Academic Profile

Academic Profile

Asst Prof Ranjan Singh

Assistant Professor
Division of Physics & Applied Physics
School of Physical & Mathematical Sciences
College of Science

Phone: (+65)63162965
Office: SPMS-PAP-03-13

  • PhD (Photonics) Oklahoma State University 2009
  • MTech (Optoelectronics & Laser Tech.) Cochin University of Science & Tech. 2004
  • BEng (Telecommunication) Bangalore University 2001
Dr. Ranjan Singh is an Assistant Professor at the School of Physical and Mathematical Sciences, Division of Physics and Applied Physics since October 2013. He received his B. S. degree in Telecommunications Engineering from Bangalore University in 2001, his M. S. degree in Optoelectronics and Laser Technology from Cochin University of Science and Technology in 2004, and Ph. D. in Photonics from Oklahoma State University in 2009. Before joining NTU, he was a postdoctoral research associate at the Los Alamos National Laboratory from 2009. His current research interest includes superconductors, ultrafast optics, terahertz time resolved spectroscopy, micro-nanophotonics, metamaterials, plasmonics, and high Q RF cavities for accelerator applications. He has published more than 100 peer reviewed journal papers including Nature Communications, Advanced Materials, Applied Physics Letters and Physics Review Letters. His current h-index is 40. Dr. Singh's metamaterial works has been highlighted by several scientific magazines and general public media such as Optics and Photonics news, MRS news, Materials 360 online news, Science news, Nanotechnology now, Photonics Online,, R&D magazine, and Albuquerque daily news.
Research Interests
Dr. Singh’s research interests lie at the intersection of electromagnetics, materials, photonics and micro-nanotechnology, with special focus on studying light-matter interaction at the micro-nanoscale. Broadly his research interests are in the areas of nanophotonics, semiconductors, metals, superconductors, plasmonics, metamaterials and nanofabrication. He has been working on design, simulations and fabrication of novel electromagnetic devices including metamaterials, plasmonic resonators and complex oxide transition materials, while simultaneously exploring their applications in information, sensing and energy.
Dr. Singh’s research interests are focused on the development of terahertz, infrared, and optical metamaterial based active and passive plasmonic devices. Metamaterials have been found to possess exotic properties and effects that are beyond the realms of materials that exist in nature. His contributions in the field so far has been in the terahertz region where he demonstrated classical active and passive analogues of electromagnetically induced transparency through near field coupled metamaterial resonators, sensing with metamaterials, chiral metamaterials, ultra-high quality factor Fano resonances, and ultrafast superconductor metamaterials.
Dr. Singh’s recent research focuses on addressing the issue of losses in subwavelength plasmonic metamaterials and investigates new dynamic materials that could be integrated with metamaterial resonators to achieve the active control of the photonic devices with exotic properties.
Current Projects
  • QUANTUm METamaterials with High Tc Superconductors (QUANTUMET)
  • Quantum and Topological Nanophotonics
  • Revolutionary Perovskites Versus Silicon for Ultrafast Active Photonic Devices
  • Superconductor Active Photonics: Thermal, Optical, and Magnetic Tuning
  • Tackling the Problem of Super High-Tc Superconductivity with Novel 2D Material Systems
  • Terahertz Science and Technology
  • Ultrafast Plasmonics Based Micro-Nanophotonic Waveguides for Subwavelength Plasmonic Circuitry
  • Unlocking the Superconducting Plasmonic Meta-Atoms for Lossfree Active Photonics
Selected Publications
  • Manukumara Manjappa, Yogesh Kumar Srivastava, Ankur Solanki, Abhishek Kumar, Tze Chien Sum, Ranjan Singh. (2017). Hybrid lead halide perovskites for ultrasensitive photoactive switching in terahertz metamaterial devices. Advanced Materials, 29(32), 1605881.

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