Academic Profile

Academic Profile

Prof Raju V. Ramanujan

Professor, School of Materials Science & Engineering

Email: ramanujan@ntu.edu.sg
Prof Raju V. Ramanujan

Biography
Ramanujan serves on the Phase Transformations Committee of both TMS (USA) and ASM (USA), the European Union-India Grid, the Public Sector Funding Review Panel (Singapore), he is Editor or Editorial Board member of several international journals, including Nanomedicine, Materials Science and Engineering B (Advanced Functional Solid State Materials), Materials Science and Engineering C (Materials for Biological Applications), Metals, Materials and Processes and Metallurgical and Materials Transactions. He earned his Bachelor’s degree (First Class Honors) from Indian Institute of Technology, Bombay. He was the recipient of a U.S. National Science Foundation Fellowship at Carnegie Mellon University, where he received his Master of Engineering and Ph.D. degrees in Materials Science. He was a staff scientist at Advanced Devices and Materials, U.S.A. where he studied microelectronic reliability issues and methods of enhancing the performance of medical implants. Subsequently, he developed energy efficient materials at the Univ. of Birmingham (U.K.) and novel intermetallic systems at the Bhabha Atomic Research Centre, Bombay and Oak Ridge National Laboratory (USA). He has awarded the Nanyang Award for Excellence in Teaching, he has organized international symposia on advanced functional materials and delivered several invited talks at major international conferences and prestigious universities. In earlier work in England (Univ. of Birmingham), USA and India, he has studied phase transformations in structural materials including aluminum alloys and intermetallics, particularly iron aluminides and titanium aluminides.
Research Interests
Nanomaterials are the focus of research work in Ramanujan?s group, especially magnetic and thermoelectric nanomaterials for energy, bioengineering, information storage and defense applications. Processing, characterization and property measurements are carried out in his group (presently 8 graduate students and 3 Research Fellows).

Recent PhD theses include: Characterization and processing of cobalt based magnetic nanomaterials (Li Huafang),Microstructural evolution and processing of melt spun and mechanically alloyed Fe-Ni-B-Mo nanomagnetic materials (Du Siwei), Alloying effects on nanostructure formation in iron based soft magnetic materials (Yanrong Zhang) and Directed self assembly of patterned magnetic nanostructures (A. Srivastava).

A strong emphasis is placed on electron microscopy and phase transformations are used as an important tool to tailor the microstructure. A bioengineering project, in collaboration with SingHealth, aims to develop magnetic nanoparticles for human liver cancer treatment. Synthesis of magnetic nanoparticles, coating these particles with a suitable polymer and cancer drug, followed by in-vitro and in-vivo testing of the coated particles is being carried out. MRI imaging is being used as an investigative tool in this work. Microelectronic reliability issues, e.g., stress-induced diffusive voiding in microelectronic materials are being studied. Magnetocaloric materials for energy applications, patterned nanostructures for ultra high density data storage media, giant energy product exchange coupled magnetic nanomaterials and nanomaterials for artificial muscles, targeted drug delivery and gene delivery are topics of ongoing research.
Current Projects
  • Advanced electron microscopy of magnetic materials
  • Characterization Of Materials For Energy Research
  • Characterization of Materials for Energy Research
  • Development of novel transducer system
  • Evaluation of human mesenchymal stem cells and smart scaffolds (improved tetracycline-loaded mineralized biodegradable nanofibrous scaffolds) for bone tissue engineering
  • High Temperature Hard Magnetic Materials for Electrical Machine
  • High-strength lightweight metals and soft magnetic materials
  • Low Frequency Magnetic Materials
  • Magnetic Field Enabled Transparent Ceramics for New Generation Solid State Lighting
  • Magnetic nanomaterials for energy applications
  • Magnetofluidic spreading: the roles of magnetoviscous effect, bulk magnetic force, magnetophoresis and convective transport
  • Magnetrocaloric Measurements in Nanocomposite Exchange Spring Magnetic Materials
  • Microprocessor-based methods of composite curing
  • MnNiSi Magnetocaloric Single Crystals Prepared Using an Optical Floating Zone Mirror Furnace
  • Nanomaterials (USD 30,000)
  • Novel Energy Efficient Electric Machines For Electrical Ships Using Magneto-Caloric Systems
  • Novel active transient cooling systems (AOARD R&D Grant 084018)
  • Synthesis and characterization of novel devices (USD 30,000)
  • Work Loop and Ashby Charts of Active Materials (USD36,000)
Selected Publications
  • Z.W. Liu, S.G. Yang, Raju V. Ramanujan, C.K. Ong. (2008). Room temperature ferromagnetism and dynamic magnetic properties of micro-sized Mn-doped ZnO tetrapods. Materials Letters, 62(8-9), 1255-1258.

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