• C. Kishandev, J. I. Joy, J. T. Korah, E. Markose and Nikhil Kumar, "Ferroelectric-Modulated Spin to Charge Conversion and THz Emission in Bilayer WTe2 Heterostructures," in IEEE Transactions on Magnetics, 2026, https://ieeexplore.ieee.org/document/11513274/authors#authors
• Sathian, Arun Nelliparambil, Nikhil Kumar, and K. P. Murali. "Unprecedented dielectric minimization in polymer composite: a novel ultra-low dielectric constant, polymer composite substrate for millimeter-wave circuit applications." Journal of Materials Science: Materials in Electronics 37.14 (2026): 1114.https://doi.org/10.1007/s10854-026-17426-2
• Sivan, Abhijith, Vadakkathintakath Muhammed Azeem, Nikhil Kumar, and Kodakkattu mana Purushothaman Murali. "Design and Fabrication of a Microstrip Patch Antenna Using a Flexible Low‐Dielectric, Low‐Loss Substrate." physica status solidi (a), Vol.222, no.24, Pages: e202500550, (2025). https://doi.org/10.1002/pssa.202500550
• 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 2024https://onlinelibrary.wiley.com/doi/full/10.1002/qute.202400015
• 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, 2023https://arxiv.org/abs/2311.14143
• 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.https://www.sciencedirect.com/science/article/abs/pii/S0921452622005373
• 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.https://doi.org/10.1016/j.jmmm.2017.06.009
• 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).https://www.nature.com/articles/srep30747
• 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.https://ieeexplore.ieee.org/document/6971652
• 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.https://ieeexplore.ieee.org/document/6797895
• 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.https://ieeexplore.ieee.org/document/6466461

• N. Kumar, Y. Kharlan, M. Gołębiewski, J. W. Kłos, P. Gruszecki, R. V. Verba, and M. Krawczyk, “Frequency multiplication of edge spin-waves in the antidot lattices,” presented at IEEE Int. Magn. Conf. (INTERMAG), Manchester, U.K., Apr. 13–17, 2026.
•  K. C., J. I. Joy, J. T. Korah, E. Markose, and N. Kumar, “Ferroelectric-modulated spin-charge conversion and THz emission in bilayer WTe₂ heterostructures,” in 2026 IEEE Int. Magn. Conf.—Short Papers (INTERMAG Short Papers), Manchester, U.K., 2026, pp. 1–2, doi: 10.1109/INTERMAGShortPapers68882.2026.11596156.
•  V. Aggarwal, Harish V., and N. Kumar, “Extending the limits of the NV center magnetometer to high field regimes,” presented at Int. Conf. Diamond and Emergent Mater. Sci. Technol., IIT Madras, Chennai, India, Mar. 11–13, 2026.
• H. Safa, M. Mudassir, G. P. Harikrishnan, C. S. N. Kumar, and C. N. S. Kumar, “Coconut shell-derived pyrolysed carbon for electromagnetic interference shielding,” in Functional Materials for Energy, Environment and Healthcare (MEEHCON 2024), V. Sajith and M. M. Shaijumon, Eds. Singapore: Springer, 2026, ser. Springer Proc. Mater., vol. 117.
• V. K. Tripathi and N. Kumar, “Terahertz (THz) fingerprint detection system using a 1D photonic crystal (PhC) cavity,” presented at IEEE Wireless Antenna and Microw. Symp. (WAMS), IIITDM Kanchipuram, Chennai, India, Jun. 5–8, 2025.
•  J. Jose, S. S. Kunnath, and N. Kumar, “Scalable ultra high sensitivity soil moisture detection using photonic crystal cavity array with SIW technology,” presented at Int. Symp. Integrated Magn. (iSIM 2025), 2025 Joint MMM-Intermag Conf., New Orleans, LA, USA, Jan. 12–13, 2025.
• N. Kumar, P. Gruszecki, M. Gołębiewski, J. W. Kłos, and M. Krawczyk, “High-frequency short-wavelength spin waves in the antidot lattice generated in a nonlinear process,” presented at Int. Conf. Magnetism (ICM), Bologna, Italy, Jun. 30–Jul. 5, 2024.
• N. Kumar, P. Gruszecki, M. Gołębiewski, J. W. Kłos, and M. Krawczyk, “Excitation of high-frequency short-wavelength spin waves via high harmonics of magnonic cavity mode,” presented at First Translational Round Table on Magnonics, High-Frequency Spintronics, and Ultrafast Magnetism, Univ. of Exeter, Exeter, U.K., Jun. 3–7, 2024.
• A. C. Venu and N. Kumar, “Enhanced electrical modelling of spin transfer torque magnetic tunnel junctions with temperature dependent magnetic parameters,” in 2024 IEEE Int. Magn. Conf.—Short Papers (INTERMAG Short Papers), Rio de Janeiro, Brazil, 2024. [Online]. Available: https://resourcecenter.magnetics.ieee.org/conferences/intermag-2024/mags2024intmag2480
•  P. Gruszecki, N. Kumar, M. Gołębiewski, J. W. Kłos, and M. Krawczyk, “[title missing],” in 2024 IEEE Int. Magn. Conf.—Short Papers (INTERMAG Short Papers), Rio de Janeiro, Brazil, 2024.
• N. Kumar, P. Gruszecki, M. Gołębiewski, J. W. Kłos, and M. Krawczyk, “Excitation of high-frequency short-wavelength spin waves,” presented at Symp. Spintronics and Quantum Inf. 2024, Fac. Phys., Adam Mickiewicz Univ., Poznań, Poland, 2024.
• Vishnupriya and N. Kumar, “Design and simulation of an artificial magnetic conductor with quasi-periodic crystal,” presented at Int. Conf. Magn. Mater. Appl., Hyderabad, India, Dec. 2023.
• A. Francis and N. Kumar, “Spin flash analog to digital converter,” presented at Int. Conf. Magn. Mater. Appl., Hyderabad, India, Dec. 2023.
• N. Kumar and M. Krawczyk, “Array of magnonic cavities excited by spin torque nano oscillators for enhanced spin wave coupling,” presented at Plasmons and Vibrational Dynamics in Nanomaterials, Dept. Phys., Adam Mickiewicz Univ., Poznań, Poland, Oct. 2022.
• N. Kumar and A. Prabhakar, “Phase locking, intermittency and chaos, of an array of magnonic crystal cavities driven by spin torque nano oscillators,” presented at IEEE Int. Magn. Conf. (INTERMAG), Apr. 23, 2018. [Online]. Available: https://ieeexplore.ieee.org/document/8508736
• A. Prabhakar, N. Kumar, G. Venkat, and M. Malathi, “Magnonic crystals as SWASER cavities,” presented at Magnonics 2017, Magdalen College, Univ. of Oxford, Oxford, U.K., 2017. [Online]. Available: https://magnonics2017dotcom.wordpress.com/program/
• G. Venkat, N. Kumar, M. Arnold, and A. Prabhakar, “Side band suppression in a resonant magnonic crystal cavity,” presented at 62nd Annu. Conf. Magn. Magn. Mater., Pittsburgh, PA, USA, 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, “Coherent microwave emission from a nanomagnet using magnetic feedback,” presented at Int. Conf. Solid State Devices Mater. (SSDM), Tsukuba Int. Congr. Center, Tsukuba, Japan, 2016.
• N. Kumar, G. Venkat, and A. Prabhakar, “Sustained spinwaves using an antidot magnonic crystal cavity,” presented at IEEE AIM Conf., Bormio, 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 Conf., San Diego, CA, USA, 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, 2014.
• G. Venkat, N. Kumar, and A. Prabhakar, “Spin wave dispersion in permalloy nano-rings,” presented at Int. Conf. Magnonics 2013, Varberg Kurort (Spa), Sweden, 2013.
•  N. Kumar and A. Prabhakar, “Spin wave dispersion in striped magnonic waveguide,” presented at IEEE-ICMM 2012, Kaiserslautern, Germany, 2012. [Online]. Available: https://ieeexplore.ieee.org/document/6466461

1) Quantum Computing, Hybrid Quantum Systems, Quantum Technologies based Devices

 2) Classical and Quantum Antenna Design for Wireless, Photonic, and Quantum Systems

 3) Semiconductor-based quantum computing using CMOS technologies, Quantum System on Chip(SoC) Design

 4)Photonic Integrated Circuits for Advanced Classical and Quantum Technologies

5)RF generation using spin wave devices(Magnonics), Topological Magnonics

6)Photonic time crystals, Quantum time crystals

7) Computational electromagnetics(micromagnetics)

8) Microwaves in ultrasmall scale devices, Cavities

9)Magnetization dynamics of nanoscale magnetic materials, Non Linear Time Series Analysis

10) Spintronic based RF components and Circuit level modelling

11)Application of the spin wave devices for quantum technologies

12)Neuromorphic Spintronics, Quantum Devices, Materials

13) Photonics, Optics, Optical Communications, Gravitational waves

1. "Apparatus for sustaining magnetic oscillations using a magnonic crystal cavity", IN201641008819, 2017. Patent No.: 346145. Date of Grant:06/09/2020.,Patentee- Indian Institute of Technology Madras,  PCT/IN2017/050090- -https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2017158620&_fid=WO2017158620
2. “A Millimeter Wave Apparatus for Measuring Soil Content Parameters with Ultra High Sensitivity”, IN202541025789, 2025  Patent No.: 605578, Date of Grant: 09/10/2026,  Patentee-National Institute of Technology Calicut

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.https://link.springer.com/book/10.1007/978-981-19-6176-2
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.https://link.springer.com/book/10.1007/978-3-031-22665-6

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

Linkedin: https://www.linkedin.com/in/nikhil-kumar-c-s52266b1b3/

Orcid: https://orcid.org/0000-0003-3213-505X

Scopus: https://www.scopus.com/authid/detail.uri?authorId=57214110116

Vidwan: https://vidwan.inflibnet.ac.in/profile/603434

• "Design and Development of Biocompatible Microwave Hyperthermia Applicator for Breast Cancer Treatment", Faculty Research Grant, National Institute of Technology Calicut, India (internal Funded Project, 5 Lakhs), Duration 1 year-- Principal Investigator
• "Development of Multilayer Carbon Metapatterns for High-Performance Broad-Band Electromagnetic Shielding Applications", (External Funded Project, Research Grant-Rs:31.33 Lakhs, Organizations- Aeronautical Research and Development Board(AR&DB), Defence Research Development and Organizations,(DRDO),India)-External Project, Aug 2024, Duration 3 year- Principal Investigator
• “Development of Smart and Flexible Optical Solar Reflectors for Advanced Spacecraft Thermal Control” (External Funded Project, Research Grant-Rs:48.31 Lakhs, Organizations- Space Technology Pannel, Aeronautical Research and Development Board(AR&DB), Defence Research Development and Organizations,(DRDO),India)-External Project, June 2026, Duration 3 year- Principal Investigator
• Institute MoU between National Institute of Technology Calicut and Adam Mickiewicz University Poznan Poland, Institute of Spintronics and Quantum Informations- 28-10-2024
• Institute of Spintronics and Quantum Informations, Adam Mickiewicz University, Poznan Poland- Visiting Researcher

B.Tech Students

• 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, Abhinav-Direct PhD, IIT Bombay, 2024
• Dokala Charan Babu, Perugu Mahaveera, Putla Ajel, Redy VushnuTej, CMOS Circulator for RF Applications, 2025
• Aswin Prakash, Gautam Gangadhar, Oliver Kadambatt, Sanju George, Cryogenic CMOS Circulator for Quantum Applications, 2025

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

2- EC4012D Radiation and Antenna Theory(Monsson 2023, Monsoon 2024)

3- EC4065D Radio Frequency Circuits(Monsoon 2024)

4- EC6104E-Electromagnetic Compatibility(Winter 2024)-Jointly with Dr. Suja K J

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

M.Tech Scholars

• Akhil P Sanu- Spin Torque Induced Magnonic Phase Shifter, QIP Candidate, Govt. Polytechnique Lecturer, 2024
• Aswin C Venu-Enhanced Electrical Modelling of Spin Transfer Torque Magnetic Tunnel Junctions with Temperature Dependent Magnetic Parameters,- Placed in Intel, 2024
• Abin Francis-Spin Flash Analog to Digital Converter,- Placed in Sasken Communications,  2024
• Vinayak Kumar Tripathi-TeraHertz Finger Print Detection with ultra sensitivity using 1D Photonic Crystal Cavity, Placed in Leka Wireless for 5G Communication, 2025
• RupamJyothi Basumatary-Neuromorphic Computing with Spintronic Oscillators, 2025
• Abhijith Sivan- Jointly supervised with Dr. Murali K P, Synethesis and Characterization of a Low Dielectric, Low loss Flexible Substrate For Microstrip Patch Antenna with Application in Parkinson's Disease, 2025
• Hema Sai-Improved Wireless Power Transfer Efficiency with Non-Perfect Lenses 2026
• Prince Kumar - Waveguide Coupled Photonic Crystal Cavity for Quantum Dot Spin Readout 2026
• Suman K- Simulation Study on Detection of Internal and Surface Defects in Wire Ropes using Magnetic Flux leakage 2026 

• Justin Jose(External)-Advanced RF and Microwave Devices, Magnonics, Spintronics, Quantum Technologies
• Arun N S(External)- RF and Microwaves, Jointly supervised with Dr. Murali K P
•  Divya S(External)-Quantum Dots, Jointly supervised with Dr. Gopi Krishna S

If you are interested in working with me, please send your C.V. to me at nikhilkumarcs@nitc.ac.in.  I am looking for motivated and interested B.Tech., M.Tech., and Ph.D. candidates.