Ferroelectrics fabbed on plastic
Using a process called thermochemical nano-lithography, a team led by Georgia Tech professor NazaninBassiri-Gharb has discovered a low-temperature process for depositing ferroelectric materials on plastic substrates. The group, which also includes postdoctoral fellow Suenne Kim, professor Elisa Riedo, and graduate assistant Yaser Bastani, recently demonstrated nanoscale ferroelectric structures that could be used to fabricated ferroelectric devices on cheap polymers.
Using the heated tip of an AFM, the group fabricated ferroelectric structures suitable for semiconductor devices or MEMS-like sensors and actuators, including wires just 30 nanometers wide and spheres just 10 nanometers in diameter. For ferroelectric memories, the group estimates that densities as high as 200 gigabytes per square inch could be fabricated with their process.
The research was performed in cooperation with the University of Illinois (Urbana-Champaign) and the University of Nebraska (Lincoln). Funding was provided by the National Science Foundation and the U.S. Department of Energy.
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