Kuntal Roy

Assistant Professor
Electrical Engineering and Computer Science (EECS) Department
Room No. 302, Academic Building - 1/Infinity
Indian Institute of Science Education and Research (IISER) Bhopal
Bhopal Bypass Road, Bhauri
Bhopal - 462 066, Madhya Pradesh, INDIA
Email: kuntal@iiserb.ac.in

Research Publications

Review Papers

K. Roy, "Energy-efficient multiferroic spin-devices and spin-circuits," SPIN, World Scientific (invited) 10, 2030001 (1-24), 2020. Appeared on cover.
K. Roy, "Ultra-low-energy Electric field-induced Magnetization switching in Multiferroic Heterostructures," SPIN, World Scientific (invited) 6, 1630001 (1-34), 2016.
K. Roy, "Ultra-low-energy straintronics using multiferroic composites," SPIN, World Scientific (invited) 3, 1330003 (1-18) 2013.

Conference Proceedings (Peer-reviewed, Reviews the area of research)

K. Roy, "Estimating spin diffusion length from spin pumping experiments," Proc. SPIE Nanoscience (Spintronics XI), 10732, 1073207, 2018. (Invited paper)
K. Roy, "Spintronics: Recent developments on ultra-low-energy, area-efficient, and fast spin-devices and spin-circuits," TechConnect Briefs 2017, 5, 51-54, 2017.
K. Roy, "Ultra-low-energy straintronics using multiferroic composites," Proc. SPIE Nanoscience (Spintronics VII), 9167, 91670U, 2014. (Invited paper)
K. Roy, "Ultra-low-energy straintronics using multiferroic composites," Mater. Res. Soc. Symp. Proc., 1691, 2014.

Journals

K. Roy, "Spin-circuit representation of spin pumping into topological insulators and determination of giant spin Hall angle and inverse spin Hall voltages," IEEE Magn. Lett.
K. Roy, "Colossal stability of antiferromagnetically exchange coupled nanomagnets," Nanotechnology (Lett.), 32 (43), 43LT01 (1-6), 2021.
K. Roy, "Spin-circuit representation of spin-torque ferromagnetic resonance," IEEE Magn. Lett., 12, 4502005 (1-5), 2021.
K. Roy, "Determining complex spin mixing conductance and spin diffusion length from spin pumping experiments in magnetic insulator/heavy metal bilayers," Appl. Phys. Lett., 117 (2), 022404 (1-5), 2020.
K. Roy, "Estimating the spin diffusion length and the spin Hall angle from spin pumping induced inverse spin Hall voltages," Phys. Rev. B, 96 (17), 174432 (1-7), 2017.
K. Roy, "Spin-circuit representation of spin-pumping," Phys. Rev. Appl. Lett., 8 (1), 011001 (1-7), 2017.
K. Roy, "Ultra-low-energy analog straintronics using multiferroic composites," IEEE Tran. Nanotechnology, 16 (2), 333-346, 2017.
K. Roy, "Separating read and write units in multiferroic devices," Scientific Reports (Nature publishing group), 5, 10822 (1-9), 2015.
K. Roy, "Area-Delay-Energy Tradeoffs of Strain-Mediated Multiferroic Devices," IEEE Tran. Magn., 51 (6), 2500808 (1-8), 2015.
K. Roy, "Dynamical systems study in single-phase multiferroic materials," Europhys. Lett., 108 (6), 67002 (1-6), 2014.
K. Roy, "Landauer limit of energy dissipation in a magnetostrictive particle," J. Phys.: Condens. Matter (Fast Track Communication), 26 (49), 492203 (1-6), 2014. News: Landauer limit in magnetostrictive particles, IOPscience LabTalk (05 Dec 2014)
K. Roy, "Ultra-low-energy computing paradigm using giant spin Hall devices," J. Phys. D: Appl. Phys. (Fast Track Communication), 47 (42), 422001 (1-7), 2014.
K. Roy, "Electric-field induced magnetization switching in interface-coupled multiferroic heterostructures: A highly-dense, non-volatile, and ultra-low-energy computing paradigm," J. Phys. D: Appl. Phys. (Fast Track Communication), 47 (25), 252002 (1-6), 2014. IOPselect: Chosen by editors for their novelty, significance and potential impact on future research.
K. Roy, "Critical analysis and remedy of switching failures in straintronic logic using Bennett clocking in the presence of thermal fluctuations," Appl. Phys. Lett., 104, 013103 (1-5), 2014.
K. Roy, "Ultra-low-energy non-volatile straintronic computing using single multiferroic composites," Appl. Phys. Lett., 103, 173110 (1-5), 2013.
K. Roy, S. Bandyopadhyay, and J. Atulasimha, "Binary switching in a 'symmetric' potential landscape," Scientific Reports (Nature publishing group), 3, 03038 (1-8), 2013.
K. Roy, S. Bandyopadhyay, and J. Atulasimha, "Metastable state in a shape-anisotropic single-domain nanomagnet subjected to spin-transfer-torque," Appl. Phys. Lett., 101, 162405, 2012.
K. Roy, S. Bandyopadhyay, and J. Atulasimha, "Energy dissipation and switching delay in stress-induced switching of multiferroic nanomagnets in the presence of thermal fluctuations," J. Appl. Phys., 112, 023914 (1-8), 2012.
M. S. Fashami, K. Roy, J. Atulasimha, and S. Bandyopadhyay, "Magnetization dynamics, Bennett clocking and associated energy dissipation in multiferroic logic," Nanotechnology, 22, 155201 (1-10), 2011.
K. Roy, S. Bandyopadhyay, and J. Atulasimha, "Switching dynamics of a magnetostrictive single-domain nanomagnet subjected to stress," Phys. Rev. B, 83, 224412 (1-15), 2011.
K. Roy, S. Bandyopadhyay, and J. Atulasimha, "Hybrid spintronics and straintronics: A magnetic technology for ultra low energy computing and signal processing," Appl. Phys. Lett., 99, 063108, 2011. News: Switching up spin, Nature, Aug. 25, 2011

Conferences

K. Roy, "Recent developments on ultra-low-energy, area-efficient, and fast spin-devices and spin-circuits," Collaborative Conference on Materials Research (CCMR), Jeju island, South Korea, Jun 26-30, 2017 [invited].
K. Roy, "Spintronics: Recent developments on ultra-low-energy, area-efficient, and fast spin-devices and spin-circuits," Nanotech 2017, TechConnect World Innovation Conference and Expo, Washington DC, USA, May 17, 2017.
K. Roy, "Recent developments on ultra-low-energy, area-efficient, and fast spin-devices and spin-circuits," International Conference on Small Science (ICSS), San Sebastian, Spain, May 9-13, 2017 [invited, could not go].
K. Roy, "Recent developments on ultra-low-energy, area-efficient, and fast spin-devices and spin-circuits," EMN Summer Meeting, Havana, Cuba, May 4-7, 2017 [invited, could not go].
K. Roy, "Ultra-fast spintronics with optical magnetization switching," EMN Meeting on Optoelectronics, Victoria, Canada, Apr 19, 2017 [invited].
K. Roy, "Spin circuit representation of spin-torque ferromagnetic resonance," American Physical Society (APS) March 2017 Meeting, New Orleans, Louisiana, USA, Mar 16, 2017.
K. Roy, "Spintronics: Recent developments and future perspectives on ultra-low-energy, area-efficient, and ultra-fast spin-devices and spin-circuits," EMN Meeting on Spintronics, Las Vegas, USA, Oct 12, 2016 [invited].
K. Roy, "Spin-Circuit Models for Spin-Pumping: Understanding and Proposing Experiments," EMN Meeting on Magnetic Materials (Spintronics), Kailua-Kona, Hawaii, USA, Mar 22, 2016 [invited].
K. Roy, "Spin Circuit Representation of Spin Pumping in Topological Insulators," American Physical Society (APS) March 2016 Meeting, Baltimore, Maryland, USA, Mar 16, 2016.
K. Roy, "Spin Circuit Representation for Spin Pumping Phenomena," American Physical Society (APS) March 2015 Meeting, San Antonio, Texas, USA, Mar 6, 2015.
K. Roy, "Ultra-low-energy straintronics using multiferroic composites," Proc. of SPIE Nanoscience (Spintronics section), San Diego, California, USA, Aug 17, 2014 [invited paper].
K. Roy, "Ultra-low-energy straintronics using multiferroic composites," Materials Research Society (MRS) Spring Meeting (Advanced Devices section), San Francisco, California, USA, Apr 23, 2014.
K. Roy, "Ultra-low-energy analog straintronics using multiferroic composites," American Physical Society (APS) March 2014 Meeting, Denver, Colorado, USA, Mar 3, 2014.
K. Roy, "Phenomenological study of switching in strongly coupled multiferroics," American Physical Society (APS) March 2013 Meeting, Baltimore, Maryland, USA, 2013.
K. Roy, "Phenomenological study of switching in strongly coupled multiferroics," Ferroelectrics 2013, Ames, Iowa, USA, January 2013.
K. Roy, "An ultra-low-energy computing paradigm using multiferroic composites," Worldwide University Network International Conference on Spintronics (WUN SPIN), Sydney, Australia, July 2012 (invited, could not go).
K. Roy, "Hybrid spintronics and straintronics: An ultra-low energy computing paradigm," American Physical Society (APS) March 2012 Meeting, Boston, Massachusetts, USA, Mar 2012.
N. D'Souza, K. Roy, M. S. Fashami, J. Atulasimha, and S. Bandyopadhyay, "Preliminary experiments on multiferroic nanomagnetic logic devices for ultralow power computing," ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, Stone Mountain, Georgia, September 19-21, 2012.
K. Roy et al, "Hybrid Spintronics and Straintronics: A New Technology for Ultra-Low Energy Computing and Signal Processing Beyond the Year 2020," NSF Conference, Arlington, Virginia, USA, Dec 2011.

Past Publications

Journals

Kuntal Roy, Mrinal K. Naskar, "A Path-Disjoint Approach for Blocking Probability Analysis in Hybrid Dynamic Wavelength Routed WDM Grooming Networks," Published in Journal of Photonic Network Communications, Springer, Volume 18, Number 3, pp. 363-377, December, 2009.
Kuntal Roy, Mrinal K. Naskar, "Genetic Evolutionary Algorithm for Optimal Allocation of Wavelength Converters in WDM Optical Networks," Published in Journal of Photonic Network Communications, Springer, Volume 16, Number 1, pp. 31-42, August, 2008.
Kuntal Roy, Mrinal K. Naskar, "Simulation-Based SONET ADM Optimization Approach for Dynamic Traffic Grooming in WDM Optical Networks," Published in Journal of Photonic Network Communications, Springer, Volume 16, Number 1, pp. 11-21, August, 2008.
Kuntal Roy, "Optimum gate ordering of CMOS logic gates using Euler path approach: Some insights and explanations," Published in Journal of Computing and Information Technology, Croatia, Vol. 15, No. 1, pp. 85-92, March 2007.
Kuntal Roy, Mrinal K. Naskar, "Genetic evolutionary algorithm for static traffic grooming to SONET over WDM optical networks,," Published in Journal of Computer Communication, Elsevier, Vol. 30, Issue 17, pp. 3392-3402, 2007.
Kuntal Roy, Mrinal K. Naskar, "A Heuristic Solution to SADM minimization for Static Traffic Grooming in WDM uni-directional Ring Networks," Published in Journal of Photonic Network Communications, Springer, Volume 12, Number 2, pp. 153-160, September, 2006.

Conferences

Kuntal Roy, "A Model Checking Methodology for Embedded Systems," Published in National Conference on Recent Trends in Information Systems (ReTIS-08), organized by IEEE GOLD Affinity Group, IEEE Calcutta Section, Computer Science Engineering Department, Jadavpur University, 7-9 February, 2008.
Kuntal Roy, "Neural Network Based Macromodels for High Level Power Estimation," Published in International Conference on Computational Intelligence and Multimedia Applications (ICCIMA 07), Vol. 2, pp. 159-163, 13-15 December, 2007, IEEE Computer Society, Tamilnadu, India, 2007.
Kuntal Roy, "A Simple Approach for Optimal Allocation of Wavelength Converters in WDM Optical Networks," Published in International Conference on Wireless and Optical Communication Networks 07 (WOCN 2007, 2-4 July, 2007), IEEE Communication Society, Grand Hyatt, Singapore, 2007.
Kuntal Roy, "Implementation of Low-Complexity Error-Resilient Wavelet-Based Image Compression on TMS320C5402 DSK," Published in National Conference on Recent Trends in Information Systems (ReTIS-06), pp. 25-28, organized by IEEE GOLD Affinity Group, IEEE Calcutta Section, Computer Science Engineering Department, Jadavpur University, July 14 - 15, 2006.
Kuntal Roy, Mrinal K. Naskar, Utpal Biswas, "Adaptive dynamic wavelength routing for WDM optical networks," Published in International Conference on Wireless and Optical Communication Networks 06 (WOCN 2006, 11-13 Apr, 2006), IEEE Communication Society, Bangalore, India, 2006.
Kuntal Roy, Amit Konar, Ajit K. Mandal, "Vision-Based Tracking and Navigation of Mobile Robots in Pioneer-2 Platforms," Published in International Conference on Communication, Devices and Intelligent Systems (CODIS-2004), Electronics and Tele-Communication Engg. Dept., Jadavpur University, pages 670-674, 8-10 Jan, 2004.
Kuntal Roy, Amit Shaw, Amit Konar, "Neuro-Visual Perception in Multi-Agent Coordination of Mobile Robots for Application in Material Transportation Problem," Published in National Conference on Advances on Manufacturing System, 2003, (AMS-2003), Production Engg. Dept., Jadavpur University, pages 433-438, 28-29 Mar, 2003.