 77 times cited to date
  11. Superspin glass mediated giant spontaneous exchange bias in a nanocomposite of BiFeO3 - Bi2Fe4O9; Tuhin Maity, Sudipta Goswami, Dipten Bhattacharya, and Saibal Roy; Phys Rev Lett, 110, 107201, (2013); One of the topmost journals of Physics. Published also as Asia-Pacific research news highlights. 48 times cited to date
  12. Invited Review Article: Review of Integrated Magnetics for Power Supply on Chip (PwrSoC); Cian Ó Mathúna, Ningning Wang, Santosh Kulkarni, Saibal Roy, IEEE Trans Power Electron; 27, 4799, (2012), 127 times cited to date
  13. Ordered magnetic dipoles: controlling anisotropy in nanomodulated continuous ferromagnetic film; Tuhin Maity, Shunpu Li, Lynette Keeney and Saibal Roy*, Phys. Rev. B, 86, 024438, (2012)
  14. Large scale monodisperse hexagonal arrays of superparamagnetic iron oxides nanodots: a facile block copolymer inclusion method; T. Ghosal, T. Maity, J. F. Godsell, S Roy, M A Morris; Adv. Mater., 24, 2390-2397, (2012); One of the topmost journals in Materials Science. 38 times cited to date
  15. Room Temperature Electromechanical and Magnetic Investigations of Ferroelectric Aurivillius Phase Bi5Ti3(FexMn1-x)O15 (x = 1 and 0.7) Chemical Solution Deposited Thin Films; L Keeney, C Groh, S Kulkarni, S Roy, M Pemble and R Whatmore; J Appl Phys; 112, 024101, (2012). Editorially selected as cover article. 33 times cited to date
  16. Self-Aligned High-Resolution Printed Polymer Transistors; Shunpu Li, Weining Chen, Daping Chu, and Saibal Roy; Adv. Mater., 23, 4107, (2011), One of the topmost journals in Materials Science. 22 times cited to date
  17. Supercritical fluid synthesis of magnetic hexagonal nanoplatelets of magnetite; Zhonglai Li, Jeffrey F. Godsell, Justin P. O’Byrne, Nikolay Petkov, Michael A. Morris, Saibal Roy and Justin D. Holmes; J. Am. Chem. Soc. (JACS) Commun, 132, 36, pp 12540–12541, (2010). One of the topmost journals in chemical Sciences. 28 times cited to date
  18. Shape-independent permeability model for uniaxially-anisotropic ferromagnetic thin films; B. Jamieson, T. O’Donnell, S. Kulkarni, S. Roy; Appl Phys Lett; 96, 202509, (2010). One of the topmost journals in applied physics.
  19. Block copolymer mediated stabilization of sub-5 nm superparamagnetic nickel nanoparticles in an aqueous medium; T Bala, R Gunning, M Venkatesan, J F. Godsell, S. Roy, K M. Ryan; Nanotechnology, 20,  415603, (2009);  Editorially selected as a news item in Nanotechweb.org, IoP publishing, UK ( http://nanotechweb.org/cws/article/lab/40783). 26 times cited to date
  20. Dependence of magnetic properties on micro to nanostructure of CoNiFe films; F. M.F. Rhen, S. Roy; J. Appl. Phys 103, 103901, (2008). Editorially selected for republication in virtual J. of Nanoscience and Nanotechnology. 18 times cited to date
  21. Thin film integrated power inductor on Si and its performance in a 8 MHz buck converter; N. Wang, T. O’Donnell, R. Meere, F. M. F. Rhen, S. Roy, C. O’Mathuna; IEEE Trans. Magn. 44, No 11, 4096-4099, (2008). This work was described as global benchmark for integrated magnetics by PHILIPS, Natherlandes. 52 times cited to date
  22. Microfabricated Inductors for 20 MHz Dc-Dc Converters; T. O'Donnell, N. Wang, R. Meere, F. Rhen, S. Roy, D. O'Sullivan, C. O'Mathuna; Proceedings of IEEE APEC 2008, Feb 24th – 28th ; Austin; Texas, USA. 73 times cited to date
  23. Self-powered autonomous wireless sensor node using vibration energy harvesting;  R. Torah, P. Glynne-Jones, M. Tudor, T. O’Donnell, S. Roy and S. Beeby; Meas. Sci. Technol. 19, 125202 (2008). Editorially selected as one of the journal highlights in the year 2008, which was made available in a special collection of articles. 191 times cited to date
  24. Coaxial metallic nanotubes in polycarbonate templates by electroless deposition; J F. Rohan, D P. Casey, B M. Ahern, F M.F. Rhen, S. Roy, D Fleming and S E. Lawrence; Electrochem Commun 10, 1419-1422, (2008), Published as a rapid communication signifying the impact of the work.  34 times cited to date
  25. Design, fabrication and test of integrated micro-scale vibration-based electromagnetic generator; S. Kulkarni, E. Koukharenko, R. Torah, J. Tudor, S. Beeby, T. O’Donnell, S. Roy, Sensors & Actuators A: Physical; 145-146, 336-342, (2008). 133 times cited to date
  26. Thermal diffusivity of Nonfractal and Fractal Ni Nanowires; KM Razeeb, S. Roy, J. Appl. Phys, 103, 084302, (2008) Editorially selected for republication in virtual J. of Nanoscience and Nanotechnology. 22 times cited to date
  27. A Micro electromagnetic generator for vibration energy harvesting; S P Beeby, M J Tudor, R N Torah, P Glynne-Jones, T O’Donnell, C R Saha and S Roy; J. Micromech. Mcroeng., 17, 1257-1265, (2007). This work was featured in BBC technology news http://news.bbc.co.uk/2/hi/technology/6272752.stm; Daily Mail; Sunday Telegraph, Times of India and in American radio. Editorially selected as cover article. 871 times cited to date.
  28. Micro-inductors integrated on Si for power supply on chip; N.Wang, T.O’Donnell, S.Roy, P.McCloskey, S. C. O’Mathuna; J. Magn. & Mag. Mat. 316, e233-e237, (2007), 67 times cited to date
  29. Experimental comparison of macro and micro scale electromagnetic vibration powered generators: S.P.Beeby, M.J.Tudor, R. N. Torah, S. Roberts, T.O’Donnell, and S.Roy; Microsystem Technologies, 13, 1647-1653, (2007); 59 times cited to date
  30. Vibration based electromagnetic micropower generator on Silicon; S. Kulkarni, S.Roy, T, O’Donnell, S.Beeby, J. Tudor. J. Appl. Phys, 99, 08P511, (2006); Editorially selected for republication in virtual J. of Nanoscience and Nanotechnology. 60 times cited to date
  31. MEMS Vibration Powered Electromagnetic Generator for Wireless Sensors Applications. E. Koukharenko, S. P. Beeby, M. J. Tudor, N. M. White, T. O’Donnell, C. Saha, S. Kulkarni, S. Roy: Microsys. Technol. 12, 1071, (2006). 87 times cited to date
  32. Microfabricated coupled-inductors for dc-dc converters for microprocessor power delivery; S. Prabhakaran, C.R. Sullivan T. O’Donnell, M. Brunet, S. Roy, Proc.of IEEE Power electronics Specialist Conference (PESC), June 20-25, 2004, Aachen, Germany; 40 times cited to date
  33. Thin film microtransformers for future power conversion; T. O’Donnell, N. Wang, M. Brunet, S. Roy, A. Connell, J. Power, C. O’Mathuna, P. McCloskey– Proc. of IEEE Applied power electronics conf (APEC), Feb 22, 2004 Calif., US; 36 times cited to date
  34. Alternating current electrical properties of polymeric graphite, carbon-black and carbon-fiber composites; T.A.Ezquerra, M.T.Connor, Saibal Roy, J.F.Nascimento, M.Kulescza, F.J.Balta-Calleja.  Composite Science & Technology, 61, 903, (2001). 108 times cited so far
  35. Magnetic properties of oxide-coated iron nanoparticles synthesized by electrodeposition; S.Banerjee, S.Roy, J.W.Chen & D.Chakravorty: J. Magn. & Mag. Mat. 219, 45 (2000). 89 times cited to date
  36. Broadband AC conductivity of conductor-polymer composites; M. Connor, S. Roy, T. Ezquerra, F. Calleja, Phys. Rev. B, 57, 2286 (1998). 233 times cited to date.​​