Amritesh Kumar, Ph.D., Postdoctoral Fellow

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Research Interest

Dr. Kumar’s research work encompasses the development of novel magnetoelectric composites with enhanced magnetoelectric output achieved via configurational advancement, formulation of analytical and numerical models to predict the composite behavior, and use the developed composites for device prototype fabrication. Some of the notable contributions of Dr. Kumar include the development of a novel epoxy-free fabrication procedure termed a press-fit method, a novel distributed disc structured (DDS) magnetoelectric composite configuration, and a thermally stable multi-directional magnetic field sensor. Currently, Dr. Kumar is interested in investigating applied mechanics-based shock-wave interaction with smart materials and polymers and studying the impact of high strain rate loading on such materials. These studies would be beneficial in developing materials capable of sustaining impact loads and have extensive applications in defense equipment and armored gears.

Education

  • B.tech: Cochin University of Science and Technology, Kochi, Kerala, India. April 2016
  • M.S.: Indian Institute of Technology Madras, Chennai-India. July 2022.
  • Ph.D.: Indian Institute of Technology Madras, Chennai-India. July 2022.

Experience

  • Postdoctoral Researcher: Indian Institute of Technology Madras, Chennai-India. June 2022 – February 2023.

Publications

  • Amritesh Kumar and George Youssef “Coexistence of Hardening and Softening Phenomena in Elastomeric Polymers under Nano-Impact Loading” Macromolecular Materials and Engineering, 2024 (Accepted).
  • Amritesh Kumar, David Pullman, and George Youssef “Spectroscopic probing of ultraviolet-induced degradation in elastomeric polyurea.” Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2023, (Accepted).
  • Nha Uyen Huynh, Amritesh Kumar, Maryam Ghorbani, and George Youssef “Terahertz Characterization of Combined Pressure-Shear Shock Loaded of Aromatic Polyurea.” Polymer Testing, 2023, (Accepted).
  • A. Kumar, Scott Newacheck, and George Youssef. “Parametric Investigations of wireless energy transfer using strain-mediated magnetoelectric transmitter-receiver.” Smart Materials and Structures, 2023, (Accepted).
  • A. Kumar, J. A. Chelvane, A. Arockiarajan. Thermally stable multi-directional magnetoelectric-based embedded magnetic sensor. Smart Materials and Structures, DOI 10.1088/1361-665X/acbf8e.
  • A. Kumar and A. Arockiarajan. Epoxy-free fabrication techniques for layered/2-2 magnetoelectric composite: A review, Smart Materials and Structures, 31(8), (2022). DOI: https://doi.org/10.1088/1361-665X/ac7831.
  • A. Kumar and A. Arockiarajan. Evolution of nonlinear magneto-elastic constitutive laws in ferromagnetic materials: A comprehensive review. Journal of Magnetism and Magnetic Materials, 546, p.168821 (2022). DOI: https://doi.org/10.1016/j.jmmm.2021.168821
  • A. Kumar and A. Arockiarajan. Numerical interpretation and experimental investigation of enhanced magnetoelectric effect in Ni/PZT distributed disc structured composite. Composite Structures, 280, p.114958 (2022). DOI: https://doi.org/10.1016/j.compstruct.2021.114958
  • A. Kumar, J.A. Chelvane, and A. Arockiarajan. Enhanced self-biased magnetoelectric response in novel distributed disc structure Ni/PZT composite. Materials Letters, 305, p.130834 (2021). DOI: https://doi.org/10.1016/j.matlet.2021.130834
  • A. Kumar and A. Arockiarajan. Modeling of resonant magnetoelectric response in press-fit embedded ring composite. European Journal of Mechanics-A/Solids, 84, p.104052 (2020). DOI: https://doi.org/10.1016/j.euromechsol.2020.104052
  • A. Kumar, J.A. Chelvane, and A. Arockiarajan. Temperature-dependent dynamic response in epoxy-free and epoxy-bonded ME composite: a comparative study. Smart Materials and Structures, 29(3), p.035015 (2020). DOI: https://doi.org/10.1088/1361-665X/ab68d8
  • A. Kumar and A. Arockiarajan. Temperature-dependent magnetoelectric (ME) response in press-fit FeNi/PZT/Ni self-biased ring composite. Journal of Applied Physics, 126(9), p.094102 (2019). DOI: https://doi.org/10.1063/1.5108708
  • Saha, R.P. Singh, Y. Liu, A.B. Swain, A. Kumar, V. Subramanian, A. Arockiarajan, G. Srinivasan and R. Ranjan. Strain transfer in ferroelectric-ferrimagnetic magnetoelectric composite. Physical Review B, 103(14), p.L140106 (2021). DOI: 10.1103/PhysRevB.103.L140106
    •     T. Parida, A. Kumar, B.S. Murty and G. Markandeyulu. Magnetic and magnetoelectric response of Gd doped nickel ferrite and barium titanate nanocomposites. Journal of Applied Physics, 127(11), p.114104 (2020). DOI: https://doi.org/10.1063/1.5138239
    •     K.V. Siva, A. Kumar, J.A. Chelvane and A. Arockiarajan, Structural, magnetic, magnetostrictive and optical properties of Mn and Cu codoped cobalt ferrite, Materials Science and Engineering-B, 284, p. 115885, (2022). DOI: https://doi.org/10.1016/j.mseb.2022.115885
    •     K.V. Siva, A. Kumar and A. Arockiarajan. Structural, magnetic and magnetoelectric investigations on CoFe2O4 prepared via various wet chemical synthesis route: A Comparative Study. Journal of Magnetism and Magnetic Materials, 535, p.168065 (2021). DOI: https://doi.org/10.1016/j.jmmm.2021.168065
    •     A.H. Pandey, P. Varade, K. Miriyala, N.S. Sowmya, A. Kumar, A. Arockiarajan, A.R. Kulkarni and N. Venkataramani. Magnetoelectric response in lead-free Na0.4K0.1Bi0.5TiO3/NiFe2O4 laminated composites. Materials Today Communications, 26, p.101898 (2021). DOI: https://doi.org/10.1016/j.mtcomm.2020.101898
  • A.H. Pandey, A. Kumar, P. Varade, K. Miriyala, A. Arockiarajan, A. R. Kulkarni and N. Venkataramani. Temperature-dependent magnetoelectric response of lead-free Na0.4K0.1Bi0.5TiO3/NiFe2O4 laminated composites, Journal of Materials Science: Materials in Electronics, JMSE-D-22-00144 (Under review)

Patent Publications

  • Kumar, J.A. Chelvane, A. Arockiarajan, ‘Distributed disc structured magnetoelectric composite device’, Status: Granted, Patent Number – IN 387760.
  • Kumar, S. Veeraraghavan, Dileesh M., A. Arockiarajan, ‘Magneto-electric based magnetic sensor and method thereof’, Status: Granted, Patent Number – IN 411667.

Conference Presentations

  • A. Kumar, and A. Arockiarajan. Improved magnetoelectric response of distributed disc structured composite in aggravated thermal environment. In Behavior and Mechanics of Multifunctional Materials XVI (Vol. 12044, pp. 37-41). SPIE, April (2022).