University of Calgary         www.ucalgary.ca
Research
Ferromagnetic computing (Nano-magnetoelectronics)

The present computers are based on Si technology where currents and voltages are translated into binary information. How about electron spin to do the same task? We already know devices like magnetic memory (MRAM) and magnetic storage, where electron spin processes binary information. If electron spins can be used for computing and transmitting binary information, the dream of the spin computer may come to reality.

My research in this field is to push the limit to bring the dream into reality. I have demonstrated that four ferromagnetic nanodots in a certain configuration are able to perform logical NAND and NOR operations. This was named as Magnetic Logic Gate (MLG). Each ferromagnetic dot in this architecture was about 100 nm in diameter, having an integration density up to 1.6 billion gates per square centimeter.

Renewable energy

My current interest is Photovoltaic system. PV potential in Canada, PV systems in snowy area, DC system design are examples of my particular interests. Recently, in a collaborative work we have studied the potential of solar energy to be used in a community in Calgary city in Canada. In the past I studied solar radiation data for finding suitable locations in Bangladesh. I also researched on thin film coating material fabrication for solar energy absorption. A significant improvement of solar radiation was reported through that work.

Engineering education

My current interests include student successare, health and safety education for engineering students, science and engineering outreach for K-12 students, and community involvement,

Research Experience

Worked in class 1 cleanroom
Have expertise in nanoscale device fabrication, patterning and various magnetic and
electronic characterizations
Worked with high magnetic fields (up to 17T), low temperatures (as low as mK), ultra high
vacuum (10-10 Torr)

Firsthand experience in using various equipment, such as
Electron Beam Lithography
Optical Lithography
Superconducting Quantum Interference Device (SQUID)
Vibrating Sample Magnetometry (VSM)
Magneto-Optic Kerr Effect (MOKE)
Atomic Force Microscopy (AFM)
Magnetic Force Microscopy (MFM)
Molecular Beam Epitaxy (MBE)
Scanning Electron Microscope (SEM)
Electron Spin Resonance (ESR)
Ferromagnetic resonance (FMR)
X-Ray Diffraction (XRD)
Scanning Tunneling Microscope (STM)
Transmission Electron Microscope (TEM)
Thermal Evaporation
Electron Beam Evaporation
Sputtering