• Nikhil Kumar, Pawel Gruszecki, Mateusz Gołębiewski, Jarosław W. Kłos, Maciej Krawczyk “Exciting high-frequency short-wavelength spin waves using high harmonics of a magnonic cavity mode,” Advanced Quantum Technologies: 2400015, March 2024
• Nikhil Kumar, Pawel Gruszecki, Mateusz Gołębiewski, Jarosław W. Kłos, Maciej Krawczyk “Exciting high-frequency short-wavelength spin waves using high harmonics of a magnonic cavity mode,” preprint arXiv:2311.14143, 2023
• Nikhil Kumar "Enhanced spin wave coupling between array of spin torque nano oscillators in magnonic crystal cavities," Physica B:Condensed Matter, vol.645, Aug 2022.
• N. Kumar and A. Prabhakar, "Resonant spin wave excitations in a magnonic crystal cavity," in Journal of Magnetism and Magnetic Materials, vol. 450, March 2018.
• D. Kumar, K. Konishi, Nikhil Kumar, S. Miwa, A. Fukushima, K. Yakushiji, S. Yuasa,H. Kubota, C. Tomy, A. Prabhakar, Y. Suzuki and A. Tulapurkar, "Coherent microwave generation by spintronic feedback oscillator," in Scientific Reports, vol.6, Article number: 30747 (2016).
• G. Venkat, N. Kumar and A. Prabhakar, "Micromagnetic and Plane Wave Analysis of an Antidot Magnonic Crystal with a Ring Defect," in IEEE Transactions on Magnetics, vol. 50, no. 11, pp. 1-4, Nov. 2014, Art no. 7101104.
• N. Kumar , G. Venkat and A. Prabhakar, "An Iterative Solution for Spin-Wave Dispersion in a Magnonic Ring," in IEEE Transactions on Magnetics, vol. 50, no. 9, pp. 1-6, Sept. 2014, Art no. 1300306.
• N. Kumar and A. Prabhakar, "Spin Wave Dispersion in Striped Magnonic Waveguide," in IEEE Transactions on Magnetics, vol. 49, no. 3, pp. 1024-1028, March 2013.

• Nikhil Kumar, Paweł Gruszecki, Mateusz Gołębiewski, Jarosław W Kłos, Maciej Krawczyk, “High-frequency short-wavelength spin waves in the antidot lattice generated in a nonlinear process,” International Conference on Magnetism, on 30th June 5th July 2024, Bologna, Italy.
• Nikhil Kumar, Pawel Gruszecki, Mateusz Gołębiewski, Jarosław W Kłos, Maciej Krawczyk, “Excitation Of High-Frequency Short-Wavelength Spin Waves Via High
  Harmonics Of Magnonic Cavity Mode,” First Translational Round Table on Magnonics, High-Frequency Spintronics, and Ultrafast Magnetism, University of Exeter, 3-7 June 2024.
• Venu, Aswin C., and Nikhil Kumar. "Enhanced Electrical Modelling of Spin Transfer Torque Magnetic Tunnel Junctions with Temperature Dependent Magnetic Parameters." 2024 IEEE International Magnetic Conference-Short papers (INTERMAG Short papers), RIO, Brazil
• Paweł Gruszecki, Nikhil Kumar, , Mateusz Gołębiewski, Jarosław W Kłos, Maciej Krawczyk, 024 IEEE International Magnetic Conference-Short papers, .RIo Brazil, IEEE, 2024. IEEE, 2024. IEEE International Magnetic Conference. RIo Brazil, IEEE, 2024.
• Nikhil Kumar, Paweł Gruszecki, Mateusz Gołębiewski, Jarosław W Kłos, Maciej Krawczyk, "Excitation of high-frequency short-wavelength spin waves", Symposium on Spintronics and Quantum Information 2024, Faculty of Physics, Adam Mickiewicz University, Poznań
• Vishnupriya, Nikhil Kumar, "Design and simulation of an artificial magnetic conductor with quasi-periodic crystal", International Conference on Magnetic Materials and Applications, Hyderabad, Dec 2023.
• Abin Francis, Nikhil Kumar, "Spin Flash Analog to Digital Converter", International Conference on Magnetic Materials and Applications, Hyderabad, Dec 2023.
• Nikhil Kumar, Maciej Krawczyk "Array of magnonic cavities excited by spin torque nano oscillators for enhanced spin wave coupling," Plasmons and vibrational dynamics in nanomaterials, Physics department, Adam Mickiewicz University, Poznan, Poland, Oct 2022
• N. Kumar , A. Prabhakar, "Phase locking, intermittency and chaos, of an array of magnonic crystal cavities driven by spin torque nano oscillators", IEEE International Magnetic Conference, 23 - 4 - 2018.
• A. Prabhakar, N. Kumar, G. Venkat, and M. Malathi, "Magnonic crystals as SWASER cavities", Presented at Magnonics 2017, Magdalen College, University of Oxford, UK.
• G.Venkat, N. Kumar , M. Arnold and A. Prabhakar, "Side band Supression in a Resonant M agnonic Crystal Cavity", presented at 62 nd Annual Conference on Magnetism and Magnetic Materials Pittsburgh, PA Fort Duquesne Blvd, Pittsburgh, PA 15222, 2016, USA.
• D. Kumar , K. Konishi, N. Kumar , S. Miwa, A. Fukushima, K. Yakushiji, S. Yuasa, H. Kubota, C. Tomy, A. Prabhakar, Y. Suzuki, A. Tulapurkar, "Coherent microwave emission from a nanomagnet using magnetic feedback", presented at International conference on Solid State Devices and Material,(SSDM), Tsukuba International Congress Center, Japan, 2016.
• N. Kumar , G. Venkat and A. Prabhakar, "Sustained spinwaves using an antidot magnonic crystal cavity", presented at IEEE AIM Conference, Bornio, Italy, 2016.
• D. Kumar , K. Konishi , N. Kumar , S. Miwa , A. Fukushima, K. Yakushiji , S. Yuasa , H. Kubota, C.V. Tomy , A. Prabhakar , Y. Suzuki and A. Tulapurkar, "Large Quality factor of oscillations in MgO - based magnetic field feedback oscillator", presented at Joint MMM-Intermag Conference, San Diego, California, 2016.
• G. Venkat, N. Kumar , and A. Prabhakar, "Spin wave propagation in an antidot magnonic crystal with a ring defect", presented at Intermag, 2014, Dresden, Germany.
• G. Venkat, N. Kumar , A. Prabhakar,"Spin wave dispersion in permalloy nano-rings", presneted at International conference in Magnonics 2013, Varberg Kurort(Spa), 2013.
• N. Kumar , G. Venkat and A. Prabhakar, "Sustained spinwaves using an antidot magnonic crystal cavity", presented at IEEE AIM Conference, Bornio, Italy, 2016.
• N. Kumar , A. Prabhakar, "Spin wave dispersion in striped magnonic waveguide", presented at IEEE-ICMM 2012, Kaiserslautern, Germany.
•  

1) RF generation using spin wave devices

2)Antennas and Metamaterials

2) Computational electromagnetics(micromagnetics)

3) Microwaves in ultrasmall scale devices, Cavities

4)Magnetization dynamics of nanoscale magnetic materials

5) Spintronic based RF components

6) Circuit level modelling of spintronics devices.

7)Application of the spin wave devices for quantum technologies

8)Neuromorphic Spintronics, Quantum Devices, Materials

9) Photonics, Optics, Optical Communications, Gravitational waves

1. Chownkulangara Sudhakaran Nikhil Kumar, Venkat Guru, Prabhakar Anil, "Apparatus for sustaining magnetic oscillations using a magnonic crystal cavity", IN201641008819, 2017. Granted - 2020 - Patent No: 346145. PCT/IN2017/050090(IIT Madras)

1. C.S.Nikhil Kumar "Magnetic Resonators: Feedback with Magnetic Field and Magnetic Cavity", SpringerBriefs in Applied Sciences and Technology, ISBN: 9789811961755, Springer Nature Singapore, Oct 2022.
2. C.S.Nikhil Kumar "Magnonic Devices: Numerical modelling and Micromagnetic Simulation Approach'', SpringerBriefs in Materials Series, ISBN: ISBN-978303122664-9, Springer Nature Switzerland, Feb 2023.

http://scholar.google.com/citations?hl=en&user=eV7vOBcAAAAJ

1. Teaching Assistantship and Recognition Award -July- Dec 2014-IIT Madras
2. Teaching Assistantship and Recognition Award -Jan- July 2015-IIT Madras

1- EC2022D-Electromagnetic Field Theory(Winter 2023, Winter 2024)

2- EC4012D Radiation and Antenna Theory(Monsson 2023, Monsoon 2023)

3- EC4065D Radio Frequency Circuits(Monsoon 2024)

• Dr. Nikhil Kumar C S(PI), "Design and Development of Biocompatible Microwave Hyperthermia Applicator for Breast Cancer Treatment", Faculty Research, National Institute of Technology Calicut, India (internal Funded Project, 5 Lakhs), Alloted Ph.D. Student-VishnuPriya L(P220289EC)-Internal Project, October 2023, Durations 2 years
• Dr. Shyam Kumar C N(PI-I), Dr. Nikhil Kumar C S(PI-II),  "Development of Multilayer Carbon Metapatterns for High-Performance Broad-Band Electromagnetic Shielding Applications", (External Funded Project, Research Grant-Rs:31.33 Lakhs, Organizations- Defence Research Development and Organizations,(DRDO),India)-External Project, Aug 2024, Duration 3 year

• P220289EC: Vishnupriya L(External)
• P230093: Justin Jose(External)
• B230204EC: Arun N S(External)- Jointly supervised with Dr. Murali K P
• P230558EC Divya S(External)-Jointly supervised with Dr. Gopi Krishna S

M.Tech Alumni

• Akhil P Sanu- Spin Torque Induced Magnonic Phase Shifter, 2024, Govt. Lecturer in Poly Technique
• Aswin C Venu-Enhanced Electrical Modelling of Spin Transfer Torque Magnetic Tunnel Junctions with Temperature Dependent Magnetic Parameters,2024 - Placed in Intel
• Abin Francis-Spin Flash Analog to Digital Converter, 2024- Placed in Sasken Communications
• Vinayak Kumar Tripathi-Ongoing
• RupamJyothi Basumatary-Ongoing
• M230259ME-Abhijith Sivan(Internal)-Ongoing Jointly supervised with Dr. Murali K P

B.Tech Alumni

• Aman Syed, Chandu Guthavelli, Debojyoti Bhattacharya, Jatoth Naveen Kumar-Exploring 21 CM wavelength Radio Antennas: Set up and Versitle Applications, 2024
• Abhinav Vinod E P, Abhishek, Ajmal Shehzad T, Irfan Muhammed Sageer- Antenna Array Optimization for Breast Cancer Hyperthermia Treatment, 2024
• Dokala Babu, Perugu Mahaveera, Putla Ajel, Redy VushnuTej, CMOS Circulator for RF Applications(Ongoing)
• Aswin Prakash, Gautam Gangadhar, Oliver Kadambatt, Sanju George, Cryogenic CMOS Circulator for Quantum Applications(Ongoing)