Overview | Research Directions | Current Projects | Principal Investigators

RESEARCH DIRECTIONS

 

• NANOSTRUCTURE FABRICATION METHODOLOGIES
  • Self-Assembly
    • Achieved by Molecular Scale Imprinting (MSI) and Mesoporous Silicate Synthesis, leading to formation of quantum wire and dot patterns.
  • Lithography
    • Growth and processing using lithographically patterned templates

    • (1) Molecular beam epitaxy (MBE) and 
      (2) Ion implantation

   

• ISSUES RELATING TO MINIATURIZATION OF CONVENTIONAL DEVICES
  • Hot Carrier Phenomena
  • Studies aimed at reducing short channel and hot carrier effects in device design. Focus on how interface effects and hot carrier effects on injection, capture, emission and recombination processes in low dimensional structures influence dynamic response.
  • Dopant Fluctuation Issues
  • Studies of how dopant fluctuations influence potential/scattering profiles of ‘active carriers’ in scaled devices.
  • Interface and Surface Effects
  • Focus on characterization and control of surface/interface phenomena in nanostructures.
  • Oxide Dielectrics for MOS

 

• QUANTUM PHENOMENA FOR FUTURE DEVICES
  • Plastic LEDs with Quantum Dots
  • Semiconductor Quantum Dot Laser/Photodetector
  • Photonic Bandgap Structures
  • Ferroelectrics
  • Non-Linear Optics
  • Electronic Devices
    • Single Electron: Study of single electron phenomena in quantum dot and quantum wire systems leading to single electron devices.
    • Ferroelectrics (FeRAM) - Focus on understanding key issues for nanostructures based on ferroelectrics, and how materials characteristics vary with shrinking dimensions.
  • Spin Devices
    • Nano-ferromagnet and Superconductor Spin Injection Systems – Studies of a variety of nanostructures comprising ferromagnetic, paramagnetic and superconducting materials in conjunction with cryogenic STM spectroscopy to study basic issues related to itinerant ferromagnetism, spin transport and non-equilibrium superconductivity.

   

• COLLECTIVE BEHAVIOUR OF QUANTUM ASSEMBLIES
  • Quantum Cellular Automata (QCA) Models
    • Exploring theory of quantum information through models of quantum cellular automata and artifical life and performing relevant computer simulations, using subdynamics, functional analysis and C++, Java programming.
  • Quantum Wire and Quantum Dot Assemblies
    • Studies to (a) understand steady state and dynamical behaviour of interacting assemblies of quantum systems, and how they may furnish the basis for future quantum information systems, (b) observe interacting nanosystems in laser-cooled traps in order to understand the behaviour of solid-state analogs.

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