Communications of the ACM
Graphene-Based Terahertz Devices: The Wave of the Future
Credit: Notre Dame University
University of Notre Dame researchers have been able to manipulate terahertz (THz) electromagnetic waves using atomically thin graphene layers, which they say sets the stage for the development of compact, efficient, and cost-effective devices and systems operating in the THz band.
“A major bottleneck in the promise of THz technology has been the lack of efficient materials and devices that manipulate these energy waves,” says Notre Dame graduate student Berardi Sensale-Rodriguez. "Having a naturally two-dimensional material with strong and tunable response to THz waves, for example, graphene, gives us the opportunity to design THz devices achieving unprecedented performance."
The researchers have demonstrated the first proof of concept prototype of a graphene-based THz modulator, a device enabled solely by intraband transitions in graphene. "Graphene has been touted as an ideal platform to discover new, as well as prove/dispute existing, physical phenomena since 2004," says Notre Dame professor Huili (Grace) Xing. She says this new use of graphene to manipulate THz waves is one of the few real-world applications of the material to date.
From Notre Dame News
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