We study the magnetic, elastic and optical properties of materials ranging from multi-element magnetic structures and novel spin-torque systems to mechanical resonator membranes, glassy semiconductors and biological tissues.
Brillouin and Raman light scattering are powerful microscopic probes of local magnetic and structural properties. In addition to our active research program employing these optical techniques, we are developing Kerr imaging techniques, to study the dynamics of domain walls driven by electrical currents. These efforts are being complemented by lithography methods to fabricate novel structures, high pressure, high and low temperature capabilities.
- Current Driven Magnetic Responses in Patterned Structures
- Field Imbalances and Spin Waves
- Spin-torque Transfer in Novel Patterned Magnetic Structures
- Imaging Current Driven Domain Wall Dynamics - Kerr Spectroscopy
- Engineering Acoustics in Ultra-small Structures
- Flexural & Organ-pipe Resonances in Free-standing Nano-membranes and Bilayers
- Confinement and Folding in Free-standing Rectangular (~100nm x 50nm) wires
- Quantization in Resonant Cavities
- Development of Non-Invasive Optical Probes to study the Elasticity of Biological Membranes
- Cornea
- influence of ocular pressure;
- variations with corneal depth;
- hydration
- Eye lens
- mapping rigidity variations
- Photo-induced properties of Semiconducting Network Glasses
- Rigidity Transition and Photo-softening
R. Sooryakumar
Department of Physics
The Ohio State University
174 West 18th Avenue
Columbus, OH 43210