PORTLAND, Ore. – Massachusetts Institute of Technology (MIT) researchers have sandwiched high-mobility graphene sheets between two ferroelectric materials, resulting in terahertz (THz) frequency operation that can directly operate on optical signals.
MIT predicts that the new material stack will lead to memories that are 10-times denser than today and to electrical devices that can directly operate on optical signals.
“Our work opens up exciting new areas for transmitting and processing optical signals,” said post-doctoral researcher Dafei Jin in a press statement. Jin is working with professors Nicholas Fang and Jun Xu, along with doctoral candidates Anshuman Kumar Srivastava and former post-doc researcher Kin-Hung Fung (now at Hong Kong Polytechnic University).
The researchers were inspired by ferroelectric-gated memories and transistors, to which they added the graphene material to improve performance. As they characterized the resulting hybrid devices, they discovered that two-dimensional plasmons form in the graphene that strongly couple with the phonon-polaritons in the ferroelectric materials. As a result, the devices were able to operate at terahertz frequencies with very low power dissipation.
PORTLAND, Ore. – Massachusetts Institute of Technology (MIT) researchers have sandwiched high-mobility graphene sheets between two ferroelectric materials, resulting in terahertz (THz) frequency operation that can directly operate on optical signals.
MIT predicts that the new material stack will lead to memories that are 10-times denser than today and to electrical devices that can directly operate on optical signals.
“Our work opens up exciting new areas for transmitting and processing optical signals,” said post-doctoral researcher Dafei Jin in a press statement. Jin is working with professors Nicholas Fang and Jun Xu, along with doctoral candidates Anshuman Kumar Srivastava and former post-doc researcher Kin-Hung Fung (now at Hong Kong Polytechnic University).
For more detail: MIT Researchers Create Terahertz Graphene Chips
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Ibrar Ayyub
I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.
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